研究者詳細 - 三澤　弘明

MISC - 三澤　弘明

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Special topic on emerging directions in plasmonics

Emiliano Cortés, Alexander O. Govorov, Hiroaki Misawa, Katherine A. Willets

Journal of Chemical Physics 153 ( 1 ) 2020年7月

記述言語：英語掲載種別：書評論文，書評，文献紹介等出版者・発行元：American Institute of Physics Inc.

Plasmonics enables a wealth of applications, including photocatalysis, photoelectrochemistry, photothermal heating, optoelectronic devices, and biological and chemical sensing, while encompassing a broad range of materials, including coinage metals, doped semiconductors, metamaterials, 2D materials, bioconjugates, and chiral assemblies. Applications in plasmonics benefit from the large local electromagnetic field enhancements generated by plasmon excitation, as well as the products of plasmon decay, including photons, hot charge carriers, and heat. This special topic highlights recent work in both theory and experiment that advance our fundamental understanding of plasmon excitation and decay mechanisms, showcase new applications enabled by plasmon excitation, and highlight emerging classes of materials that support plasmon excitation.

DOI： 10.1063/5.0017914

ワイドギャップ半導体であるSrTiO3やTiO2を用いた可視光による選択的アンモニア合成招待

押切友也, 三澤弘明

CERAMICS JAPAN 55 ( 4 ) 287 - 289 2020年4月

Strong Coupling between Localized and Propagating Surface Plasmon Modes Revealed in the Near Field from Spectral and Temporal Domains

SUN Quan, YANG Jinghuan, YANG Jinghuan, UENO Kosei, SHI Xu, OSHIKIRI Tomoya, MISAWA Hiroaki, MISAWA Hiroaki

応用物理学会春季学術講演会講演予稿集(CD-ROM) 66th ROMBUNNO.9p‐W331‐8 2019年2月

金属/誘電体/金属ナノ構造の近接場分光特性

上野貢生, YANG Jinghuan, YANG Jinghuan, 巽亮太, SUN Quan, 押切友也, 三澤弘明, 三澤弘明

応用物理学会春季学術講演会講演予稿集(CD-ROM) 66th ROMBUNNO.10p‐W621‐3 2019年2月

局在プラズモン‐ナノ共振器強結合場における蛍光分子の発光特性

大西梓, ZU Shuai, SHI Xu, SUN Quan, 押切友也, 上野貢生, 三澤弘明, 三澤弘明

応用物理学会春季学術講演会講演予稿集(CD-ROM) 66th ROMBUNNO.9a‐W621‐9 2019年2月

局在表面プラズモン共鳴を用いた人工光合成招待

押切友也, 上野貢生, 三澤弘明

触媒 60 ( 3 ) 140 - 145 2018年6月

Near-field Spectral Properties of Nano-engineered Metallic Nanoparticles 査読

Kosei Ueno, Quan Sun, Hiroaki Misawa

Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF) 2018年

群論を用いた金属ナノ構造体の光学特性の解明

上田慎二, 長谷川誠樹, 市川陽一, 上野貢生, 三澤弘明, 岡本裕巳, 井村考平

応用物理学会秋季学術講演会講演予稿集(CD-ROM) 79th 2018年

局在プラズモンの人工光合成への展開 (創刊36周年特集ナノフォトニクス研究の最新動向)

押切友也, 上野貢生, 三澤弘明

機能材料 37 ( 8 ) 40 - 49 2017年8月

局在表面プラズモンの基礎とその光化学反応への展開

押切友也, 上野貢生, 三澤弘明

色材協会誌 90 ( 12 ) 408 - 413 2017年

記述言語：日本語出版者・発行元：一般社団法人色材協会

<p>光化学反応を利用した機能性材料や光エネルギー変換系はわれわれの豊かな生活を支えるために必要不可欠なものとなっている。しかし，一般的な分子の吸収断面積は小さく，一つの光子を1,000万にも及ぶ分子と相互作用させることによって初めてその中の1分子が励起される。効率的な光反応を実現するためには，光と物質の相互作用を増大させ，入射した光をきわめて少ない物質量により完全に吸収する高効率な光励起プロセスを可能にする光反応場の設計・構築が必要となる。一方，金属ナノ微粒子が示す局在表面プラズモンは，可視～近赤外領域での入射光を時間的・空間的に閉じ込めることで有効に利用可能な光捕集アンテナとして研究されてきた。筆者らは，これまでに緻密に設計・作製した金属ナノ構造が示す局在表面プラズモンのさまざまな性質について研究を進めてきた。本稿では，局在表面プラズモンが形成する光反応場が可能にする特異な光化学反応，とくに可視光を用いた光－化学エネルギー変換反応の現状について解説する。</p>

DOI： 10.4011/shikizai.90.408

最先端表面分析手法 : 元素分析から電子状態解析まで (特集進化する最先端計測・解析技術とナノテクノロジープラットフォームによる施設共用)

大塚俊明, 松尾保孝, 坂入正敏, 鈴木啓太, 上野貢生, 孫泉, 三澤弘明, スバギョアグス, 末岡和久

金属 86 ( 12 ) 1103 - 1111 2016年12月

局在表面プラズモンを活用した人工光合成

押切友也, 上野貢生, 三澤弘明

光化学 = Photochemistry : 光化学協会会誌 47 ( 1 ) 2 - 8 2016年4月

可視光を用いた空中窒素固定によるアンモニア合成 (特集アンモニア合成の最新動向)

押切友也, 上野貢生, 三澤弘明

ファインケミカル : 調査・資料・報道・抄録 45 ( 3 ) 41 - 46 2016年3月

界面構造制御によるプラズモン太陽電池の構築と光電変換特性評価

澤柳博輝, 中村圭佑, 押切友也, 上野貢生, 三澤弘明

日本化学会春季年会講演予稿集(CD-ROM) 96th 2016年

テラヘルツ帯域に共鳴を有する光アンテナ構造の分光特性と分子計測への応用

上野貢生, 野澤翔, 三澤弘明

応用物理学会春季学術講演会講演予稿集(CD-ROM) 62nd 2015年

パルスレーザー堆積法による薄膜プラズモン太陽電池の光電変換特性

中村圭佑, 片瀬貴義, 押切友也, 上野貢生, 太田裕道, 三澤弘明

日本化学会講演予稿集 95th ( 2 ) 2015年

プラズモン誘起人工光合成の構築とPEEMによる緩和過程の追跡招待

上野貢生, 孫泉, 三澤弘明

表面科学 35 ( 12 ) 668 - 673 2014年12月

記述言語：日本語掲載種別：記事・総説・解説・論説等（学術雑誌）出版者・発行元：The Surface Science Society of Japan

We have successfully developed plasmon-induced water splitting system that operates under irradiation by visible light. Most important feature in this system is based on the use of both sides of the same strontium titanate (SrTiO₃) single-crystal substrate without an electric wire connecting the anode and the cathode. The water splitting was induced, even with a minimum chemical bias of 0.23 V due to plasmonic effects based on the efficient water oxidation. Furthermore, we succeeded in visualizing the local field distribution of the localized surface plasmon resonance (LSPR) on gold nanoparticles and elucidating the dynamics of the LSPR by a time-resolved photoemission electron microscopy.

DOI： 10.1380/jsssj.35.668

その他リンク： https://jlc.jst.go.jp/DN/JLC/20000670034?from=CiNii

Nicholas J. Turro (1938-2012)

V. Ramamurthy, Hiroaki Misawa, Ken Ghiggino, Noboru Kitamura

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 20 III - IV 2014年9月

局在表面プラズモンによる水の可視光分解—A New Development to the Water Splitting System Using Visible Localized Surface Plasmon—紐解かれる光合成反応メカニズム

上野貢生, 三澤弘明

光学 = Japanese journal of optics : publication of the Optical Society of Japan 43 ( 6 ) 375 - 277 2014年6月

局在表面プラズモンによる水の可視光分解招待

上野貢生, 三澤弘明

光学 43 ( 6 ) 275 - 277 2014年6月

可視光局在プラズモンの人工光合成への展開 (特集人工光合成研究と最新技術)

上野貢生, 三澤弘明

化學工業 65 ( 3 ) 189 - 193 2014年3月

可視光局在プラスモンの人工光合成への展開招待

上野貢生, 三澤弘明

化学工業 65 ( 3 ) 21 - 25 2014年3月

光励起制御を目指した金属ナノ構造の構築招待

三澤弘明

日本写真学会誌 76 ( 6 ) 444 - 452 2014年1月

Visualization of Plasmonic Coupled mode of Gold Curvilinear Nanorods and Straight Nanorods by Photoemission Electron Microscopy 査読

Yukie Yokota, Quan Sun, Kosei Ueno, Yasutaka Matuo, Hiroaki Misawa, Takuo Tanaka

JSAP-OSA Joint Symposia 2014 Abstracts 2014年

光アンテナ構造を用いた遠赤外光照射によるプラズモン放射圧の誘起

上野貢生, 上野貢生, 伊藤弘子, 中野和佳子, 野澤翔, SUN Quan, 三澤弘明

応用物理学会春季学術講演会講演予稿集(CD-ROM) 61st 2014年

相補的金属ナノ構造における近接場分光特性の究明:可視域におけるバビネの原理の検証

溝端秀聡, 上野貢生, 三澤弘明, 岡本裕巳, 岡本裕巳, 井村考平

応用物理学会秋季学術講演会講演予稿集(CD-ROM) 75th 2014年

レーザー直接描画と加熱による可視波長域にストップバンドを持つ3次元フォトニック結晶の作製

常盤塁也, SUN Quan, 上野貢生, 三澤弘明

光化学討論会要旨集(CD-ROM) 2014 2014年

原子層堆積法による酸化チタン薄膜を用いたプラズモン誘起光電変換

中村圭佑, 鎌田義臣, SHI Xu, 押切友也, 上野貢生, 三澤弘明

日本化学会講演予稿集 94th ( 2 ) 2014年

フェムト秒レーザー直接描画と加熱による可視波長域にフォトニックバンドギャップを持つ3次元フォトニック結晶の作製

常盤塁也, SUN Quan, 上野貢生, 三澤弘明

応用物理学会春季学術講演会講演予稿集(CD-ROM) 61st 2014年

光と物質を強く相互作用させる革新的光化学反応場の創出懐中電灯で分子にレーザー並みの光強度を感じさせる方法論招待

三澤弘明

化学と工業 66 ( 8 ) 639 - 641 2013年8月

全固体プラズモン太陽電池の創製と光電変換特性

上野貢生, 上野貢生, 小竹勇己, SHI Xu, 三澤弘明

応用物理学会春季学術講演会講演予稿集(CD-ROM) 60th 2013年

光電子顕微鏡を用いた積層型ナノギャップ金構造における光電場増強効果の検討

松塚祐貴, LECARME Olivier, SUN Quan, 押切友也, 上野貢生, 上野貢生, 三澤弘明

光化学討論会講演要旨集 2013 2013年

フェムト秒レーザー直接描画及び原子層堆積法による3次元金属フォトニック結晶の作製

常盤塁也, SUN Quan, 上野貢生, 上野貢生, 三澤弘明

応用物理学会春季学術講演会講演予稿集(CD-ROM) 60th 2013年

Ag,Coナノ構造を有するTiO₂薄膜の光電変換

渡部愛理, 小竹勇己, 近松彰, 近松彰, 廣瀬靖, 廣瀬靖, 廣瀬靖, 上野貢生, 長谷川哲也, 長谷川哲也, 長谷川哲也, 三澤弘明

応用物理学会春季学術講演会講演予稿集(CD-ROM) 60th 2013年

表面プラズモン増強輻射圧を用いたナノ粒子の光捕捉: 捕捉効率の金ナノギャップ構造および励起光源依存性

東海林竜也, 柴田路子, 喜多村昇, 高瀬舞, 村越敬, 西島喜明, 上野貢生, 三澤弘明, 水元義彦, 石原一, 坪井泰之, 坪井泰之

日本化学会講演予稿集 92nd ( 2 ) 258 2012年3月

日本縦断研究室巡り北海道大学電子科学研究所三澤研究室招待

三澤弘明

レーザ協会誌 37 ( 1 ) 44 - 47 2012年1月

プラズモニクスと光化学反応招待

三澤弘明

応用物理 80 ( 9 ) 766 - 771 2011年9月

Plasmonic Antenna Effects on Photochemical Reactions 招待

Shuyan Gao, Kosei Ueno, Hiroaki Misawa

ACCOUNTS OF CHEMICAL RESEARCH 44 ( 4 ) 251 - 260 2011年4月

記述言語：英語掲載種別：書評論文，書評，文献紹介等出版者・発行元：AMER CHEMICAL SOC

Efficient solar energy conversion has been vigorously pursued since the 1970s, but its large-scale implementation hinges on the availability of high-efficiency modules. For maximum efficiency, it is important to absorb most of the incoming radiation, which necessitates both efficient photoexcitation and minimal electron hole recombination. To date, researchers have primarily focused on the latter difficulty: finding a strategy to effectively separate photoinduced electrons and holes. Very few reports have been devoted to broadband sunlight absorption and photoexdtation. However, the currently available photovoltaic cells, such as amorphous silicon, and even single-crystal silicon and sensitized solar cells, cannot respond to the wide range of the solar spectrum. The photoelectric conversion characteristics of solar cells generally decrease in the infrared wavelength range. Thus, the fraction of the solar spectrum absorbed is relatively poor. In addition, the large mismatch between the diffraction limit of light and the absorption cross-section makes the probability of interactions between photons and cell materials quite low, which greatly limits photoexcitation efficiency. Therefore, there is a pressing need for research aimed at finding conditions that lead to highly efficient photoexdtation over a wide spectrum of sunlight, particularly in the visible to near-infrared wavelengths.
As characterized in the emerging field of plasmonics, metallic nanostructures are endowed with optical antenna effects. These plasmonic antenna effects provide a promising platform for artificially sidestepping the diffraction limit of light and strongly enhancing absorption cross-sections. Moreover, they can efficiently excite photochemical reactions between photons and molecules dose to an optical antenna through the local field enhancement. This technology has the potential to induce highly efficient photoexcitation between photons and molecules over a wide spectrum of sunlight, from visible to near-infrared wavelengths. In this Account, we describe our recent work in using metallic nanostructures to assist photochemical reactions for augmenting photoexcitation efficiency.
These studies investigate the optical antenna effects of coupled plasmonic gold nanoblocks, which were fabricated with electron-beam lithography and a lift-off technique to afford high resolution and nanometric accuracy. The two-photon photoluminescence of gold and the resulting nonlinear photopolymerization on gold nanoblocks substantiate the existence of enhanced optical field domains. Local two-photon photochemical reactions due to weak incoherent light sources were identified. The optical antenna effects support the unprecedented realization of (i) direct photocarrier injection from the gold nanorods into TiO(2) and ID) efficient and stable photocurrent generation in the absence of electron donors from visible (450 nm) to near-infrared (1300 nm) wavelengths.

DOI： 10.1021/ar100117w

ナノスロットフォトニック結晶ナノレーザによる超高感度バイオセンシング

北翔太, 大塚翔太, 羽中田祥司, 遠藤達郎, 西島喜明, 三澤弘明, 馬場俊彦

応用物理学関係連合講演会講演予稿集(CD-ROM) 58th ROMBUNNO.25P-KA-1 2011年3月

広がるプラズモニクス研究（巻頭言）招待

三澤弘明

光学 40 ( 2 ) 67 - 67 2011年2月

ナノギャッププラズモン光局在場の直接観察

田中嘉人, 石黒裕康, 藤原英樹, 上野貢生, 三澤弘明, 笹木敬司

Optics & Photonics Japan講演予稿集(CD-ROM) 2011 ROMBUNNO.P39 2011年

プラズモンによる微小開口からの透過光増強

井村考平, 井村考平, 上野貢生, 上野貢生, 三澤弘明, 岡本裕巳

分子科学討論会講演プログラム&要旨(Web) 5th ROMBUNNO.4B12 (WEB ONLY) 2011年

Strong photon-molecule coupling fields for chemical reactions

Kosei Ueno, Hiroaki Misawa

Photochemistry 39 228 - 255 2011年

記述言語：英語掲載種別：書評論文，書評，文献紹介等

The global problems relevant to the environment and energy are attracting attention, so that it is considered that the construction of efficient lightenergy conversion devices serves as an important subject of the scientific research. Thus far, the interaction between photons and molecules has not received much attention in photochemistry. However, the creation of a progressive methodology that allows an increase in the excitation probability is necessary because the photochemical reaction begins with light absorption process. Namely, to create a low-carbon-emitting society by utilizing light energy, it is necessary to introduce the concept of "effective utilization of photons" to photochemistry. In this chapter, the significance of the development of photochemical reaction fields, in which make it possible to increase the interaction between photons and molecules, is described. Metallic nanostructures showing localized surface plasmon resonance are a promising approach for the development of photochemical reaction fields. As an outstanding feature of our photochemical reaction fields, we have verified two-photon photopolymerization of negative photoresists on the closely spaced gold nanoparticles irradiated by a weak incoherent light source. We also demonstrated the efficient plasmonic photoelectric conversion by near-infrared light using electrodes, in which gold nanoblocks were elaborately arrayed on the surface of a titanium dioxide single-crystal. © The Royal Society of Chemistry 2011.

DOI： 10.1039/9781849732826-00228

ナノスロット構造フォトニック結晶ナノレーザを用いたバイオセンサ

北翔太, 大塚翔太, 羽中田祥司, 遠藤達郎, 西島喜明, 三澤弘明, 馬場俊彦

応用物理学会学術講演会講演予稿集(CD-ROM) 71st ROMBUNNO.15A-ZW-18 2010年8月

散乱型近接場顕微鏡による金属ナノ構造の光局在場解析(3)

石黒裕康, 田中嘉人, 藤原英樹, 藤原英樹, 横田幸恵, 上野貢生, 上野貢生, 三澤弘明, 笹木敬司

応用物理学会学術講演会講演予稿集(CD-ROM) 71st ROMBUNNO.17A-NJ-8 2010年8月

金属ナノ構造を用いた光局在場の創成と光化学反応への応用招待

上野貢生, 三澤弘明

触媒 52 ( 3 ) 166 - 171 2010年4月

散乱型近接場顕微鏡による金属ナノ構造の光局在解析(2)

田中嘉人, 石黒裕康, 藤原英樹, 藤原英樹, 横田幸恵, 上野貢生, 上野貢生, 三澤弘明, 笹木敬司

応用物理学関係連合講演会講演予稿集(CD-ROM) 57th ROMBUNNO.18A-P4-8 2010年3月

光と分子が強く結合するナノ空間の創成招待

上野貢生, 三澤弘明

化学 65 ( 4 ) 22 - 27 2010年3月

金ナノ粒子修飾半導体光電変換素子における局所的相互作用の近接場光学イメージングによる研究

原田洋介, 井村考平, 井村考平, 岡本裕巳, 西島喜明, 上野貢生, 三澤弘明, 長瀬和也, 大西大

分子科学討論会講演プログラム&要旨(Web) 4th ROMBUNNO.4P061 (WEB ONLY) 2010年

金ナノ粒子で修飾した半導体光電変換素子の近接場光電流イメージング

原田洋介, 井村考平, 岡本裕巳, 西島喜明, 上野貢生, 三澤弘明, 長瀬和也, 大西大

エクストリームフォトニクス研究第11回理研・分子研合同シンポジウム平成22年 161 - 162 2010年

3P1-18 マイクロ共振器・くさび構造中のレイリー波・ラム波の時間分解イメージング(ポスターセッション)

友田基信, 松枝真之介, Wright Oliver B, 松田理, 西島善明, 上野貢生, Saulius Juodkazis, 三澤弘明

超音波エレクトロニクスの基礎と応用に関するシンポジウム講演論文集 30 457 - 458 2009年11月

局在プラズモンを利用した非線形光化学招待

上野貢生, 三澤弘明

機能材料 29 6 - 13 2009年11月

Three-dimensional microfabrication of materials by femtosecond lasers for photonics applications

Saulius Juodkazis, Vygantas Mizeikis, Hiroaki Misawa

JOURNAL OF APPLIED PHYSICS 106 ( 5 ) 051101 2009年9月

記述言語：英語掲載種別：書評論文，書評，文献紹介等出版者・発行元：AMER INST PHYSICS

Femtosecond laser fabrication of three-dimensional structures for photonics applications is reviewed. Fabrication of photonic crystal structures by direct laser writing and holographic recording by multiple beam interference techniques are discussed. The physical mechanisms associated with structure formation and postfabrication are described. The advantages and limitations of various femtosecond laser microfabrication techniques for the preparation of photonic crystals and elements of microelectromechanical and micro-optofluidic systems are discussed.

DOI： 10.1063/1.3216462

Preface

Hiroaki Misawa, Donald A. Tryk, Hiroshi Masuhara

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY 207 ( 1 ) 1 - 3 2009年9月

フェムト秒レーザによる微細加工技術招待

三澤弘明

電子材料 48 ( 2 ) 80 - 87 2009年

金属ナノ構造による光局在場の創製と非線形光化学反応への応用招待

上野貢生, 三澤弘明

化学工業 60 ( 10 ) 737 - 742 2009年

プラズモン増強場の形成と光反応招待

上野貢生, 三澤弘明

光学 38 ( 9 ) 448 - 455 2009年

3P2b-6 円、楕円、放物線境界での表面音響波の反射や収束のイメージング(ポスターセッション)

友田基信, Wright Oliver B, 上野貢生, 西島喜明, Juodkazis Saulius, 三澤弘明

超音波エレクトロニクスの基礎と応用に関するシンポジウム講演論文集 29 377 - 378 2008年11月

2E2b 音響整流器構造における表面音響波伝播の実時間イメージング(一般英語口演 I)

Danworaphong Sorasak, Kelf Timothy A, 松田理, Wright Oliver B, 上野貢生, 西島喜明, Juodkazis Saulius, 三澤弘明

超音波エレクトロニクスの基礎と応用に関するシンポジウム講演論文集 29 179 - 180 2008年11月

円形金ナノプレートの近接場分光特性

井村考平, 岡本裕巳, 上野貢生, 三澤弘明

応用物理学会学術講演会講演予稿集 69th ( 3 ) 901 2008年9月

Statics and dynamics of radial nematic liquid-crystal droplets manipulated by laser tweezers

Etienne Brasselet, Naoki Murazawa, Saulius Juodkazis, Hiroaki Misawa

PHYSICAL REVIEW E 77 ( 4 ) 041704 2008年4月

記述言語：英語出版者・発行元：AMER PHYSICAL SOC

Laser manipulation of trapped radial 4(')-n-pentyl-4-cyanobiphenyl (5CB) nematic liquid-crystal droplets induced by molecular reordering is presented. We show experimentally that optical tweezers having linear, elliptical, or circular polarization can break the radial symmetry of the initial molecular organization inside a radial nematic droplet. Static distorted or twisted deformation modes and steady or unsteady nonlinear rotational dynamics are observed. Statics results are analyzed in terms of light-induced radial or left-right symmetry breaking effects associated with optical reorientation. The dynamical observations are compared with simulations from a slab analog model, for which orientational processes driven by optical nonlinearities can be accurately described. This study confirms that light-induced bulk reordering is an essential ingredient towards the understanding of the behavior of radial nematic liquid-crystal droplets in laser tweezers, as suggested by previous studies.

DOI： 10.1103/PhysRevE.77.041704

Three-dimensional micro- and nano-structuring of materials by tightly focused laser radiation

Saulius Juodkazis, Vygantas Mizeikis, Shigeki Matsuo, Kosei Ueno, Hiroaki Misawa

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 81 ( 4 ) 411 - 448 2008年4月

記述言語：英語掲載種別：書評論文，書評，文献紹介等出版者・発行元：CHEMICAL SOC JAPAN

Three-dimensional laser microfabrication blends microscopy, optical nonlinear phenomena, photomodification, laser trapping, and creates novel possibilities for fabrication of micro- and nano-structures in a wide range of materials. This work reviews various implementations of laser photo-structuring and micromanipulation applied to photo-modification of various materials: glasses, crystals, polymers, gels, and liquid crystals.

DOI： 10.1246/bcsj.81.411

金ナノ構造体の近接場単一粒子分光・イメージング

井村考平, 岡本裕巳, 上野貢生, 三澤弘明

応用物理学関係連合講演会講演予稿集 55th ( 3 ) 1082 2008年3月

半導体加工技術により作製した金属ナノ構造による新しいフォトニック材料招待

上野貢生, 三澤弘明

未来材料 8 ( 1 ) 14 - 21 2008年1月

光の時代における光化学招待

三澤弘明

光化学 39 ( 2 ) 65 - 65 2008年

間葉系幹細胞から軟骨細胞への分化度の細胞形態による非侵襲的モニタリング法開発

高木睦, 北林孝之, 小泉覚, 廣瀬遙香, 藤原政司, 上野貢生, 三澤弘明, 細川陽一郎, 増原宏, 脇谷滋之

再生医療 7 2008年

金ナノヴォイド構造の近接場顕微分光

岡本裕巳, 井村考平, キムスイル, キムスイル, 上野貢生, 三澤弘明

分子科学討論会講演プログラム&要旨(Web) 2nd ROMBUNNO.1B19 (WEB ONLY) 2008年

Three-dimensional recording inside dielectrics for photonic applications

Saulius Juodkazis, Vygantas Mizeikis, Toshiaki Kondo, Kenta Kannari, Kock Khuen Seet, Hiroaki Misawa

Proceedings of SPIE - The International Society for Optical Engineering 6883 2008年

記述言語：英語

Three-dimensional (3D) structuring of polymers by tightly focused femtosecond laser pulses and interference is demonstrated. Photo-structuring by the tightly focused sub-1 ps laser pulses realizes a direct laser writing inside dielectric materials without self-focusing. Photo-polymerization of 3D photonic crystal templates with photonic stop bands in IR-spoctral region has been achieved. Holographic photo-polymerization of photonic crystal templates with counter-propagating beams was numerically modeled. Three-dimensional structures with an axial period smaller than the lateral can be recorded using the counter-propagating beam alignment. Photopolymerization of large-area polymeric structures with a high surface-to-volume ratio is demonstrated.

DOI： 10.1117/12.762977

金ナノディスクの近接場顕微分光

井村考平, 岡本裕巳, 上野貢生, 三澤弘明

分子科学討論会講演プログラム&要旨(Web) 2nd ROMBUNNO.1B18 (WEB ONLY) 2008年

3Ba07 接着動物細胞の生死に対するレーザー照射条件の影響(生体医用工学・人工臓器,一般講演)

高木睦, 酒井純, 上野貢生, 三澤弘明, 細川陽一郎, 増原宏

日本生物工学会大会講演要旨集 20 87 - 87 2008年

レーザでウエハ切断招待

三澤弘明

レーザ加工学会誌 15 ( 2 ) 126 - 127 2008年

間葉系幹細胞から軟骨細胞への分化度の細胞形態による非侵襲的診断法開発

高木睦, 北林孝之, 小泉覚, 上野貢生, 三澤弘明, 細川陽一郎, 増原宏, 脇谷滋之, 藤原政司

日本生物工学会大会講演要旨集平成19年度 139 - 139 2007年8月

レーザートラッピングにより補足された液晶液滴の回転制御招待

村澤尚樹, 三澤弘明

高分子 56 ( 7 ) 510 - 510 2007年7月

北海道における光産業の可能性招待

三澤弘明

開発こうほう 525 24 - 25 2007年

間葉系幹細胞から軟骨細胞への分化の細胞形態による非侵襲的診断法開発

高木睦, 北林孝之, 小泉覚, 上野貢生, 三澤弘明, 細川陽一郎, 増原宏, 脇谷滋之, 藤原政司

化学工学会研究発表講演要旨集 2007 ( 0 ) 719 - 719 2007年

フェムト秒レーザによるサファイア基板の3次元加工招待

三澤弘明

レーザー加工学会誌 14 ( 1 ) 42 - 44 2007年

単結晶フォトニック結晶を利用した有機色素のレーザー発振

西島喜明, 上野貢生, 藤原英樹, 三澤弘明, 笹木敬司, 谷村敏博, 前田浩平, MIZEIKIS Vygantas, JUODKAZIS Saulius

粉体工学会夏期シンポジウム講演論文集 43rd 68 - 69 2007年

感光性を付与されていない透明固体材料の内部加工

松尾繁樹, 富田卓朗, 橋本修一, 岡田達也, ヨードカシスサウリウス, 三澤弘明

レーザー学会研究会報告 = Reports on the Topical meeting of the Laser Society of Japan 356 47 - 51 2006年12月

01pD07 グラフォエピタキシー的結晶化(コロイド結晶化を結晶成長学で斬る(2),コロイドシンポジウム,第36回結晶成長国内会議)

松尾繁樹, 三澤弘明

日本結晶成長学会誌 33 ( 4 ) 254 - 255 2006年11月

記述言語：日本語出版者・発行元：日本結晶成長学会

Colloid crystallization by a method similar to the graphoepitaxy is described. In this method, V-shaped pits and grooves with specific angles are used for the crystallization of colloid particles; such the pits and grooves can be fabricated by anisotropic etching of silicon substrates. This method has the advantages of ease of fabrication, and diameter-free. The experimental results on this method are presented.

DOI： 10.19009/jjacg.33.4_254

微粒子集積型フォトニック結晶およびその反転構造中における色素分子の発光特性の検討

西島喜明, 上野貢生, 藤原英樹, 笹木敬司, 三澤弘明, 谷村敏博, 前田浩平

応用物理学会学術講演会講演予稿集 67th ( 3 ) 953 2006年8月

フェムト秒レーザーを利用した単一接着細胞の遺伝子発現解析

北林孝之, 上野貢生, 三澤弘明, 細川陽一郎, 増原宏, 脇谷滋之, 藤原政司, 高木睦

日本生物工学会大会講演要旨集平成18年度 191 - 191 2006年8月

Erratum: Optical third harmonic generation during femtosecond pulse diffraction in a Bragg grating (Journal of Physics D: Applied Physics (2006) 39:50-53)

S. Juodkazis, E. Gaizauskas, V. Jarutis, J. Reif, S. Matsuo, H. Misawa

Journal of Physics D: Applied Physics 39 ( 14 ) 1 2006年7月

Femtosecond Laser Microfabrication of Photonic Crystals

Vygantas Mizeikis, Shigeki Matsuo, Saulius Juodkazis, Hiroaki Misawa

3D Laser Microfabrication: Principles and Applications 239 - 286 2006年6月

記述言語：英語出版者・発行元：Wiley-VCH Verlag GmbH & Co. KGaA

The evolution of modern photonic technologies depends on the possibilities of obtaining large-scale photonic crystals cheaply and efficiently. Photonic crystals [1, 2] are periodic dielectric structures which are expected to play an important role in optics and optoelectronics due to their unique capability of controlling the emission and propagation of light via photonic band gap (PBG) and stop-gap effects. A comprehensive summary of the properties of various classes of PBG materials and their potential capabilities can be found in the literature, for example, books [3-6]. According to common knowledge, the wavelengths at which PBGs or stop-gaps open are close to the period of the dielectric lattice. At the same time, the most desirable spectral region for opto-electronic devices, including those based on photonic crystals, is in the visible and near-infrared wavelength range. Given this requirement, fabrication of structures periodic in one, two or three dimensions, and comprising many lattice periods, is not a trivial task. © 2006 Wiley-VCH Verlag GmbH &amp
Co. KGaA.

DOI： 10.1002/352760846X.ch10

Introduction

Hiroaki Misawa, Saulius Juodkazis

3D Laser Microfabrication: Principles and Applications 1 - 4 2006年6月

3D Laser Microfabrication: Principles and Applications

Hiroaki Misawa, Saulius Juodkazis

3D Laser Microfabrication: Principles and Applications 1 - 388 2006年6月

記述言語：英語出版者・発行元：Wiley-VCH

A thorough introduction to 3D laser microfabrication technology, leading readers from the fundamentals and theory to its various potent applications, such as the generation of tiny objects or three-dimensional structures within the bulk of transparent materials. The book also presents new theoretical material on dielectric breakdown, allowing a better understanding of the differences between optical damage on surfaces and inside the bulk, as well as a look into the future. Chemists, physicists, materials scientists and engineers will find this a valuable source of interdisciplinary knowledge in the field of laser optics and nanotechnology. © 2006 Wiley-VCH Verlag GmbH &amp
Co. KGaA.

DOI： 10.1002/352760846X

3次元有機フォトニック結晶の新展開招待

三澤弘明

レーザー学会誌 34 ( 5 ) 341 - 345 2006年5月

パルスレーザによる透明材料の三次元加工ーバイオマテリアルなどのナノ加工も視野にー招待

三澤弘明

Semiconductor FPD World 5 82 - 85 2006年5月

北大発ベンチャー株式会社レーザーシステム招待

三澤弘明

「SEMI News」SEMI ジャパン 22 ( 4 ) 18 - 19 2006年

超高密度フォトン束による固体の光反応制御

三澤弘明

日本化学会アワードアカウンツ 2006年

レーザーによる光圧を利用した微少物質の回転およびナノ構造の構築

三澤弘明

真空 48 ( 9 ) 501 - 505 2005年

フェムト秒レーザー加工

三澤弘明

ナノテクノロジー技術動向調査、未踏科学技術協会 35 - 37 2005年

光—分子強結合場の創製とその光学特性の評価招待

三澤弘明, 上野貢生

光化学 36 ( 2 ) 128 - 134 2005年

北大発ベンチャー株式会社レーザーシステム招待

三澤弘明

レーザー研究 33 ( 10 ) 692 - 693 2005年

フェムト秒レーザーによる3次元微細周期構造の作製と光機能性発現招待

三澤弘明

表面技術 56 ( 12 ) 807 - 811 2005年

High-aspect ratio nanofabrication by femtosecond irradiation

Saulius Juodkazis, Toshiaki Kondo, Hiroaki Misawa

Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest 2005 1737 - 1738 2005年

Anisotropic etching of dielectrics exposed by high intensity femtosecond pulses

Saulius Juodkazis, Yuusuke Tabuchi, Takahiro Ebisui, Shigeki Matsuo, Hiroaki Misawa

Proceedings of SPIE - The International Society for Optical Engineering 5850 59 - 66 2005年

記述言語：英語

Post-processing of crystalline and glass materials after the exposure to femtosecond pulses was carried out by wet etching in water solutions of hydrofluoric acid. Crystalline sapphire and quartz showed high (larger than 100) anisotropy of etching, which allowed to develop high-aspect-ratio three-dimensional structures in the volume of those dielectrics. In silicate glasses the anisotropy of wet etching can be achieved by a proper selection of the overlap of adjacent pulses during recording, their energy, and focusing. Three-dimensional structures in silica glass (viosil with OH concentration below 1200 ppm) with a high aspect ratio of 100 were achieved. The mechanism of anisotropy in wet etching is discussed. Surface irradiation of sapphire at irradiance close to that of surface ablation recorded structural modifications resembling the ripples. Those structures were made observable only after wet etching. Period of the ripples can be explained by the recently presented theory (Y. Shimotsuma et al., Phys. Rev. Lett. 91 247405-1 (2003)). Sub-micrometer structuring of surface is demonstrated. Electron temperature at the moment of structure recording can be estimated from the period of ripples (for sapphire Te ≃ 11 keV was found).

DOI： 10.1117/12.633670

フェムト秒レーザープロセスによるフォトニック結晶の作製

三澤弘明

レーザ加工学会誌 12 ( 2 ) 8 - 11 2005年

多光束レーザー干渉法による微細周期構造物作製手法の開発(S55-2 レーザ加工(2),S55 レーザ加工)

近藤敏明, SauliusJuodkazis, VygantasMizeikis, 松尾繁樹, 三澤弘明

年次大会講演論文集 : JSME annual meeting 2004 ( 4 ) 349 - 350 2004年9月

記述言語：日本語出版者・発行元：社団法人日本機械学会

We report the method to fabricate micro-periodic structures using interference of femtosecond pulses (Wavelength 800nm; Pulse duration 150 femtosecond; Repetition Rate 1kHz). The method is based on pulse division using diffractive beam splitter and facilitates a spatio-temporal overlap of constituent pulslets. We demonstrate interference patterns formed by several pulslets and successful fabrication 1-, 2- and 3-dimensional micro periodic structures after a few minutes exposure of a commercial photosensitive resin (SU-8; Microlithography Chemical Corp.) with micrometer resolution.

DOI： 10.1299/jsmemecjo.2004.4.0_349

新製品・新技術紹介高分子微粒子を用いた3次元フォトニック結晶

三澤弘明, 松尾繁樹

レーザ加工学会誌 11 ( 1 ) 46 - 48 2004年4月

集光フェムト秒レーザーによる透明材料のナノ加工と次世代生体マイクロチップの開発

松尾繁樹, 三澤弘明

レーザー研究 32 ( 2 ) 105 - 109 2004年2月

フェムト秒パルスレーザーによって加工された爪の表面形状観測

高木速人, 田北啓洋, 山本裕紹, 早崎芳夫, 西田信夫, 三澤弘明

電子情報通信学会技術研究報告. LQE, レーザ・量子エレクトロニクス 103 ( 621 ) 49 - 52 2004年1月

記述言語：日本語出版者・発行元：一般社団法人電子情報通信学会

本報告では,爪に照射するフェムト秒パルスレーザーの集光位置やエネルギーを変化させた時の加工形状について述べる.加工形状の観測には,原子間力顕微鏡を用いる.レーザーの集光位置に応じて,穴,ドーナツ形状,突起の形状を観測した.突起は,爪内部での微小爆発により表面が押し上げられた結果である.また,照射エネルギーを変化に対し,急激な加工径の変化を観測した.この急激な加工形の変化は,ガラスの加工との比較から,円形開口による回折パターンに引き起こされた.

フェムト秒パルスレーザーによって加工された爪の表面形状観測

高木速人, 田北啓洋, 山本裕紹, 早崎芳夫, 西田信夫, 三澤弘明

電子情報通信学会技術研究報告. OFT, 光ファイバ応用技術 103 ( 615 ) 49 - 52 2004年1月

記述言語：日本語出版者・発行元：一般社団法人電子情報通信学会

本報告では,爪に照射するフェムト秒パルスレーザーの集光位置やエネルギーを変化させた時の加工形状について述べる.加工形状の観測には,原子間力顕微鏡を用いる.レーザーの集光位置に応じて,穴,ドーナツ形状,突起の形状を観測した.突起は,爪内部での微小爆発により表面が押し上げられた結果である.また,照射エネルギーを変化に対し,急激な加工径の変化を観測した.この急激な加工形の変化は,ガラスの加工との比較から,円形開口による回折パターンに引き起こされた.

第7回日米先端科学シンポジウム

三澤弘明

レーザ加工学会誌 11 ( 1 ) 7 - 11 2004年

フェムト秒パルスレーザー加工

三澤弘明

OPTRONICS 4 131 - 136 2004年

レーザー光による分子マニピュレ—ション

三澤弘明

レーザ加工学会誌 11 ( 1 ) 7 - 11 2004年

フェムト秒レーザを用いた微細加工 (小特集レーザ加工の最前線)

松尾繁樹, 三澤弘明

高温学会誌 30 ( 2 ) 77 - 81 2004年

光ナノプロセス技術

三澤弘明

光学 33 ( 11 ) 645 - 650 2004年

Highly integrated transparent microchannel chips for continuous-flow PCR

Kai Sun, Shigeki Matsuo, Hiroaki Misawa

2003 Nanotechnology Conference and Trade Show - Nanotech 2003 1 86 - 89 2003年12月

A transparent microchannel chip for continuous-flow polymerase chain reaction (PCR) was developed. The microchannel was fabricated on a cover glass substrate using standard photolithography and wet-etching techniques, and sealed by another cover glass substrate. A heat source consisting of two indium-tin-oxide (ITO) films was deposited on the etched substrate. An insulation layer of SiO 2 was then deposited on the ITO heaters. Thin, patterned ITO films deposited on the insulation layer served as temperature sensors. Linear relationship between the thin ITO film sheet resistivity and the temperature was confirmed and calibrated. An amplication of a 97-bp segment of rat tongue cDNA was successfully performed with the chip.

高分子微粒子を用いた3次元フォトニック結晶

三澤弘明, 松尾繁樹

高分子 52 ( 10 ) 754 - 757 2003年10月

記述言語：日本語出版者・発行元：高分子学会

フォトニック結晶は,光集積回路や超低しきい値レーザーに応用することが可能であり,現在,さまざまな分野で活発な研究が進められている。筆者らは,シリコン基板上に作製したテンプレート中で高分子微粒子をfcc構造に配列させて3次元フォトニック結晶を作製することに成功した。本稿ではその作製法とその将来展望について述べる。

DOI： 10.1295/kobunshi.52.754

SC-1-6 高分子材料を用いた 3 次元フォトニック結晶の作製

三澤弘明, 松尾繁樹, JuodkazisSaulius, MizeikisVygantas, 福田晃一, 近藤敏彰, 藤根貴富

電子情報通信学会ソサイエティ大会講演論文集 2003 ( 1 ) "S - 11"-"S-12" 2003年9月

F14-(2) レーザ光による微小物体の捕捉と回転制御

村澤尚樹, 松尾繁樹, JuodkazisSaulius, 三澤弘明

年次大会講演資料集 3 ( 3 ) 193 - 194 2003年8月

F14-(3) レーザー光を用いたフォトニック結晶の作製

近藤敏彰, JuodkazisSaulius, MizeikisVygantas, 松尾繁樹, 三澤弘明

年次大会講演資料集 3 ( 3 ) 195 - 196 2003年8月

F14-(4) フェムト秒レーザパルスを用いた三次元ナノ加工

山崎和彦, JuodokazisSaulius, 戎井嵩裕, 田淵祐介, 松尾繁樹, 三澤弘明

年次大会講演資料集 3 ( 3 ) 197 - 198 2003年8月

F14-(5) 量子相関光子によるナノ加工技術の開発

松尾繁樹, JarutisVygandas, MizeikisVygantas, JuodkazisSaulius, 三澤弘明

年次大会講演資料集 3 ( 3 ) 199 - 200 2003年8月

2920 フェムト秒パルスレーザを用いた金属の微細孔加工

奥野紘規, 松尾繁樹, ヨードカシスサウリウス, 三澤弘明

年次大会講演論文集 : JSME annual meeting 2003 ( 4 ) 311 - 312 2003年8月

記述言語：日本語出版者・発行元：社団法人日本機械学会

It has been established that femtosecond pulse laser is a useful tool for direct microfablication of solid materials. We investigate micro-drilling of the small and deep holes into stainless steel plates with femtosecond laser pulses. We have adjusted beam diameter and focus length of lens, which determines the diameter of laser beam at the focus, and obtained holes with 180μm diameter by using an objective lens of 31mm focus length and 4mm beam diameter. But it isn't deep enough to utilize in many industrial applications. For making much deeper holes, we have demonstrated laser-scanning ab...

DOI： 10.1299/jsmemecjo.2003.4.0_311

金微粒子修飾プローブDNA単分子膜の表面プラズモン共鳴イメージング

林田雅行, 劉洪春, 山口央, 松尾繁樹, 三澤弘明

電子情報通信学会技術研究報告. MBE, MEとバイオサイバネティックス 103 ( 184 ) 5 - 8 2003年7月

記述言語：日本語出版者・発行元：社団法人電子情報通信学会

表面プラズモン共鳴(SPR)イメージング測定はDNAマイクロアレイにおけるハイブリダイゼーション検出手法として有望視されているが、DNAハイブリダイゼーションによるSPR応答は微小であり、検出感度、精度の向上のためにSPR信号の増幅が必要である。これまでに我々はプローブDNA末端に金微粒子を修飾することにより、空気中のSPR測定においてハイブリダイゼーション前後でSPR信号が増大されることを明らかとしてきた。今回、溶液中での金微粒子修飾DNA単分子膜によるハイブリダイゼーションの検出を行い、溶液中においてもSPR信号が増幅されることを確認した。

全透明マイクロPCRチップの作製と評価

孫凱, 崔平, 松尾繁樹, 木戸博, 三澤弘明

電子情報通信学会技術研究報告. MBE, MEとバイオサイバネティックス 103 ( 184 ) 1 - 4 2003年7月

記述言語：英語出版者・発行元：社団法人電子情報通信学会

透明材料を用いてヒーターとセンサー一体型のマイクロリアクターを作製し,定量ポリメラーゼチェインリアクション(PCR)を行った。光りソグラフィー技術,ウェットエッチング技術によりガラス基板にマイクロチャンネルを加工し,マイクロチャンネル基板上に形成したITOフィルムに電圧を印加することによりマイクロリアクターの温度コントロールを行った。顕微鏡とICCDのカメラシステムはSYBR^[○!R] Green Iを使用して、dsDNAの蓄積を検知するために使用されました。作製したマイクロリアクターを用いてマウスの舌cDNAからX遺伝子をテンプレートとしたPCRを行ったところ,塩基数97のPCR生成物を確認した。

透明材料のフォトニック結晶の作製とフォトニックデバイス (特集フォトニクスデバイス)

松尾繁樹, 三澤弘明

マテリアルインテグレ-ション 16 ( 6 ) 18 - 23 2003年6月

多光束レーザー干渉によるフォトニック結晶の作製 (特集フォトニック結晶)

松尾繁樹, 三澤弘明

O plus E 25 ( 2 ) 158 - 163 2003年2月

Effect of refractive index-mismatch on laser microfabrication in silica glass

A Marcinkevicius, Mizeikis, V, S Juodkazis, S Matsuo, H Misawa

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 76 ( 2 ) 257 - 260 2003年2月

記述言語：英語出版者・発行元：SPRINGER-VERLAG

We studied the peculiarities of femtosecond laser microfabrication in silica glass with a refractive index that did not exactly match the value for which the focusing optics is designed. Spherical aberrations resulting from a small refractive index mismatch were found to increase the size and distort the shape of photodamaged regions, thus reducing the spatial resolution of the microfabrication. However, these undesirable effects can be minimized, providing that the focusing depth inside the glass is not too large, and the laser intensity is kept close to the light-induced damage threshold.

DOI： 10.1007/s00339-002-1447-z

Independence of laser-induced damage threshold of glass on pulse duration for the femto-nanosecond region

O. Efimov, S. Juodkazis, S. Matsuo, H. Misawa

OSA Trends in Optics and Photonics Series 88 1201 - 1202 2003年1月

光圧による分子マニピュレ—ション

三澤弘明

応用物理 72 ( 6 ) 716 - 720 2003年

爆砕法により取り出した竹繊維の引張強度特性

高木均, 田倉隆輝, 一原洋平, 越智真治, 三沢弘明, 仁木龍祐

材料 52 ( 4 ) 353 - 356 2003年

Three-dimensional optical data storage in a nail for new data transportation

Akihiro Takita, Hirotsugu Yamamoto, Yoshio Hayasaki, Nobuo Nishida, Mitsuru Watanabe, Shigeki Matsuo, Hiroaki Misawa

Proceedings of SPIE - The International Society for Optical Engineering 4829 1104 - 1105 2003年

記述言語：英語

Optical data storage in nails using a femtosecond laser system is demonstrated. A bit is formed as a structural change of the nail by irradiation of a femtosecond laser pulse. The recorded bit is observed using a conventional microscope. The size of the bit increases with increasing irradiation pulse energy. The pulse energy necessary to form a bit depends on the recording depth and the surface condition of the nail.

DOI： 10.1117/12.531112

Three-dimensional Holographic Recording by Femtosecond Pulses

Saulius Juodkazis, Toshiaki Kondo, Slava Dubikovski, Vygantas Mizeikis, Shigeki Matsuo, Hiroaki Misawa

Proceedings of SPIE - The International Society for Optical Engineering 5147 226 - 235 2003年

記述言語：英語

We demonstrate fabrication of two-dimensional (2D) photonic crystal (PhC) structure inside the volume of SU-8 resist film by four beams interference. This structure, actually, is a 3D structure fabricated inside the film without sample scanning or laser beam steering. The mechanism of recording iii transparent dielectrics is discussed in terms of third harmonic generation, white light continuum, and thermal omission by "hot" electrons.

DOI： 10.1117/12.537663

Three-dimensional recording by femtosecond pulses in polymer materials

Toshiaki Kondo, Shigeki Matsuo, Saulius Juodkazis, Vygantas Mizeikis, Hiroaki Misawa

Journal of Photopolymer Science and Technology 16 ( 3 ) 427 - 432 2003年

記述言語：英語出版者・発行元：Tokai University

Fabrication and characteristics of two-dimensional (2D) and three-dimensional (3D) periodic structures, recorded inside the bulk of negative SU8 photoresist film by multiple-beam interference are reported. The recording was performed by ultrashort laser pulses of 150 fs duration with central wavelength of 800 nm, multiple beams were generated using a diffractive beam splitter. Intensity-dependent photomodification of the photoresist was initiated by multi-photon absorption. The development process removed the exposed regions of resist film, leaving free-standing 2D and 3D periodic dielectric structures. Detailed examination of the samples is presented, which reveals close resemblance between the features of the fabricated structures, and those of the light intensity distributions in the multiple-beam interference fields. The microfabrication method used is demonstrated to be suitable for obtaining of photonic crystal templates. Phase control of the constituent beams allowed to monitor and control the light interference pattern to be recorded. Possibility to record the diamond lattice using this method is examined and discussed.

DOI： 10.2494/photopolymer.16.427

フェムト秒レーザーによる三次元超加工

三澤弘明

機能材料 23 ( 2 ) 44 - 51 2003年

レーザマニピュレーション(<特集>微小物体のマニピュレーション技術)

三澤弘明, 松尾繁樹

精密工学会誌 68 ( 11 ) 1393 - 1397 2002年11月

Fabrication and optical characteristics of silicon-based two-dimensional photonic crystals with honeycomb lattice

JY Ye, Mizeikis, V, Y Xu, S Matsuo, H Misawa

OPTICS COMMUNICATIONS 211 ( 1-6 ) 205 - 213 2002年10月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE BV

We report on the fabrication and properties of quasi-two-dimensional photonic crystals (Phcs) with honeycomb lattices of dielectric rods in air. Photonic crystals, fabricated in silicon by electron beam lithography and dry-etching techniques, had the high aspect ratio of 12, corresponding to a rod height of about 7 mum. The optical transmission spectra of the samples measured in the 1.8-8 mum wavelength range, revealed pronounced features of photonic band dispersion, and a signature of a complete photonic band gap (PBG) centered at 2.3 mum wavelength. (C) 2002 Elsevier Science B.V. All rights reserved.

DOI： 10.1016/S0030-4018(02)01922-3

Rapid fabrication of electrochemical enzyme sensor chip using polydimethylsiloxane microfluidic channel

A Yamaguchi, P Jin, H Tsuchiyama, T Masuda, K Sun, S Matsuo, H Misawa

ANALYTICA CHIMICA ACTA 468 ( 1 ) 143 - 152 2002年9月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE BV

Applicability of polydimethylsiloxane (PDMS) for easy and rapid fabrication of enzyme sensor chips, based on electrochemical detection, is examined. The sensor chip consists of PDMS substrate with a microfluidic channel fabricated in it, and a glass substrate with enzyme-modified microelectrodes. The two substrates are clamped together between plastic plates. The sensor chip has shown no leakage around the microelectrodes under continuous solution flow (34 mul/min). Amperometric response of the sensor chips developed in this work suggest that various types of enzyme sensors can be designed by using PDMS microfluidic channels. (C) 2002 Elsevier Science B.V. All rights reserved.

DOI： 10.1016/S0003-2670(02)00634-7

Rapid fabrication of electrochemical enzyme sensor chip using polydimethylsiloxane microfluidic channel

A Yamaguchi, P Jin, H Tsuchiyama, T Masuda, K Sun, S Matsuo, H Misawa

ANALYTICA CHIMICA ACTA 468 ( 1 ) 143 - 152 2002年9月

記述言語：英語掲載種別：記事・総説・解説・論説等（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

Applicability of polydimethylsiloxane (PDMS) for easy and rapid fabrication of enzyme sensor chips, based on electrochemical detection, is examined. The sensor chip consists of PDMS substrate with a microfluidic channel fabricated in it, and a glass substrate with enzyme-modified microelectrodes. The two substrates are clamped together between plastic plates. The sensor chip has shown no leakage around the microelectrodes under continuous solution flow (34 mul/min). Amperometric response of the sensor chips developed in this work suggest that various types of enzyme sensors can be designed by using PDMS microfluidic channels. (C) 2002 Elsevier Science B.V. All rights reserved.

DOI： 10.1016/S0003-2670(02)00634-7

フォトニック結晶の作製技術 (特集フォトニック結晶)

松尾繁樹, 三澤弘明

光技術コンタクト 40 ( 8 ) 480 - 489 2002年8月

Direct measurement of laser power through a high numerical aperture oil immersion objective lens using a solid immersion lens

S Matsuo, H Misawa

REVIEW OF SCIENTIFIC INSTRUMENTS 73 ( 5 ) 2011 - 2015 2002年5月

記述言語：英語掲載種別：記事・総説・解説・論説等（学術雑誌）出版者・発行元：AMER INST PHYSICS

For many laser applications, information on irradiated laser power is important. However, direct measurement of laser power through a high numerical aperture objective lens is difficult in a laser microscope. In this article, we propose a method which use a solid immersion lens (SIL) for such measurements. A laser beam focused by an objective lens is introduced to the flat surface of a SIL, emitted through the spherical surface, and then detected. In this way the divergence of the laser beam is reduced, and as a result the detection efficiency of the laser power increases. From theoretical analysis, a Weierstrass-sphere type SIL was found to be an appropriate thickness for this propose. Transmittance of the SIL is evaluated for several refractive indeces. The validity of this method is confirmed experimentally. (C) 2002 American Institute of Physics.

DOI： 10.1063/1.1470231

Flexural rigidity of a single microtubule

T Takasone, S Juodkazis, Y Kawagishi, A Yamaguchi, S Matsuo, H Sakakibara, H Nakayama, H Misawa

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS 41 ( 5A ) 3015 - 3019 2002年5月

記述言語：英語出版者・発行元：INST PURE APPLIED PHYSICS

Microtubules, which are flexible biopolymers, can be used for nanotechnology applications (e.g., nano-actuator) as they have a rigidity similar to that of plexyglass and other plastic materials. The flexural rigidity, or bending stiffness, of microtubules was measured using a laser trapping technique and dark-field microscopy. One end of a microtubule rod was chemically bound to a glass microsphere, while the other end was bound to a silica glass substrate. Then, the microsphere was laser-trapped and manipulated to exert three different deformation modes on the microtubule. The values of flexural rigidity for these deformations were between 10(-25) and 10(-23) Nm(2) as measured for the 5-25 mum length microtubules. The origin of the length dependence of the flexural rigidity of microtubules is discussed.

DOI： 10.1143/JJAP.41.3015

化学的手法を用いたマイクロチャンネルチップ低温接合技術

山口央, 土山博史, 松尾繁樹, 横山順一, 三澤弘明

電気学会論文誌. E, センサ・マイクロマシン準部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A publication of Sensors and Micromachines Society 122 ( 3 ) 172 - 178 2002年3月

記述言語：日本語出版者・発行元：電気学会

Several bonding techniques for the development of microchannel chip at room temperature were studied. An electrostatic interaction between poly-ion layers with opposite charge and a condensation of silane coupling agent was employed to bond two glass substrates. In former case, the bonding of the substrates was achieved by applying high electrical potential. On the other hand, the condensation of silane coupling agent could bond the two glass substrates at room temperature and atmosphere. It was confirmed that the microchannel developed using the silane coupling agent could work for flow channel without solution leak. Poly(dimethylsiloxane)(PDMS) substrate was also applied for chip development. As a result, it was confirmed that PDMS was a material for easy and rapid fabrication of microchannel chip integrated with film electrodes

DOI： 10.1541/ieejsmas.122.172

Morphology-dependent resonant laser emission of dye-doped ellipsoidal microcavity

S Juodkazis, K Fujiwara, T Takahashi, S Matsuo, H Misawa

JOURNAL OF APPLIED PHYSICS 91 ( 3 ) 916 - 921 2002年2月

記述言語：英語出版者・発行元：AMER INST PHYSICS

We report a morphology-dependent resonance (MDR) laser emission of rhodamine-doped ellipsoidal microcavity of the poly(methylmethacrylate) particles. Elliptical particles showed different lasing properties: the lasing threshold, intramode spectral separation, mode intensity, and spectral position, when an excitation is pointed to the different locations on the particle. This differs from the well-understood MDR lasing in spherical microparticles. (C) 2002 American Institute of Physics.

DOI： 10.1063/1.1426240

Enhancement of surface plasmon resonance sensing for DNA hybridization using colloidal an attached probe DNA

A Yamaguchi, S Juodkazis, S Matsuo, H Misawa

CHEMISTRY LETTERS 190-191 ( 2 ) 190 - 191 2002年2月

記述言語：英語出版者・発行元：CHEMICAL SOC JAPAN

In this study, we demonstrate that the Au particle modified probe DNA monolayer can enhance the surface plasmon resonance (SPR) signal for measuring hybridization of unlabeled DNA molecules. The Au particles adsorbed on single stranded (ss)- and double stranded (ds)-DNA monolayers have different optical interaction with surface of Au thin film, and this difference induces the enhancement of the SPR signal.

DOI： 10.1246/cl.2002.190

Laser manipulation of bio-/biomimetic materials

Toru Takasone, Saulius Juodkazis, Shigeki Matsuo, Akira Yamaguchi, Keiji Sasaki, Jun-Ichi Hotta, Hiroaki Misawa

Proceedings of SPIE - The International Society for Optical Engineering 4830 212 - 217 2002年

記述言語：英語

We demonstrate a few examples of laser trapping and manipulation technique being applied for the measurements of small forces in the range of fN-pN and for laser microfabrication. We discuss prospective principles applicable for future nano/micro-mechanical tools. Elastic properties of microtubules of 24 nm in diameter were determined, a gold particle of 0.25 μm in diameter was laser trapped and manipulated. Paramagnetic microspheres were DNA-anchored to a glass substrate for measurement of elastic properties of DNA by evanescent light scattering. Also, a gold particle was attached to DNA and laser manipulated. The motion of the DNA molecule was controlled. The spring constant of the DNA was determined by using thermodynamical analysis of evanescent light scattering.

DOI： 10.1117/12.486512

Direct Measurement of Laser Power through a High Numerical Aperture Oil Immersion Objective Lens Using a Soild Immersion Lens（共著）

Rev.Sci.Instr. 73 ( 5 ) 2011 - 2015 2002年

A Heater-Integrated Transparent Microchannel Chip for Continuous-Flow PCR（共著）

Sesors & Actuators, B:Chem 4229 1 - 7 2002年

放射圧の科学的応用に関する研究からフェムト秒超加工、そして量子リソグラフィーへの展開

三澤弘明

O plus E 一枚の写真 1183 - 1184 2002年

Development of Microchannel Chip Using Chemical Bonding Techniques at Room Temperature （共著）

Trans. IEE of Japan 122-E 172 - 177 2002年

次世代遺伝子解析マイクロアレイの開発

三澤弘明

STEPねっとわーく 8 ( 2 ) 10 - 11 2002年

高密度フォトンと物質との相互作用招待

三澤弘明

花王ケミカルだより ( 51 ) 15 - 15 2002年

Stereolithography and 3D micro-structuring of transparent materials by femtosecond laser irradiation

Saulius Juodkazis, Makoto Horyama, Masafumi Miwa, Mitsuru Watanabe, Andrius Marcinkevičius, Vygantas Mizeikis, Shigeki Matsuo, Hiroaki Misawa

Proceedings of SPIE - The International Society for Optical Engineering 4644 27 - 38 2002年

記述言語：英語

We review applications of photopolymerization and photodamage by tightly focused picosecond and femtosecond pulses for the formation of three-dimensional structures. Laser microfabrication of various structures, like surface gratings, 3D optical memory, 2D and 3D photonic crystals, 3D micro-fluidic systems, etc. are described. Microfabrication by laser irradiation provides new opportunities to realize microstructures and microdevices, highly demanded in a number of fields, e.g., microchemistry, information storage, and photonics. The background of this technique is very simple, and relies on modification of materials by intense, strongly focused laser irradiation. In this highly spatially localized region, the material may become destroyed, solidified from liquid, or otherwise photo-modified, and complex structures can be formed from many photomodified regions. Below, we describe techniques, applications, and achievements of laser microstructuring in liquid resins and solid silica glasses.

DOI： 10.1117/12.464145

Dielectric Breakdown of Rubber Material by Femtosecond Irradiation （共著）

Appl.Phys. A 75 1 - 5 2002年

Three-dimensional optical storage inside biological tissue - Bit recording inside nails using infrared femtosecond laser pulses

Akihiro Takita, Hirotsugu Yamamoto, Yoshio Hayasaki, Nobuo Nishida, Mitsuru Watanabe, Shigeki Matsuo, Hiroaki Misawa

Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest 1 2001年12月

Femtosecond laser microfabrication of photonic crystal structures by glass damaging and resin photosolidification

V. Mizeikis, S. Juodkazis, A. Marcinkevicius, H. B. Sun, T. Kondo, S. Matsuo, H. Misawa

Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest 1 2001年12月

Microfabrication of photonic crystal (PhC) structures in silica glass and photopolymerizing resins using femtosecond lasers was presented. The structural and photonic characteristics of microfabricated photonic crystal structures were also investigated. The PhC structures fabricated in silica glass and resins showed high structural quality and revealed moderate photonic pseudogaps. It was observed that using materials with higher refractive index, full bandgaps can be achieved.

新しい情報携帯のためのフェムト秒レーザーを用いた爪への光記録

早崎芳夫, 田北啓洋, 渡辺満, 山本裕紹, 松尾繁樹, 三澤弘明, 西田信夫

電子情報通信学会技術研究報告. LQE, レーザ・量子エレクトロニクス 101 ( 452 ) 7 - 10 2001年11月

記述言語：日本語出版者・発行元：社団法人電子情報通信学会

高い安全性を有する新しい情報の携帯を実現するために, 爪内部へのビット情報の記録をフェムト秒レーザー加工技術を用いて実現する.ます, 照射エネルギーと記録されるビットのサイズの関係を示す.さらに, 記録の表面からの深さを深くすると, 表面の粗さの影響で, 記録に必要な照射エネルギーが増大することを示す.さらに, レーザー共焦点顕微鏡を用いたビット情報の再生結果を示す.

Photolithography based on organosilane self-assembled monolayer resist

Hiroyuki Sugimura, Takayuki Hanji, Osamu Takai, Takao Masuda, Hiroaki Misawa

Electrochimica Acta 47 ( 1 ) 103 - 107 2001年9月

記述言語：英語

Micropatterning of organosilane self-assembled monolayers (SAMs) was demonstrated on the basis of photolithography using an excimer lamp radiating vacuum ultraviolet light of 172 nm wavelength. This lithography is generally applicable to micropatterning of organic thin films including alkylsilane SAMs, since its patterning mechanism involves cleavage of C-C bonds in organic molecules and subsequent decomposition of the molecules. In this study, SAMs were prepared on Si substrates covered with native oxide by chemical vapor deposition in which an alkylsilane, that is, octadecyltrimethoxysilane [CH3(CH2)17Si(OCH3)3, ODS] was used as a precursor. SAM was photoirradiated through a photomask placed on its surface so that it was decomposed and removed in the photoirradiated area while the masked areas remained undecomposed. Accordingly, the photomask image was printed on the SAM as a removed/unremoved pattern. The patterned SAM could be used as a mask for plasma etching or area-selective Ni electroless plating. © 2001 Elsevier Science Ltd. All rights reserved.

DOI： 10.1016/S0013-4686(01)00554-0

Femtosecond laser interference technique with diffractive beam splitter for fabrication of three-dimensional photonic crystals

T Kondo, S Matsuo, S Juodkazis, H Misawa

APPLIED PHYSICS LETTERS 79 ( 6 ) 725 - 727 2001年8月

記述言語：英語出版者・発行元：AMER INST PHYSICS

A simple optical interference method to fabricate microperiodic structures was demonstrated. Femtosecond laser pulse was split by a diffractive beam splitter and overlapped with two lenses. Temporal overlap of the split femtosecond pulses, which requires 10 mum order accuracy in optical path lengths, was automatically achieved by this optical setup. One-, two-, and three-dimensional periodic microstructures with micrometer-order periods were fabricated using this method. (C) 2001 American Institute of Physics.

DOI： 10.1063/1.1391232

Fabrication and direct transmission measurement of high-aspect-ratio two-dimensional silicon-based photonic crystal chips

Y Xu, HB Sun, JY Ye, S Matsuo, H Misawa

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS 18 ( 8 ) 1084 - 1091 2001年8月

記述言語：英語出版者・発行元：OPTICAL SOC AMER

We report the fabrication and characterization of two-dimensional silicon-based photonic crystal (PhC) structures realized by a combination of electron-beam lithography and dry-etching techniques. PhCs of various lattices with very high aspect ratios up to 20 have been achieved, and PhC chips were prepared by standard semiconductor technologies, including thinning and cleaving. The chips consisting of high-aspect-ratio air rods or dielectric rods permit a direct transmission measurement, and they were observed to demonstrate pronounced photonic bandgap effects. Several photonic bandgap behaviors were identified by comparing transmission with reflection and experimental results with numerical results, and by considering detecting beam property. (C) 2001 Optical Society of America.

DOI： 10.1364/JOSAB.18.001084

Tailoring and characterization of photonic crystals

V. Mizeikis, S. Juodkazis, A. Marcinkevičius, S. Matsuo, H. Misawa

Journal of Photochemistry and Photobiology C: Photochemistry Reviews 2 ( 1 ) 35 - 69 2001年7月

記述言語：英語

Photonic crystals are promising systems for application in the fields of optoelectronics and optical communications. Understanding of their underlying physical principles and techniques for fabrication and characterization has progressed significantly during the last decade. This paper outlines the main achievements in these areas, and gives an overview of various photonic crystal systems, including those fabricated in semiconductors by traditional tools of microelectronics, and those fabricated from glasses, resins and other materials using novel non-traditional techniques. © 2001 Japanese Photochemistry Association.

DOI： 10.1016/S1389-5567(01)00009-0

金ナノ微粒子を用いたDNAハイブリダイゼーション検出における表面プラズモン共鳴信号の増幅

原洋一郎, 山口央, 松尾繁樹, 三澤弘明

電子情報通信学会技術研究報告. MBE, MEとバイオサイバネティックス 101 ( 182 ) 93 - 99 2001年7月

記述言語：日本語出版者・発行元：社団法人電子情報通信学会

表面プラズモン共鳴(SPR)分光法は金属薄膜表面に化学修飾した一本鎖プローブDNA分子に対する検体DNA分子のハイブリダイゼーションをin-situ(その場)観測するために適した手法である。しかし, DNA分子のハイブリダイゼーションによるSPR信号変化は小さく, SPR信号の増幅は検出感度・精度を向上させる上で必要不可欠である。本研究では, DNAハイブリダイゼーション検出に用いるための金薄膜基板作製条件について検討するとともに, SPR信号僧服を目的に金薄膜表面に固定化したプローブDNA末端に金ナノ微粒子を修飾した。その結果, 金ナノ微粒子修飾によりハイブリダイゼーションに伴うSPR信号の増幅が観測された。

PCRのための透明マイクロリアクターの開発

孫凱, 山口央, 石田豊, 大井文香, 松尾繁樹, 三澤弘明

電子情報通信学会技術研究報告. MBE, MEとバイオサイバネティックス 101 ( 182 ) 101 - 106 2001年7月

記述言語：英語出版者・発行元：社団法人電子情報通信学会

透明材料を用いてヒーター一体型のマイクロリアクターを作製し, ポリメラーゼチェインリアクション(PCR)を行った。光リソグラフィー技術, ウェットエッチング技術により石英基板にマイクロチャンネルを加工し, マイクロチャンネル基板上に形成したITOフィルムに電圧を印加することによりマイクロリアクターの温度コントロールを行った。ピレンスルホン酸(PS-Na)の蛍光スペクトルを計測することによりマイクロリアクター内の溶液温度をモニターしたところ, PCRのための温度サイクルをITOフィルムにより制御可能であることが明らかとなった。作製したマイクロリアクターを用いて大腸菌株のHB101をテンプレートとしたPCRを行ったところ, 塩基数450のPCR生成物を確認した。

PDMSマイクロチャンネル基板を用いたマイクロ酵素センサー

山口央, 土山博史, 金鵬, 松尾繁樹, 三澤弘明

電子情報通信学会技術研究報告. MBE, MEとバイオサイバネティックス 101 ( 182 ) 107 - 113 2001年7月

記述言語：日本語出版者・発行元：社団法人電子情報通信学会

シリコーンゴムの一種であるポリジメチルシロキサン(PDMS)は鋳型を用いて簡便にマイクロチャンネルを加工することが可能であり、ガラスやプラスチック基板などにより室温でマイクロチャンネルに蓋をすることが出来ることから、集積化マイクロチップを作製するための素材として注目を集めている。本研究はPDMSを用いて迅速かつ簡便にマイクロ酵素センサーを作成する方法の開発を目的とした。ガラス基板上に金フィルム電極を加工し、マイクロチャンネルを加工したPDMS基板と張り合わせたところ、チャンネルからの溶液リークは観測されず、安定的な電気化学応答が観測された。また、酵素を電極表面に修飾することにより酵素センサーとして動作することを確認した。

マイクロ微粒子高密度配置のためのレーザマニピュレーションインターフェースの開発

村上昭継, 田中芳夫, 木内陽介, 三澤弘明

電子情報通信学会技術研究報告. MBE, MEとバイオサイバネティックス 101 ( 181 ) 19 - 24 2001年7月

記述言語：日本語出版者・発行元：一般社団法人電子情報通信学会

非接触なマイクロ操作技術の一つとしてレーザマニピュレーションがある.通常, マイクロ環境下における操作は, 顕微鏡をのぞきながらの作業となり, 非常に熟練を要した.そこで, 非熟練者に対しても操作が容易な操作システムの開発が必要となる.本研究では, マイクロ操作に対し操作が容易であるとともに, 高度な操作技術の導入を考慮したレーザマニピュレーション制御システムの開発を行なう.システムにはパソコン上のマウスを用いたユーザインターフェースを適用するとともに, パソコン処理によるレーザ走査, 画像処理等により微粒子操作の高度化をはかる.最後に, 開発したインターフェースを用い, カバーガラス上に作成したマイクロ容器内へ微小微粒子の高密度配置を行なった例などを示す.

Microcavities in polymeric photonic crystals

HB Sun, Mizeikis, V, Y Xu, S Juodkazis, JY Ye, S Matsuo, H Misawa

APPLIED PHYSICS LETTERS 79 ( 1 ) 1 - 3 2001年7月

記述言語：英語出版者・発行元：AMER INST PHYSICS

We report the fabrication and characteristics of planar microcavities in a log-pile photonic crystal structure formed using light-induced photopolymerization of resin. A planar defect was introduced into the middle of the log-pile structure as a single layer with every second rod missing. The existence of confined cavity states was confirmed experimentally and by numeric simulations. The cavity resonance found at the midgap wavelength lambda (M)similar to4.0 mum had a quality factor of about 130. (C) 2001 American Institute of Physics.

DOI： 10.1063/1.1381035

Glucose sensing based on interdigitated array microelectrode

P Jin, A Yamaguchi, FA Oi, S Matsuo, JB Tan, H Misawa

ANALYTICAL SCIENCES 17 ( 7 ) 841 - 846 2001年7月

記述言語：英語出版者・発行元：JAPAN SOC ANALYTICAL CHEMISTRY

A micro glucose sensor consisting of an interdigitated array gold microelectrode was developed. The interdigitated array structure, which has 10 mum band width and 10 mum band gap, was fabricated in a small region (2.5 x 5 mm(2)) on a quartz substrate. Glucose oxidase was chemically fixed onto the electrode surface through self-assembled monolayer of 11-mercaptoundecanoic acid; ferroceneacetic acid was used as electron mediator. Electrochemical properties of the glucose oxidase-immobilized microelectrode were investigated by cyclic voltammogram measurements. Results confirmed that the reductive ferroceneacetic acid generated at counter electrode diffuses through a narrow band gap (10 mum) and can reach the working electrode surface.

DOI： 10.2116/analsci.17.841

Photo-electrochemical deposition of platinum on TiO2 with resolution of twenty nanometers using a mask elaborated with electron-beam lithography

S Juodkazis, A Yamaguchi, H Ishii, S Matsuo, H Takagi, H Misawa

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS 40 ( 6A ) 4246 - 4251 2001年6月

記述言語：英語出版者・発行元：INST PURE APPLIED PHYSICS

We report the patterning of Pt on a TiO2-rutile single crystal (the fundamental absorption band starts at 396 nm) by direct deposition from a water solution of H2PtCl6 (10-20 mmol/dm(3)) using laser beam writing at 390-396 nm, or by Hg-lamp illumination (i-line at 365 nm). Pt deposition was corroborated by microchemical analysis. A resolution of the Pt patterning down to 20-30 nm was achieved. To create a Pt pattern with resolution of twenty nanometers. we employed a mask elaborated with electron-beam (EB) drawing lithography. The mask was transparent to the writing illumination. The Pt was reduced from the solution by laser beam scanning over resist-covered regions, while the pattern was formed in the openings of the resist. Separation of the growth and illumination regions, typically, by 0.5-2 mum, facilitates the deposition of reproducible, high-aspect-ratio patterns. It is demonstrated that Pt was deposited through a process of diffusion of the light-excited carriers. The possibility of fabrication of a three-dimensional Pt pattern by the overgrowth of the resist is discussed.

DOI： 10.1143/JJAP.40.4246

有機物フォトニック結晶(<小特集>フォトニック結晶)

松尾繁樹, 三澤弘明

日本結晶成長学会誌 28 ( 1 ) 25 - 30 2001年3月

記述言語：日本語出版者・発行元：日本結晶成長学会

The mainstream of fabrication of photonic crystals is inorganic semiconductor techniques. Organic photonic crystals are not major, but possess unique and attracting futures. In this review, we introduce fabrication techniques of organic photonic crystals such as microsphere segmentation, laser microfabrication and laser interference fabrication. The advantage of microsphere segmentation is simple process to make micro periodicity, while that of laser microfabrication is high freedom of designing the photonic crystals. Characteristic applications of organic photonic crystals are also mention...

DOI： 10.19009/jjacg.28.1_25

Femtosecond laser-assisted three-dimensional microfabrication in silica

A Marcinkevicius, S Juodkazis, M Watanabe, M Miwa, S Matsuo, H Misawa, J Nishii

OPTICS LETTERS 26 ( 5 ) 277 - 279 2001年3月

記述言語：英語出版者・発行元：OPTICAL SOC AMER

We demonstrate direct three-dimensional (3-D) microfabrication inside a volume of silica glass. The whole fabrication process was carried out in two steps: (i) writing of the preprogrammed 3-D pattern inside silica glass by focused femtosecond (fs) laser pulses and (ii) etching of the written structure in a 5% aqueous solution of HF acid. This technique allows fabrication of 3-D channels as small as 10 mum in diameter inside the volume with any angle of interconnection and a high aspect ratio (10-mum-diameter channels in a 100-mum-thick silica slab). (C) 2001 Optical Society of America.

DOI： 10.1364/OL.26.000277

Arbitrary-lattice photonic crystals created by multiphoton microfabrication

HB Sun, Y Xu, S Juodkazis, K Sun, M Watanabe, S Matsuo, H Misawa, J Nishii

OPTICS LETTERS 26 ( 6 ) 325 - 327 2001年3月

記述言語：英語出版者・発行元：OPTICAL SOC AMER

We used voxels of an intensely modified refractive index generated by multiphoton absorption at the focus of femtosecond laser pulses in Ge-doped silica as photonic atoms to build photonic lattices. The voxels were spatially organized in the same way as atoms arrayed in actual crystals, and a Bragg-like diffraction from the photonic atoms was evidenced by a photonic bandgap (PBG) effect Postfabrication annealing was found to be essential for reducing random scattering and therefore enhancing PEG. This technique has an intrinsic capability of individually addressing single atoms. Therefore the introduction of defect structures was much facilitated, making the technique quite appealing for photonic research and applications. (C) 2001 Optical Society of America.

DOI： 10.1364/OL.26.000325

多光子吸収による3次元フォトニック結晶の作製

三澤弘明

表面科学 22 ( 11 ) 729 - 734 2001年

記述言語：日本語出版者・発行元：The Surface Science Society of Japan

Photomodification of transparent dielectric materials, induced by tightly focused laser beams, can be utilized for the fabrication of 3 D photonic crystal (PhC) structures. The photomodification occurs in the focal region of the beam due to multiphoton absorption. Nonlinearity of this process allows to reduce the size of the photomodified region even below the diffractive limit of the focusing optics. We utilize two types of photomodification for the PhC fabrication: (i) damage in silica glass that leaves empty voxels, and (ii) polymerization in liquid resins that leaves solid voxels. By damaging/solidifying the initial materials at precisely controlled periodic locations, we have recorded 3 D PhC structures. Using the (i) process we have recorded PhCs in silica with 3 D fcc lattice types, which exhibit clear signatures of photonic bandgaps in the near IR spectral region. With (ii) process we have recorded log-pile PhC structures, which exhibit photonic bandgaps and microcavity effects in the same spectral region.

DOI： 10.1380/jsssj.22.729

その他リンク： https://jlc.jst.go.jp/DN/JALC/00123565219?from=CiNii

超高感度マイクロ集積化分析システムの開発

三澤弘明

STEPねっとわ〜く 2 10 - 12 2001年

フェムト秒加工

三澤弘明

オプトニューズ 1 33 - 34 2001年

刺激応答ゲルを用いた焦点可変マイクロレンズ・アレイの製作

三澤弘明

電気学会論文誌E センサマイクロマシン準部門誌 121 ( 4 ) 158 - 162 2001年

多光子吸収による三次元マイクロファブリケーション

三澤弘明

化学工業 52 ( 4 ) 14 - 18 2001年

多光子吸収による光化学反応の空間制御

三澤弘明

化学と工業 54 ( 12 ) 1377 - 1379 2001年

フェムト秒超加工による3次元フォトニック結晶の作製

三澤弘明

レーザー加工学会誌 8 ( 3 ) 7 - 10 2001年

Submicrometer lithography by near-field optical microscopy

Saulius Juodkazis, Y. Arisawa, S. Matsuo, H. Misawa, R. Tomasiunas, J. Vaitkus

Proceedings of SPIE-The International Society for Optical Engineering 4318 42 - 47 2001年

記述言語：英語

Optimization of (i) intensity of illumination and (ii) thickness of resist was made looking for the conditions when high spatial resolution could be achieved by optical near-field lithography. Standard set-up of near-field illumination through a tapered Al-coated fiber tip was employed for the exposure of positive resist OFPR-5000(EG), which is photo-sensitive for wavelength λ &lt
450 nm. Tip was scanned along the line at near-field conditions of constant sample-to-tip separation to produce adjustable exposure dose of the spin-coated resist film. Femtosecond, 120 fs, pulses of the power P &lt
1 mW (at 82 MHz repetition rate) at 400 nm were coupled into a fiber (&lt
1 m length) and delivered to the surface of the resist for illumination.The issues of NSOM fabrication using tapered Al-coated tips are addressed. To achieve a reproducible and high aspect ratio (approaching 1: 1) NSOM-based lithography there should be found resists allowing to produce thin films (&lt
100 nm) with low surface roughness (&lt
10 nm).

DOI： 10.1117/12.417618

フェムト秒レーザー加工によるサファイアなど透明材料の機能化

三澤弘明

レーザー研究 30 ( 5 ) 239 - 243 2001年

記述言語：日本語出版者・発行元：The Laser Society of Japan

Functionalization of dielectric materials such as crystals, glasses (silica-related or polymers), and liquid polymerizable resins by femtosecond (100-500 fs) irradiation is summarized. The modification was carried out by employing tight focusing optics with numerical aperture typically NA > 0.6. This allows to produce 3D optical memory and photonic crystals (PhC) by implementing a principle of the focal spot scanning inside silica glass or polymerizable resin. PhCs can be also fabricated by encoding the 3D hologram in negative polymer photoresist. Optically modified regions of dielectric were found to respond sensitively to wet etching. The contrast in the etching rate is over 50, which makes it possible to fabricate 3D channels for microfluidics inside dielectrics.

DOI： 10.2184/lsj.30.239

その他リンク： https://jlc.jst.go.jp/DN/JALC/00156862163?from=CiNii

集光フェムト秒レーザーによる透明材料のナノ加工

三澤弘明

NEW GLASS 16 ( 3 ) 38 - 41 2001年

Laser micro-fabrication/manipulation of dielectric materials

Hiroaki Misawa, Saulius Juodkazis, Andrius Marcinkevi?ius, Vygantas Mizeikis, Akira Yamaguchi, Hongbo Sun, Shigeki Matsuo

Proceedings of the International Symposium on Micro Machine and Human Science 23 - 33 2000年12月

We describe microfabrication of various materials by multi-photon absorption (MPA) of femtosecond (120-150 fs) light pulses. The photo-modification at the focal point of tightly focused laser beam occurs inherently within volume smaller than that defined by the diffraction limit. The achievable lateral resolution is compared with that obtainable by lithography which uses near-field optical microscopy (NSOM). This technique can in principle lead to the realization of 3D optical memory and photonic crystals (PhC) with arbitrary lattice in polymers and silica glass, 3D prototyping in polymerizable resins, and etching of 3D structures guided by the optically damaged pattern in silica. Another topic also discussed in this work deals with laser micromanipulation using continuos wave (cw) laser operating at 1.06 μm. Light-controlled revolution of liquid crystal droplet and volume-phase transition of gel will be described.

Three-dimensional photonic crystal structures achieved with self-organization of colloidal particles

J. Song, H. Sun, Y. Xu, Y. Fu, S. Matsuo, H. Misawa, G. Du

Optical and Quantum Electronics 32 ( 12 ) 1295 - 1300 2000年12月

記述言語：英語出版者・発行元：Kluwer Academic Publishers

Three-dimensional polystyrene/air photonic crystal structure with different particle diameters: 200, 270 and 340 nm was achieved. Strong photonic band gap effect reflected with transmission minimum down to -16 dB was observed. The central wavelengths of the valleys of spectra were well fitted with theoretical calculation. The augmentation of band gap effect versus particle diameter was attributed to an improved self-assembling of particles. An analysis of transmission spectra is also presented. The agreement between the results of experiment and numerical analysis is good.

DOI： 10.1023/A:1026513628764

Crosstalk in photoluminescence readout of three-dimensional memory in vitreous silica by one- and two-photon excitation

M Watanabe, S Juodkazis, S Matsuo, J Nishii, H Misawa

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS 39 ( 12A ) 6763 - 6767 2000年12月

記述言語：英語出版者・発行元：INST PURE APPLIED PHYSICS

We report the readout of three-dimensional (3-D) memory of bits from their photoluminescence (PL). The bits were recorded inside vitreous silica by optical damage (micro-explosion), which was induced by 150 fs single pulse irradiation at the focal point. The bit can be written by 0.2-0.5 muJ energy pulses at 400 nm or 800 nm (the pulse energy was given at the irradiation point and had an intensity of about 10(15) W/cm(2) when a high numerical aperture of NA = 1.3 objective lens was used for recording). The readout was obtained by the PL of the 3-D pattern of damaged bits, which were excited by quasi-continuos (repetition rate of 82 MHz) fs-irradiation at much lower pulse intensity (by a factor of 10(6)) in order to exclude secondary damage. The readout was performed by the oil-immersion objective lens of NA = 1.3. The wavelength of PL excitation was 400 nm for one-photon and 800 nm for two-photon excitation of pi, with the single pulse energy of less than 1 pJ. We found that the crosstalk of pi, readout is the same as that for the transmission imaging and measures 4 mum in the inter-plane distance for the case of one-photon excitation and can be reduced to 3 mum when a reflection-type readout system is used together with two-phr,ton excitation (theoretical axial hit size for fabrication of a given optics was 1.4 mum). Two-photon readout of 3-D memory in silica is demonstrated for the first time.

DOI： 10.1143/JJAP.39.6763

445 Ni-Ti 形状記憶合金薄膜の力学的特性評価

久保豊和, 高木均, 岡野耕次, 三澤弘明, 松尾繁樹, 浅井真人

計算力学講演会講演論文集 2000 ( 13 ) 453 - 454 2000年11月

光応用 : レーザトラップ

三澤弘明

日本機械学会誌 103 ( 984 ) 749 - 751 2000年11月

Reversible phase transitions in polymer gels induced by radiation forces

S Juodkazis, N Mukai, R Wakaki, A Yamaguchi, S Matsuo, H Misawa

NATURE 408 ( 6809 ) 178 - 181 2000年11月

記述言語：英語出版者・発行元：MACMILLAN PUBLISHERS LTD

Many polymer gels undergo reversible, discontinuous volume changes in response to changes in the balance between repulsive intermolecular forces that act to expand the polymer network and attractive forces that act to shrink it. Repulsive forces are usually electrostatic or hydrophobic in nature, whereas attraction is mediated by hydrogen bonding or van der Waals interactions. The competition between these counteracting forces, and hence the gel volume(1-3), can thus be controlled by subtle changes in parameters such as pH (ref. 4), temperature(5), solvent composition(6) or gel composition(7). Here we describe a more direct influence on this balance of forces, by showing that the radiation force generated by a focused laser beam induces reversible shrinkage in polymer gels. Control experiments confirm that the laser-induced volume phase transitions are due to radiation forces, rather than local heating, modifying the weak interactions in the gels, in agreement with previous observations of light-induced chain association in polymer solutions(8,9). We rnd that, owing to shear-relaxation processes(10), gel shrinkage occurs up to several tens of micrometres away from the irradiation spot, raising the prospect that the combination of stimuli-responsive polymer gels and laser light might lead to new gel-based systems for applications such as actuating or sensing.

DOI： 10.1038/35041522

光重合による3次元フォトニック結晶の構築

三澤弘明

光化学 = Photochemistry 31 ( 2 ) 139 - 141 2000年8月

Picosecond time-resolved fluorescence spectroscopy of (Z)-1-(2-anthryl)-2-phenylethene and its model compounds: Understanding the photochemistry by distinguishing between the s-cis and s-trans rotamers

T Karatsu, H Itoh, A Nishigaki, K Fukui, A Kitamura, S Matsuo, H Misawa

JOURNAL OF PHYSICAL CHEMISTRY A 104 ( 30 ) 6993 - 7001 2000年8月

記述言語：英語出版者・発行元：AMER CHEMICAL SOC

The photochemical reactions (Z-E isomerization and photocyclization) of the s-cis and s-trans rotamers of (Z)-1-[2-(1-methryl)-2-phenylethene (Z2APE) were investigated. The absorption, steady-state and picosecond time-resolved fluorescences, and transient absorption spectra were measured in order to achieve a better understanding of the rotamer photochemistry. The spectra were compared with those of the model compounds ((Z)-1-[2-(1 -methylanthryl)]-2-phenylethene: Z1Me2APE and (Z)-1 -[2-(3-methylanthryl)]-2-phenylethene: Z3Me2APE). It is confirmed that the s-trans rotamer undergoes only Z-E adiabatic isomerization and that the s-cis rotamer mainly photocyclizes to give the dihydrophenanthrene-type intermediate with a much faster rate constant (k(cyc) = 2.3 x 10(10) s(-1).) The reason Z2APE does not give an aromatized pholocyclization product (1,2-naphtho[a]anthracene, NA) is that the return of the dihydrophenanthrene-type intermediate to the Z isomer is much faster than the oxidation to produce NA.

DOI： 10.1021/jp993305c

Real three-dimensional microstructures fabricated by photopolymerization of resins through two-photon absorption

HB Sun, T Kawakami, Y Xu, JY Ye, S Matuso, H Misawa, M Miwa, R Kaneko

OPTICS LETTERS 25 ( 15 ) 1110 - 1112 2000年8月

記述言語：英語出版者・発行元：OPTICAL SOC AMER

Effective energy windows for two-photon absorption (TPA) photopolymerization of resins were investigated and, with a properly selected laser pulse energy, exquisite three-dimensional (3D) microstructures with submicrometer spatial resolution were achieved. The results show the inherent utility of TPA in the fabrication of real 3D patterns. In particular, we propose and utilize a resin pre-exposure technique by which freely movable components affixed to an axle are built, demonstrating a new application of TPA in laser microfabrication. (C) 2000 Optical Society of America OCIS codes: 220.3740, 220.4000, 230.4000, 160.4330, 190.4180, 160.5470.

DOI： 10.1364/OL.25.001110

Fabrication and characteristic responses of integrated microelectrodes in polymer channel chip

K Ueno, F Kitagawa, HB Kim, T Tokunaga, S Matsuo, H Misawa, N Kitamura

CHEMISTRY LETTERS ( 8 ) 858 - 859 2000年8月

記述言語：英語出版者・発行元：CHEMICAL SOC JAPAN

A polymer microchannel (width = 100 mu m and depth = 20 mu m) chip integrated with band Au electrodes (47 x 100 mu m) was fabricated on the basis of photolithography/etching and imprinting techniques, and its characteristic electrochemical responses have been demonstrated.

DOI： 10.1246/cl.2000.858

1301 マイクロ集積化血液分析センサーの開発

三澤弘明, 小松真也, 金鵬, 塩田将弘, 松尾繁樹, 大井文香, 上甲茂樹

年次大会講演論文集 : JSME annual meeting 2000 ( 1 ) 307 - 308 2000年7月

記述言語：日本語出版者・発行元：社団法人日本機械学会

We fabricated the gold micro-electrode using the micromachining technology. Glucose oxidase (GOD) was immobilized on the gold micro-electrode by the thiol derivative. We succeeded in the development of the micro sensor which electrochemically detects the glucose using this GOD immobilized gold microelectrode. It was possible to detect 1-30mM glucose using this micro glucose sensor.

DOI： 10.1299/jsmemecjo.2000.1.0_307

911 Ni-Ti 形状記憶合金薄膜の回復挙動

岡野耕次, 高木均, 八木哲也, 三澤弘明, 松尾繁樹, 浅井真人

年次大会講演論文集 : JSME annual meeting 2000 ( 3 ) 343 - 344 2000年7月

記述言語：日本語出版者・発行元：社団法人日本機械学会

In recent years, electronic devices are miniaturized, and we wish to develop microactuator. Ni-Ti shape memory alloy is a material adapted to micro actuator as it can keep high power/weight ratio if it's miniaturized. So, a lot of studies have researched on this field. But, the research on the performance of thin films for actuator specifically did not reported frequently. Therefore, in our study, we researched recovery behavior of Ni-Ti shape memory alloy thin films; it is important for its practical application into microactuator to research on recovery force and response behavior.

DOI： 10.1299/jsmemecjo.2000.3.0_343

Photonic gaps in reduced-order colloidal particulate assemblies

HB Sun, Y Xu, JY Ye, S Matsuo, H Misawa, JF Song, GT Du, SY Liu

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS 39 ( 6B ) L591 - L594 2000年6月

記述言語：英語出版者・発行元：JAPAN J APPLIED PHYSICS

Colloidal assemblies consisting of monotonic polystyrene microspheres with a controlled degree of ordering were fabricated, and exhibited rich spectral behaviors. Smooth and spike-modulated broad attenuation regions in transmission spectra were observed in highly disordered and partly disordered samples, respectively, in contrast to the narrow peaks observed in well-ordered photonic crystals. These properties are interpreted consistently by analyzing the variation of the volume of closely packed units.

DOI： 10.1143/jjap.39.L591

Growth and property characterizations of photonic crystal structures consisting of colloidal microparticles

HB Sun, JF Song, Y Xu, S Matsuo, H Misawa, GT Du, SY Liu

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS 17 ( 3 ) 476 - 480 2000年3月

記述言語：英語出版者・発行元：OPTICAL SOC AMER

High-quality three-dimensional polystyrene-air photonic crystal structures with particle diameters of 200, 270, and 340 nm were grown with a quasi-equilibrium evaporation technique. The effects of the removal of interval water were evident as a blueshift of peaks, enhancement of the transmission attenuation, and changes in the gap/midgap ratio. Frequency scaling and incidence-angle-dependent transmission were also investigated; both show good agreement with the numerical simulation. (C) 2000 Optical Society of America [S0740-3224(00)01103-6] OCIS codes: 290.5850, 310.2790, 310.6860, 160.4670, 160.4760, 160.4890.

DOI： 10.1364/JOSAB.17.000476

217 薄膜形状記憶合金の疲労特性(機械材料・材料加工VI)

岡野耕次, 八木哲也, 高木均, 三澤弘明, 松尾繁樹, 浅井真人

講演論文集 5 ( 1 ) 73 - 74 2000年2月

Recording by microexplosion and two-photon reading of three-dimensional optical memory in polymethylmethacrylate films

K Yamasaki, S Juodkazis, M Watanabe, HB Sun, S Matsuo, H Misawa

APPLIED PHYSICS LETTERS 76 ( 8 ) 1000 - 1002 2000年2月

記述言語：英語出版者・発行元：AMER INST PHYSICS

We report the recording of a three-dimensional (3D) pattern in bulk polymethyl metacrylate (PMMA) films by microexplosion induced by a tightly focused (numerical aperture of oil-immersion objective was 1.3) single laser shot. Recording was done by picosecond (ps) single-pulse irradiation at 532 nm and by femtosecond at a 400 nm wavelength. The light-induced damage threshold of PMMA was found at similar to 4 MW/cm(2) for ps damaging. Readout of the 3D pattern was carried out by the recording of the transmission and the photoluminescence (PL) of bits. We demonstrate the possibility exciting PL of the optically damaged area inside the PMMA by one- and two-photon absorption. (C) 2000 American Institute of Physics. [S0003-6951(00)03208-3].

DOI： 10.1063/1.125919

Optically induced defects in vitreous silica

S Juodkazis, M Watanabe, HB Sun, S Matsuo, J Nishii, H Misawa

APPLIED SURFACE SCIENCE 154 696 - 700 2000年2月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE BV

We report the observation of photoluminescence (PL) in optically damaged vitreous silica (v-SiO2) and its gradual decrease by annealing at temperature range from room temperature to 773 K. Optical damage was induced by tightly focused picosecond or femtosecond irradiation inside v-SiO2. FL bands at 280, 470 and 650 nm were observed. The PL can be excited by 250 nm irradiation, which corresponds to the absorption band of the oxygen vacancy, V-O. The decrease of PL with annealing is explained by structural modifications of the defects in the damaged area. (C) 2000 Elsevier Science B.V. All rights reserved.

DOI： 10.1016/S0169-4332(99)00430-4

Annealing of GaN-InGaN multi quantum wells: Correlation between the bandgap and yellow photoluminescence

S Juodkazis, PG Eliseev, M Watanabe, HB Sun, S Matsuo, T Sugahara, S Sakai, H Misawa

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS 39 ( 2A ) 393 - 396 2000年2月

記述言語：英語出版者・発行元：JAPAN SOC APPLIED PHYSICS

We report experimental data on photoluminescence (PL) annealing of metalorganic chemical vapor deposition (MOCVD) grown GaN-InGaN multi quantum wells (MQWs). The formation of phase separation in the InGaN quantum well layer was confirmed by PL mapping when the MQW was grown at 675 degrees C. Spatial distribution of the yellow (Y)-band PL correlated with the dislocation network in that the intensity of the PL was lowest at the grain boundaries. The activation energy of thermal quenching of the InGaN PL at 400 nm was found to be equal to that of the increase of Y-band PL at 550 nm. The origin of the Y-band is explained as a radiative donor-acceptor recombination.

DOI： 10.1143/JJAP.39.393

マイクロ三次元光造形

三澤弘明

レーザ熱加工研究会誌 7 ( 2 ) 26 - 30 2000年

Two-photon Readout of Three-dimensional Memory in Silica

Appl. Phys. Lett. 77 ( 1 ) 13 - 15 2000年

M. Watanabe, S. Juodkazis, H.-B. Sun, S. Matsuo and H. Misawa, "Two-photon Readout of Three-dimensional Memory in Silica",

Appl. Phys. Lett., 77 ( 1 ) 13 - 15 2000年

A New Arrangement Method of Metal Particles by Synchronous Scanning Laser Beams(共著)

T. SICE, ( 36 ) 459 - 461 2000年

Generation and Recombination of Defects Induced by Femtosecond IR Laser Irradiation in Vitreous Silica(共著)

J. Phys. Chem. B, ( 104 ) 3450 - 3455 2000年

Drag of a laser trapped micropariticle(共著)

Jpn. J. Appl. Phys., ( 39 ) 1930 - 1933 2000年

The Influence of Buffer Layer and Growth Temperature on the Quality of Undoped GaN Layer Grown Sapphire Substrate by Metal Organic Vepor Deposition(共著)

Appl. Phys. Lett., 76 ( 16 ) 2220 - 2222 2000年

Surface Morphology of GaN Layers

Lithuanian Journal of Physics ( 40 ) 113 - 117 2000年

Trapping of Microstructures by Laser Scanning Manipulation(共著)

T. IEE Japan, ( 120 ) 345 - 349 2000年

Formation of Al203 Based photonic Crystals

Lithuanian Journal of Physics ( 40 ) 155 - 159 2000年

Photoluminescence Imaging. The Issues of Vibration Noise in Near-Field Optical Microscopy

Lithuanian Journal of Physics ( 40 ) 237 - 241 2000年

光応用：レーザトラップ

三澤弘明

日本機械学会 103 ( 948 ) 90 - 92 2000年

Luminescence and defect formation by visible and near-infrared irradiation of vitreous silica

M Watanabe, S Juodkazis, HB Sun, S Matsuo, H Misawa

PHYSICAL REVIEW B 60 ( 14 ) 9959 - 9964 1999年10月

記述言語：英語出版者・発行元：AMER PHYSICAL SOC

We report the observation of photoluminescence (PL) originating from defects created by the visible and near-infrared irradiation of vitreous silica. Three PL bands at 283, 468, and 558 nm exhibited excitation spectra peaking at 250 nm, which corresponds to the oxygen vacancy defect V-o absorption. The observed PL bands can be attributed to the following transitions: the singlet-singlet transition of oxygen vacancy for 283 nm, and the radiative recombination of separated carriers on the vacancy-interstitial pairs (V-o ;O-i) and(V-o ;(O-2)(i)) for 468 and 558 nm, respectively. [S0163-1829(99)07337-3].

DOI： 10.1103/PhysRevB.60.9959

Photoelectrochemical submicrometer patterning of titanium dioxide by platinum

S Juodkazis, H Ishii, S Matsuo, H Misawa

JOURNAL OF ELECTROANALYTICAL CHEMISTRY 473 ( 1-2 ) 235 - 239 1999年9月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE SA

Submicrometer patterning of the TiO2-rutile single crystal surface by Pt was accomplished by means of photo-catalytic reduction of PtCl42- from aqueous solutions of H2PtCl6. The patterns of Pt were fabricated along focal point traces of a 380 nm wavelength excitation laser beam. Single particles of Pt as small as 100 nm can be grown by such techniques. (C) 1999 Elsevier Science S.A. All rights reserved.

DOI： 10.1016/S0022-0728(99)00026-1

Laser-induced damage threshold and surface processing of GaN at 400 nm wavelength

PG Eliseev, HB Sun, S Juodkazis, T Sugahara, S Sakai, H Misawa

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS 38 ( 7B ) L839 - L841 1999年7月

記述言語：英語出版者・発行元：JAPAN J APPLIED PHYSICS

The laser-induced damage of epitaxially grown GaN semiconductor material is investigated for the first time by illumination of the c-plane by sub-picosecond laser pulses at the wavelength of 400 nm. The surface damage was investigated by optical and atomic force microscopies. The threshold fluence for ablation damage is determined to be similar to 5.4 J/cm(2) for pulse width of 150 fs. An application is demonstrated for laser-beam processing by the formation of clean dips on the GaN surface to depths of 240 nm in a single shot.

DOI： 10.1143/JJAP.38.L839

Fast optical switching by a laser-manipulated microdroplet of liquid crystal

S Juodkazis, M Shikata, T Takahashi, S Matsuo, H Misawa

APPLIED PHYSICS LETTERS 74 ( 24 ) 3627 - 3629 1999年6月

記述言語：英語出版者・発行元：AMER INST PHYSICS

We demonstrate the feasibility of an all-optical liquid-crystal (LC) switch with submillisecond switching time. This switch is realized by optical manipulation of a three-dimensionally trapped microscopic nematic LC droplet using an "optical tweezers." Transmission of a polarizer/LC droplet/analyzer system can be modulated at frequencies as high as 10(3) Hz, a faster response than that of a nematic LC demonstrated so far. The response corresponds to a submillisecond switching time when the LC droplet is rotated by an angle of pi/4. The alignment of the LC droplet to the plane of the incident plane-polarized beam is also demonstrated. (c) 1999 American Institute of Physics. [S0003-6951(99)00124-2].

DOI： 10.1063/1.123203

Photophysics and photochemistry of a laser manipulated microparticle

H Misawa, S Juodkazis

PROGRESS IN POLYMER SCIENCE 24 ( 5 ) 665 - 697 1999年6月

記述言語：英語掲載種別：書評論文，書評，文献紹介等出版者・発行元：PERGAMON-ELSEVIER SCIENCE LTD

In this article we survey experimental results obtained by the employment of the technique called "scanning laser micromanipultion". Novel physical and chemical properties of material of micro- and sub-micrometer dimensions are elucidated by conducting experiments on an individual laser-tweezed particle. It is shown that scanning laser micromanipulation can be adopted to the particles which have a refractive index that is higher than that of the surrounding material, as well as to those which possess lower refractive index or are reflective. An implementation of this method of laser manipulation can be applied for micro-machining, optical switching and electrochemistry, as demonstrated by a series of examples. (C) 1999 Elsevier Science Ltd. All rights reserved.

DOI： 10.1016/S0079-6700(99)00009-X

Size dependence of rotation frequency of individual laser trapped liquid crystal droplets

S Juodkazis, M Shikata, T Takahashi, S Matsuo, H Misawa

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS 38 ( 5A ) L518 - L520 1999年5月

記述言語：英語出版者・発行元：JAPAN J APPLIED PHYSICS

We report the development of an all-optical liquid-crystal (LC) switch realized by laser manipulation of a three-dimensionally trapped micrometer-size nematic liquid-crystal droplet. Transmission of a polarizer/LC droplet/analyzer system can be modulated at a frequency as high as 10(3) Hz for micrometer sized LC droplets. An optical switching corresponds to the rotation of the LC droplet by an angle of pi/4. The dependence of rotation frequency on LC droplet size is explained in terms of the circularly polarized light scattering by the molecules of the LC droplet. This scattering is responsible for the transfer of angular momentum from the light to the LC droplet.

DOI： 10.1143/JJAP.38.L518

Three-dimensional microstructures created by laser microfabrication technology

M Horiyama, HB Sun, M Miwa, S Matsuo, H Misawa

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS 38 ( 2B ) L212 - L215 1999年2月

記述言語：英語掲載種別：速報，短報，研究ノート等（学術雑誌）出版者・発行元：JAPAN J APPLIED PHYSICS

Three-dimensional microstructures with aspect ratios larger than 20 and a solidified wall with a thickness down to 2.0 mu m have been fabricated by the one-photon absorption photopolymerization technique. Lateral and longitudinal spatial resolutions in a single-line scanning process of as high as 1.0 mu m and 0.3 mu m, respectively, are reproducible. An experimental system consisting of a common picosecond pulsed laser and an optical microscope makes laser microfabrication easy to realize, implying a broad application potential.

DOI： 10.1143/JJAP.38.L212

Three-dimensional photonic crystal structures achieved with two-photon-absorption photopolymerization of resin

HB Sun, S Matsuo, H Misawa

APPLIED PHYSICS LETTERS 74 ( 6 ) 786 - 788 1999年2月

記述言語：英語出版者・発行元：AMER INST PHYSICS

Three-dimensional photonic crystal structures were fabricated with laser microfabrication techniques through two-photon-absorption photopolymerization of resin. Significant band-gap effects in the infrared wavelength region were observed from "layer-by-layer'' structures. (C) 1999 American Institute of Physics. [S0003-6951(99)03506-8].

DOI： 10.1063/1.123367

Behavior of biradicals generated from a norrish type-I reaction of 2,2-diphenylcycloalkanones. Chain-length dependence and magnetic field effects

Suzuki, I, R Tanaka, A Yamaguchi, S Maki, H Misawa, K Tokumaru, R Nakagaki, H Sakuragi

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 72 ( 1 ) 103 - 113 1999年1月

記述言語：英語出版者・発行元：CHEMICAL SOC JAPAN

The reaction course of acyl-diphenylmethyl biradicals (alpha-oxo-omega, omega-diphenyl-alpha, omega-alkanediyl biradicals), O=C-up arrow-(CH2)(n-2)-(CPh2)-Ph-up arrow ((BR)-B-3-n), generated from the Norrish type-I reaction of 2,2-diphenylcycloalkanones (CK-n) with various ring sizes in methanol, is switched from intramolecular disproportionation (n = 6, 7), giving a diphenylalkenal, to acylphenyl recombination (n greater than or equal to 9), affording a cyclophane derivative. The behavior of (BR)-B-3-9 derived from CK-9 was studied in detail; the photolysis of CK-9 afforded an open-chain and a cyclic decarbonylation product together with an unsaturated aldehyde and a 4-methylene-2,5-cyclohexadienyl ketone (a pre-cyclophane). The photolysis of this ketone gave the same products that arose from the photolysis of CK-9, presenting the possibility that the decarbonylation products and a part of the aldehyde are formed as secondary products during irradiation.
The magnetic field dependence of the lifetimes of (BR)-B-3-n (n = 12 and 13) generated from CK-12 and 13, respectively, was measured in methanol by means of a pulsed-laser excitation technique. The rate constants for intersystem crossing showed a maximum at a relatively low field strength, which decreased with increasing the field strength to level off to an asymptotic value at > 1.5 kG. The results show that the role of hyperfine coupling in intersystem crossing is less important in these systems, presumably because of the presence of a carbonyl oxygen and the absence of a hydrogen atom at the radical center.

DOI： 10.1246/bcsj.72.103

Excitation energy transfer between dye molecules in lasing microparticles

T Takahashi, K Fujiwara, S Matsuo, H Misawa

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY 120 ( 2 ) 135 - 140 1999年1月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE SA

Energy transfer from excited state donor to ground state acceptor dyes in polymer microparticles with a diameter of 30-60 mu m was observed under lasing condition. The energy transfer efficiency was found to be higher with the increasing size of the particle. This result indicates that the excitation energy transfer efficiency can be controlled by the particle size without varying temperature and dye concentration. The dynamics of energy transfer was observed through picosecond time-resolved emission spectral measurements. (C) 1999 Elsevier Science S.A. All rights reserved.

DOI： 10.1016/S1010-6030(98)00422-5

Transmission and Photoluminescence Images of Three-Dimensional Memory in Vitreous SiLica(共著)

Applied Physics Letters 74 ( 6 ) 786 - 788 1999年

Photophysics and Photochemistry of a Laser Manipulated Microparticle(共著)

Progress in Polymer Science 24 ( 5 ) 665 - 697 1999年

多光子顕微鏡と光記録

三澤弘明

レーザー研究 27 ( 12 ) 817 - 822 1999年

3次元有機フォトニック結晶の新しい形成法

三澤弘明

O plus E 21 ( 12 ) 1549 - 1553 1999年

Microfabrication and Characteristics of Two-Dimensional Photonic Crystal Structures in Vitreous Silica(共著)

Opt. Rev. 6 112 - 114 1999年

顕微分光の新展開：多光子過程と近接場光学 II. 多光子吸収による三次元マイクロファブリケーション

三澤弘明

分光研究 48 ( 2 ) 74 - 81 1999年

自己積層高分子薄膜を用いたマイクロ血球分離システムの開発

大井文香, 青木秀憲, 太田聡, 上甲茂樹, 松尾繁樹, 三澤弘明

電子情報通信学会論文誌 3 99 ( 178 ) 67 - 73 1999年

多光子吸収による三次元マイクロファブリケーション

三澤弘明

SUT Bulletin 16 ( 8 ) 8 - 13 1999年

Spectral Shift in Lasing Wavelengths due to Optical Kerr Effect in a Dye-doped Microsphere of Organic Polymer(共著)

Toshimasa Takahashi, Shigeki Matsuo, Hiroaki Misawa, Takashi Karatsu, Akihide Kitamura, Kenji Kamada, Koji Ohta

Nonlinear Optics, 22 ( 22 ) 397 - 400 1999年

Laser oscillation phenomena in dye-doped microspheres of some organic polymers were investigated. In case of poly(cyclohexylmethylsilane) (PCHMSi) microspheres, a spectral shift in lasing wavelengths was observed with increasing pumping power. The shift was explained in terms of optical Kerr effect (OKE) which come from the lasing light. The effective electric field which induced the OKE was estimated; the value was larger than that of pumping laser light. This result indicates that the effective electric field of light was efficiently amplified inside the microspheres.

顕微鏡を用いた光造形法による微小立体構造物の作製

川上剛史, 松尾繁樹, 三澤弘明, 三輪昌史, 金子礼三

レーザー学会研究会報告 = Reports on the Topical meeting of the Laser Society of Japan 259 41 - 45 1998年12月

Three-dimensional optical data storage in vitreous silica

M Watanabe, HB Sun, S Juodkazis, T Takahashi, S Matsuo, Y Suzuki, J Nishii, H Misawa

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS 37 ( 12B ) L1527 - L1530 1998年12月

記述言語：英語出版者・発行元：JAPAN J APPLIED PHYSICS

To achieve high bit densities (>10 GB/cm(3)) in optical memory, we accomplished a three-dimensional optical data storage system using vitreous silica as the recording material. We succeeded in high-density optical recording by focusing pulsed laser beams of 532 nm (full width at half maximum [FWHM] 30 ps) and 400 nm (150 fs). A recording density of 72.9 GB/cm(3) was achieved, which corresponded to that of 100 compact disks, on a glass plate of (2 x 2) cm(2) and 2.2 mm thickness. We found that the optical damage of silica occurs within 400 ps after irradiation by a single pulse for 30 ps at 532 nm. Three photoluminescence bands were found in the photomodified silica at 283 nm, 468 nm and 558 nm. All the three bands showed similar photoluminescence excitation spectra, i.e. a peak related to oxygen vacancy absorption at 250 nm.

DOI： 10.1143/JJAP.37.L1527

Morphology dependent resonant lasing of a dye-doped microsphere prepared by non-linear optical material

T Takahashi, S Matsuo, H Misawa, T Karatsu, A Kitamura, K Kamada, K Ohta

THIN SOLID FILMS 331 ( 1-2 ) 298 - 302 1998年10月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE SA

Laser oscillation from dye-doped microparticles of organic polymers was investigated. Spectral shift in peak wavelengths of laser oscillation depending on pumping intensity was observed in the microparticles of poly(cyclohexylmethylsilane) (PCHMSi). The shift observed for PCHMSi microparticles was discussed in terms of the third-order non-linear optical (NLO) effect. It was concluded that the effective power density of light just inside the microparticle's surface was about 30 times larger than that of the pump pulse. (C) 1998 Elsevier Science S,A, All rights reserved.

DOI： 10.1016/S0040-6090(98)00934-1

光化学の新展開

朴鐘震, 入江正浩, 増原宏, 橋本和仁, 三澤弘明

光化学 = Photochemistry 28 ( 1 ) 2 - 16 1998年8月

Photoelectrochemical fabrication of submicrometer platinum pattern on titanium dioxide single crystal surface

H Ishii, S Juodkazis, S Matsuo, H Misawa

CHEMISTRY LETTERS ( 7 ) 655 - 656 1998年7月

記述言語：英語出版者・発行元：CHEMICAL SOC JAPAN

Submicrometer patterning of TiO2-rutile single crystal surface by Pt was accomplished by means of photocatalytic reduction of PtCl42- to Pt in an aqueous solution of H2PtCl6. The patterns of Pt were fabricated along focal point traces of 380 nm wavelength excitation laser beam on the surface of rutile substrates.

DOI： 10.1246/cl.1998.655

Self-organizing three-dimensional colloidal photonic crystal structure with augmented dielectric contrast

K Fukuda, H Sun, S Matsuo, H Misawa

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS 37 ( 5A ) L508 - L511 1998年5月

記述言語：英語出版者・発行元：JAPAN J APPLIED PHYSICS

We demonstrated that low-velocity quasi-equilibrium evaporation of water from an aqueous colloidal solution of polystyrene microparticles with 220 nm diameter enabled the preparation of a three-dimensional colloidal-air photonic crystal structure without significantly distorting the lattice, and the absorption peak of the structure was observed at around 500 nm. A much stronger photonic band gap effect is expected due to an approximately 30% increase of the dielectric contrast.

DOI： 10.1143/JJAP.37.L508

多光子吸収によるガラス光メモリー

三澤弘明

O plus E 20 ( 9 ) 1028 - 1032 1998年

多光子吸収励起過程を利用した三次元光記録

三澤弘明

光技術コンタクト 36 ( 3 ) 124 - 129 1998年

マイクロマシン技術とその応用

三澤弘明

STEP テクノ情報 3 ( 4 ) 2 - 6 1997年

レーザー光を利用した微粒子のマニピュレ—ション技術

三澤弘明, 三輪昌史

精密工学会誌 63 ( 7 ) 959 - 962 1997年

マルチフォトンプロセスを用いた三次元記録

三澤弘明

光化学 24 26 - 31 1997年

放射圧による高分子ゲルの相転移制御

三澤弘明

レーザー研究 24 ( 11 ) 1163 - 1168 1996年11月

石英ガラスを用いた三次元光記録

三澤弘明

化学と工業 = Chemistry and chemical industry 49 ( 2 ) 178 - 180 1996年2月

Infrared Laser-Induced Photo-Thermal Phase Transition of an Aqueous Poly (N-isopropylacryl-amide) Solution in the Micrometer Dimension (共著)

Bull. Chem. Soc. Jpn. 69 ( 59 ) 1996年

マイクロマシン材料のレーザー化学加工

三澤弘明

レーザー研究 24 ( 7 ) 750 - 756 1996年

記述言語：日本語出版者・発行元：The Laser Society of Japan

Laser manipulation-microfabrication system consisting of a CW laser, a picosecond pulsed laser and an optical microscope was developed to assemble micrometer-sized structure in solution. Photopolymerization of reactive monomers induced at the focal spot of picosecond laser pulses (λ = 355 nm or 532 nm, FWHM = 30 ps, repetation rate = 10 Hz) was employed for connection of glass particles regularly aligned by laser trapping. Since photopolymerization was induced in the vicinity of a focal spot, any desired numbers of glass particles with arbitrary geometrical structure can be connected by repeating the manipulation and the photopolymerization procedures.

DOI： 10.2184/lsj.24.750

その他リンク： https://jlc.jst.go.jp/DN/JALC/00041014981?from=CiNii

Light emitting diode-based nanosecond ultraviolet light source for fluorescence lifetime measurements

T Araki, H Misawa

REVIEW OF SCIENTIFIC INSTRUMENTS 66 ( 12 ) 5469 - 5472 1995年12月

記述言語：英語出版者・発行元：AMER INST PHYSICS

A compact pulsed-light source is devised from an InGaN/AlGaN double heterostructure light-emitting diode (LED). The LED emits a 450-nm (blue) light under conventional de operation below 30 mA. When a current larger than 50 mA is applied, the intensity of the 450-nm Light saturates, but that of the 380-nm light due to the InGaN component continues to increase. This phenomenon is utilized to realize a nanosecond ultraviolet (UV) light source. Under repetitive, large current pulsing (frequency=10 kHz, pulse width=4 ns, peak current=2 A), the peak LED emission shifts from 450 to 380 nm. Intense light pulses (peak value=40 mW) of 4-ns duration were generated. To evaluate the potential of the pulsed LED as an excitation source, the fluorescence lifetime of a quinine-sulfate solution was measured. The observed Lifetime characteristics agreed well with the generally accepted behavior. (C) 1995 American Institute of Physics.

DOI： 10.1063/1.1146519

Spectroscopic and kinetic studies on volume expansion processes of photoresponsive polyacrylamide microgels in water

M Ishikawa, H Misawa, N Kitamura, M Irie, H Masuhara

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 68 ( 12 ) 3397 - 3402 1995年12月

記述言語：英語出版者・発行元：CHEMICAL SOC JAPAN

Photostimulated volume expansion of polyacrylamide microgels (initial radius=11-235 mu m) bearing triphenylmethyl cyanide moieties (AAm-TPMCN) in water was studied on the basis of simultaneous measurements of the degree of ionic dissociation (alpha) of TPMCN to TPM(+) (triphenylmethyl cation) and the gel radius. The time profile of the radius change, r(t), was analyzed by a convolution relation between r(t) and the time course of alpha (alpha(t)). The characteristic time constants of the volume change, related to the cooperative diffusion coefficient of the gel network, were determined for AAm-TPMCN gels with various radii. The faster photoresponse time of the volume change for the smaller AAm-TPMCN gel was explained in terms of the diffusion theory of gel networks in water.

DOI： 10.1246/bcsj.68.3397

PHOTOCHROMISM OF 1-(2-NAPHTHOXY)ANTHRAQUINONE

M TAJIMA, H MISAWA, H INOUE

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY 89 ( 1 ) 53 - 59 1995年6月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE SA LAUSANNE

The photochromic behaviour of 1-(2-naphthoxy)anthraquinone (1) was investigated using electronic spectroscopy and kinetic analysis of the decay of coloured species. The decay of coloured species well obeyed first-order kinetics and consisted of two processes, reversion to the starting substance and the change toward final formation of 1-hydroxyanthraquinone (2). The reversion process was revealed to proceed through two different pathways having activation enthalpies of 30.5 and 104 kJ mol-1. The lower value suggests that the reversion proceeds from a rotational isomer of 1 while the higher value comes from a structural isomer of 1, 9-naphthoxy-1,10-anthraquinone. The activation enthalpy of the change toward final formation of 2 was 49.1 kJ mol(-1). The possible formation of the two different coloured species from the two conformers of 1 on light irradiation was discussed.

DOI： 10.1016/1010-6030(95)04037-G

Micrometer size effect upon the viscosity of individual droplets dispersed in the oil/water/dodecyl sulfate system: A transient absorption microspectroscopic study

Sejji Funakura, Kiyoharu Nakatani, Hiroaki Misawa, Noboru Kitamura, Hiroshi Masuhara

Journal of Physical Chemistry 99 ( 41 ) 15192 - 15197 1995年

記述言語：英語

Transient absorption microspectroscopy was developed for studies on photophysical and photochemical processes in a single laser-manipulated microdroplet in water. Transient absorption spectra and their decay curves of individual tri-n-butyl phosphate (TBP) microdroplets containing zinc tetraphenylporphyrin (ZnTPP) were measured and analyzed. Owing to the intense laser excitation, the concentration of the ZnTPP triplet state was so high that the decay profiles of Tn ← T1 absorbance of ZnTPP obeyed the second-order kinetics, triplet-triplet (T-T) annihilation. Simultaneously the delayed fluorescence of ZnTPP was observed and analyzed in terms of T-T annihilation. The estimated rate constant of T-T annihilation (kTT) was comparable to that obtained from Tn ← T1 absorption spectroscopy. Assuming the T-T annihilation is diffusion-controlled, the inner viscosity of a single TBP microdroplet was obtained and examined as a function of the diameter of the microdroplets. A remarkable micrometer size effect that the inner viscosity is decreased with the droplet diameter was found and discussed in terms of a swollen TBP droplet owing to the penetration of water. © 1995 American Chemical Society.

DOI： 10.1021/j100041a039

A Biological-sensor Utilizing a Living Cell for Environment Monitoring in Micro Space (共著)

Proceedings of the International Symposium on Microsystems, Intelligent Materials and Robots 301 1995年

Laser Manipulation Technique and Its Role in Study of Micromachine (共著)

Proceedings of the International Symposium on Microsystems, Intelligent Materials and Robots 67 1995年

光の「圧力」による微粒子操作法

三澤弘明

メカライフ 44 32 - 33 1995年

微粒子の光捕捉・操作とレーザー発振

三澤弘明

應用物理 63 ( 9 ) 898 - 905 1994年9月

Laser trapping and electrochemistry of a single oil droplet in water: Electron transfer across the oil-droplet | electrode interface

Kiyoharu Nakatani, Tatsuya Uchida, Hiroaki Misawa, Noboru Kitamura, Hiroshi Masuhara

Journal of Electroanalytical Chemistry 367 ( 1-2 ) 109 - 114 1994年3月

記述言語：英語

The electrochemistry of ferrocene (FeCp) in a single micrometer-sized nitrobenzene droplet dispersed in water was studied by laser trapping and microelectrochemical techniques. Mass transfer of FeCp, ferrocenium ion, and tetra-n-butylammonium ion between the droplet and water phases accompanied by oxidation of FeCp proceeded across the droplet | water interface. The peak potential of a cyclic voltammogram of FeCp was highly dependent on the potential sweep rate. The potential shift was analyzed by thin-layer electrolysis and the results are discussed in terms of the irreversible electron transfer of FeCp across the droplet | electrode interface and in terms of mass transfer of ion species across the droplet | water interface. © 1994.

DOI： 10.1016/0022-0728(93)03036-O

Laser trapping and electrochemistry of a single oil droplet in water: Electron transfer across the oil-droplet | electrode interface

Kiyoharu Nakatani, Tatsuya Uchida, Hiroaki Misawa, Noboru Kitamura, Hiroshi Masuhara

Journal of Electroanalytical Chemistry 367 ( 1-2 ) 109 - 114 1994年3月

記述言語：英語

The electrochemistry of ferrocene (FeCp) in a single micrometer-sized nitrobenzene droplet dispersed in water was studied by laser trapping and microelectrochemical techniques. Mass transfer of FeCp, ferrocenium ion, and tetra-n-butylammonium ion between the droplet and water phases accompanied by oxidation of FeCp proceeded across the droplet | water interface. The peak potential of a cyclic voltammogram of FeCp was highly dependent on the potential sweep rate. The potential shift was analyzed by thin-layer electrolysis and the results are discussed in terms of the irreversible electron transfer of FeCp across the droplet | electrode interface and in terms of mass transfer of ion species across the droplet | water interface. © 1994.

DOI： 10.1016/0022-0728(93)03036-O

PHOTOCHEMICAL ACROSS-A-RIDGE Z-E ISOMERIZATION OF (ETHENYL-2-D)ANTHRACENES IN THE TRIPLET-STATE

T KARATSU, H MISAWA, M NOJIRI, N NAKAHIGASHI, S WATANABE, A KITAMURA, T ARAI, H SAKURAGI, K TOKUMARU

JOURNAL OF PHYSICAL CHEMISTRY 98 ( 2 ) 508 - 512 1994年1月

記述言語：英語出版者・発行元：AMER CHEMICAL SOC

Deuterated ethenylanthracenes, 1-, 2-, and 9-(ethenyl-(Z)-2-d)anthracene, and 2-(ethenyl-(E)-2-d)anthracene ((Z)-1-, 2-, and 9-EAD, and (E)-2-EAD, respectively) undergo photochemical Z-E isomerization under thermal activation. The temperature dependence of their isomerization quantum yields and the temperature independence of lifetimes of their T-n <-- T-1 absorptions indicate that EADs isomerize adiabatically between the Z and E isomers in the lowest excited triplet state by overcoming an activation barrier (E(a) = 19-46 kJ mol(-1)) of the perpendicularly twisted geometry. The activation parameters of isomerization, Delta H double dagger (17-42 kJ mol(-1)) and Delta S double dagger (-40 to -113 J K-1 mol(-1)), decrease in the order of 2-, 1-, and 9-isomers; however, Delta G double dagger (50-54 kJ mol(-1)) is almost constant irrespective of the substitution position of the anthracene nucleus.

DOI： 10.1021/j100053a026

Absonption Microspectroscopy on Zinc Tetraphenylporphyrin in an Individual Droplet in Water (共著)

J. Phys. Chem. 98 ( 3073 ) 1994年

Absorption microspectroscopy of zinc tetraphenylporphyrin in an individual droplet in water

Seiji Funakura, Kiyoharu Nakatani, Hiroaki Misawa, Noboru Kitamura, Hiroshi Masuhara

Journal of Physical Chemistry 98 ( 12 ) 3073 - 3075 1994年

記述言語：英語

An absorption microspectroscopy system was developed for absorption measurements of a laser-manipulated individual microdroplet in water under an optical microscope. Absorption spectra of various sizes of individual tri-n-butyl phosphate (TBP) microdroplets containing zinc tetraphenylporphyrin (ZnTPP) were studied as a model. Absorbance of ZnTPP in the droplet was confirmed to increase linearly with the diameter of the droplet, showing that the Lambert-Beer law is followed for droplets with a diameter larger than 6 μm. The concentration of ZnTPP in the droplet dispersed in water is lower than that for pure TBP film by a fixed proportion, which was considered in terms of a constant water partition into TBP. © 1994 American Chemical Society.

DOI： 10.1021/j100063a003

Fluorescence Analysis of ANS Interacting with Individual Laser-Trapped Microspheres Having Different Surface Properties (共著)

Chemistry Letters ( 9 ) 1589 - 1592 1994年

OPTICAL MICROMANIPULATION OF A LASING POLYMER PARTICLE IN WATER

K SASAKI, H MISAWA, N KITAMURA, R FUJISAWA, H MASUHARA

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS 32 ( 8B ) L1144 - L1147 1993年8月

記述言語：英語出版者・発行元：JAPAN SOC APPLIED PHYSICS

Optical manipulation of a lasing microparticle in water was demonstrated. A rhodamine B-doped poly(methyl methacrylate) particle was simultaneously manipulated and pumped by 1064 nm CW and 532 nm pulsed Nd3+:YAG laser beams, respectively. Optical interactions between lasing and closely positioned nonlasing particles were studied by a multibeam laser micromanipulation technique.

DOI： 10.1143/JJAP.32.L1144

SIMULTANEOUS MANIPULATION AND LASING OF A POLYMER MICROPARTICLE USING A CW 1064 NM LASER-BEAM

H MISAWA, R FUJISAWA, K SASAKI, N KITAMURA, H MASUHARA

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS 32 ( 6A ) L788 - L790 1993年6月

記述言語：英語出版者・発行元：JAPAN J APPLIED PHYSICS

Simultaneous optical manipulation and lasing of a rhodamine 640-doped polystyrene latex particle in water was demonstrated through irradiation of a single focused 1064 nm CW Nd:YAG laser beam. Lasing of the particle resulting from two-photon absorption was confirmed from periodically spaced peaks in the emission spectrum and from nonlinear (more than quadratic) dependence of the emission intensity upon the incident laser power.

DOI： 10.1143/JJAP.32.L788

CONTROL OF A DYE FORMATION REACTION IN A SINGLE MICROMETER-SIZED OIL-DROPLET BY LASER TRAPPING AND MICROELECTROCHEMICAL METHODS

K NAKATANI, T UCHIDA, S FUNAKURA, A SEKIGUCHI, H MISAWA, N KITAMURA, H MASUHARA

CHEMISTRY LETTERS 4,717 ( 4 ) 717 - 720 1993年4月

記述言語：英語出版者・発行元：CHEMICAL SOC JAPAN

A dye formation reaction between 4-N,N-diethyl-2-methylquinonediimine and a phenol derivative at the oil-droplet/water interface was studied by a microelectrochemical method combined with laser trapping of an individual droplet in an oil-in-water emulsion system. The reaction in a single droplet with almost-equal-to 10 mum diameter was shown to be controlled by the distance between the droplet and a microelectrode.

DOI： 10.1246/cl.1993.717

POLY(N-ISOPROPYLACRYLAMIDE) MICROPARTICLE FORMATION IN WATER BY INFRARED LASER-INDUCED PHOTOTHERMAL PHASE-TRANSITION

M ISHIKAWA, H MISAWA, N KITAMURA, H MASUHARA

CHEMISTRY LETTERS 3,481 ( 3 ) 481 - 484 1993年3月

記述言語：英語出版者・発行元：CHEMICAL SOC JAPAN

Irradiation of a focused 1064 nm laser beam to an aqueous poly(N-isopropylacrylamide) solution resulted in the reversible microparticle (diameter almost-equal-to 7 mum) formation through local heating of water by the laser beam and subsequent phase transition of the polymer solution. The microparticle produced was simultaneously manipulated in three-dimensional space by the incident 1064 nm laser beam.

DOI： 10.1246/cl.1993.481

LASER MANIPULATION AND ASSEMBLING OF POLYMER LATEX-PARTICLES IN SOLUTION

H MISAWA, K SASAKI, M KOSHIOKA, N KITAMURA, H MASUHARA

MACROMOLECULES 26 ( 2 ) 282 - 286 1993年1月

記述言語：英語出版者・発行元：AMER CHEMICAL SOC

Three-dimensional laser manipulation of polymer latex particles in solution was demonstrated. Polymer latex particles with a diameter of several microns were spatially aligned in arbitrary patterns (letters and geometrical figures) by repetitively scanning a focused laser beam (1064 nm) under an optical microscope. Irradiation of nanosecond or picosecond 355-nm laser pulses on individual laser-trapped polymer particles in a sample solution containing polymerizable vinyl monomers and a photoinitiator brought about permanent fixation of the particles in three-dimensional structures. Possible roles of the laser trapping/manipulation techniques in studying the chemistry and physics of polymeric microparticles are also discussed.

DOI： 10.1021/ma00054a006

レーザー光によるアクチュエーション

三澤弘明

M&E（工業調査会） ( 7 ) 102 - 110 1993年

レーザー走査型マニピュレ—ション

三澤弘明, 増原宏

レーザー研究 21 ( 1 ) 146 - 148 1993年

レーザーによる微粒子のマイクロプロセシング

三澤弘明

ケミカルエンジニヤリング 38 ( 8 ) 657 - 662 1993年

Picosecond Lasing Dynamics of a Single Dye-Doped Microparticle in Solution(共著)

Chemical Physics Letter 210 ( 1/3 ) 89 - 93 1993年

Pyrene Excimer Formation in Individual Oil Droplets Dispersed in Gelatin Matrices : Space-and Time-resolved Fluorescence(共著)

Journal of Physical Chemistry 97 ( 8 ) 1701 - 1706 1993年

Electrochemistry and Fluorescence Spectroscopy on a Single, Laser-Trapped Oil Droplet in Water : Mass Transfer across Microdroplet-Water Interface(共著)

Journal of Physical Chemistry 97 ( 20 ) 5197 - 5199 1993年

LASER TWEEZERING AND ASSEMBLING OF POLYMER LATEX-PARTICLES IN SOLUTION

H MISAWA, K SASAKI, M KOSHIOKA, N KITAMURA, H MASUHARA

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 203 362 - POLY 1992年4月

A SPECTROSCOPIC STUDY ON VOLUME EXPANSION PROCESSES OF PHOTORESPONSIVE ACRYLAMIDE MICROGELS

N KITAMURA, M ISHIKAWA, N TAMAI, H MISAWA, H MASUHARA

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 203 350 - POLY 1992年4月

PHOTOPHYSICS AND PHOTOCHEMISTRY OF A LASER-MANIPULATED POLYMER MICROSPHERE

H MASUHARA, N KITAMURA, H MISAWA, K SASAKI, M KOSHIOKA

ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY 203 599 - POLY 1992年4月

PYRENE EXCIMER FORMATION DYNAMICS IN A SINGLE MICROCAPSULE BY SPACE-RESOLVED AND TIME-RESOLVED FLUORESCENCE SPECTROSCOPY

M KOSHIOKA, H MISAWA, K SASAKI, N KITAMURA, H MASUHARA

JOURNAL OF PHYSICAL CHEMISTRY 96 ( 7 ) 2909 - 2914 1992年4月

記述言語：英語出版者・発行元：AMER CHEMICAL SOC

Fluorescence characteristics of a single microcapsule containing a toluene solution of pyrene were studied by three-dimensional space- and time-resolved fluorescence spectroscopy. Although pyrene excimer formation dynamics observed for the microcapsules by spatially-unresolved spectroscopy did not obey simple excimer formation kinetics (i.e., Birks kinetic model), that for a single microcapsule measured by spatially-resolved spectroscopy was shown to be described by the Birks kinetics model. The efficiency and dynamics of the excimer formation in individual capsules were different between the capsules owing to the concentration distribution of pyrene in the capsules. The importance of dynamic fluorescence spectroscopy for an individual small particle is discussed.

DOI： 10.1021/j100186a024

OPTICAL TRAPPING OF A METAL-PARTICLE AND A WATER DROPLET BY A SCANNING LASER-BEAM

K SASAKI, M KOSHIOKA, H MISAWA, N KITAMURA, H MASUHARA

APPLIED PHYSICS LETTERS 60 ( 7 ) 807 - 809 1992年2月

記述言語：英語出版者・発行元：AMER INST PHYSICS

Laser trapping of a metal particle in water or a water droplet in liquid paraffin, which cannot be attained by irradiation of a TEM00 mode focused laser beam, was experimentally confirmed based on a scanning laser trapping technique. Although a metal particle or a water droplet experiences repulsive radiation force from a laser beam (1064 nm, focused into a approximately 1-mu-m spot), scanning of the laser beam circularly around the particle was successful to optically trap and tweezer the particle. Water and ethylene glycol droplets dispersed in liquid paraffin were also shown to be manipulated independently by scanning double laser-beam trapping.

DOI： 10.1063/1.107427

SIMULTANEOUS MEASUREMENTS OF ABSORBENCY AND VOLUME CHANGES OF A PHOTORESPONSIVE POLYACRYLAMIDE MICROGEL IN WATER

M ISHIKAWA, H MISAWA, N KITAMURA, M IRIE, H MASUHARA

CHEMISTRY LETTERS 2,311 ( 2 ) 311 - 314 1992年2月

記述言語：英語出版者・発行元：CHEMICAL SOC JAPAN

The dynamics of photostimulated volume expansion of a polyacrylamide microgel containing triphenylmethane leucocyanide (TPMCN) in water was studied by simultaneous measurements of the time response of absorbance of triphenylmethyl cation (Abs(t)) and the radius of the gel (R(t)). The time response of the degree of ionic dissociation of TPMCN (alpha(t)) in the gel was obtained by analyzing Abs(t) and R(t) for the first time. The change in R(t) was shown to be slower than that in alpha(t).

DOI： 10.1246/cl.1992.311

MULTIBEAM LASER MANIPULATION AND FIXATION OF MICROPARTICLES

H MISAWA, K SASAKI, M KOSHIOKA, N KITAMURA, H MASUHARA

APPLIED PHYSICS LETTERS 60 ( 3 ) 310 - 312 1992年1月

記述言語：英語出版者・発行元：AMER INST PHYSICS

A multibeam laser trapping-reaction system was developed to demonstrate independent manipulation of plural microparticles as well as to induce photochemical reaction in a laser-trapped particle(s). Photopolymerization of vinyl monomers dissolved in a sample solution was employed to fix polystyrene latex particles regularly aligned by laser trapping. Integrated latex structures created by the successive manipulation/polymerization procedures were also shown to be freely manipulated by laser beams.

DOI： 10.1063/1.106695

レーザー走査マイクロマニピュレ—ション

三澤弘明, 笹木敬司

光学 21 ( 2 ) 91 - 92 1992年

レーザーマニピュレ—ション

三澤弘明

高分子 41 ( 9 ) 658 - 658 1992年

微粒子のレーザー捕捉・配列法と動的光計測

笹木敬司, 三澤弘明

光技術コンタクト 30 ( 7 ) 363 - 370 1992年

Enzyme-like Activity of Albumins on the Thermal Back Reaction of a Photochromic Spirobenzopyran(共著)

Journal of the American Chemical Society 114 ( 11 ) 4417 - 4418 1992年

3-DIMENSIONAL OPTICAL TRAPPING AND LASER ABLATION OF A SINGLE POLYMER LATEX PARTICLE IN WATER

H MISAWA, M KOSHIOKA, K SASAKI, N KITAMURA, H MASUHARA

JOURNAL OF APPLIED PHYSICS 70 ( 7 ) 3829 - 3836 1991年10月

記述言語：英語出版者・発行元：AMER INST PHYSICS

We developed a laser trapping-ablation system comprised of CW and pulsed Nd3+:YAG lasers as well as of an optical microscope. Three-dimensional manipulation of various kinds of particles and laser ablation of a single optically trapped, poly(methyl methacrylate) latex particle in water were demonstrated. A minute hole with its diameter of approximately sub-mu-m was fabricated on the latex particle (approximately 6-mu-m diameter). The hole size produced was much smaller than the effective diameter of the excitation laser beam, suggesting nonlinear optical (self-focusing of the laser beam) and photochemical (multiphoton absorption) mechanisms for the present laser trapping ablation. Characteristic features of the laser trapping-ablation are discussed in detail.

DOI： 10.1063/1.350344

SPATIAL PATTERN-FORMATION, SIZE SELECTION, AND DIRECTIONAL FLOW OF POLYMER LATEX-PARTICLES BY LASER TRAPPING TECHNIQUE

H MISAWA, M KOSHIOKA, K SASAKI, N KITAMURA, H MASUHARA

CHEMISTRY LETTERS 3,469 ( 3 ) 469 - 472 1991年3月

記述言語：英語出版者・発行元：CHEMICAL SOC JAPAN

Polystyrene latex particles with the diameter of almost-equal-to 1-mu-m in water were laser trapped in spatial images of a laser beam. For a mixture of latex particles with different diameters, delicate tuning of the images resulted in size selection of the particles. Directional flow of the particles in water was also achieved by laser irradiation.

DOI： 10.1246/cl.1991.469

極微変換へのアプローチ(I):微粒子のレーザーマニピュレ—ション

三澤弘明, 増原宏

レーザー研究 19 ( 5 ) 433 - 439 1991年

レーザーマニピュレ—ションによる単一微粒子の化学

三澤弘明, 増原宏

光アライアンス 2 ( 6 ) 23 - 26 1991年

Laser Manipulation and Ablation of a Single Microcapsule in Water(共著)

Journal of the American Chemical Society 113 ( 21 ) 7859 - 7863 1991年

Laser-scanning micromanipulation and spatial patterning of fine particles

Keiji Sasaki, Masanori Koshioka, Hiroaki Misawa, Noboru Kitamura, Hiroshi Masuhara

Japanese Journal of Applied Physics 30 ( 5 ) 907 - 909 1991年

記述言語：英語

Laser-scanning micromanipulation and spatial patterning of polystyrene latex or titanium dioxide particles in solution were demonstrated for the first time. A trapping laser beam was repetitionary scanned at 13-50 Hz by computer-controlled galvano mirrors to align micrometer-order particles along the pattern produced by the scanning laser beam. Characteristic features of the present technique are discussed. © 1991 The Japan Society of Applied Physics.

DOI： 10.1143/JJAP.30.L907

LASER TRAPPING, SPECTROSCOPY, AND ABLATION OF A SINGLE LATEX PARTICLE IN WATER

H MISAWA, M KOSHIOKA, K SASAKI, N KITAMURA, H MASUHARA

CHEMISTRY LETTERS 8,1479 ( 8 ) 1479 - 1482 1990年8月

水中における単一高分子微粒子のレーザー捕捉・分光・アブレーション

8,1479 1990年

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