Faculty Profiles - HAYASHI Yasuhiko

MISC - HAYASHI Yasuhiko

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Fabrication of tin-filled carbon nanofibres by microwave plasma vapour deposition and their in situ heating observation by environmental transmission electron microscopy. Reviewed International journal

Tomoharu Tokunaga, Takumi Kanematsu, Takahumi Ito, Takahisa Ota, Yasuhiko Hayashi, Katsuhiro Sasaki, Takahisa Yamamoto

Nanoscale research letters 8 ( 1 ) 302 - 302 2013.6

Language：English

Sn-filled carbon nanofibres (CNFs) are fabricated by microwave plasma chemical deposition. Scanning electron microscopy observations revealed the existence of a Sn island under the CNFs. The structure of the CNFs is investigated, and the behaviour of Sn in the internal space of CNFs is revealed by performing in situ heating observations by environmental transmission electron microscopy (ETEM). ETEM observations reveal that they have low-crystallized carbon wall and Sn occupies not only the CNF's internal space but also its carbon wall. The Sn inside the CNF is completely covered by the carbon wall. Further, the in situ heating observations reveal that Sn within the internal space and the carbon wall of the CNFs diffused to the outside during heating. Moreover, it is found that higher membered carbon rings and defects in the graphite layer act as diffusion routes between disordered carbon layers.

DOI： 10.1186/1556-276X-8-302

PubMed

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C-13-10 Interface control of polymer solar cell by polyethylene glycol

Kawakita Takafumi, Karakasa Yasuhiro, Sakakibara Yuya, Hayashi Yasuhiko, Soga Tetsuo, Kalita Golap, Tanemura Masaki

Proceedings of the Society Conference of IEICE 2012 ( 2 ) 129 - 129 2012.8

金属充填カーボンナノチューブの成長と磁化特性

堀田義朗, 徳永智春, 佐々木勝寛, 黒田光太郎, 伊藤陽一, 張奉鎔, 林靖彦, 藤田武志

日本金属学会講演概要 144th 308 2009.3

Newly synthesized n-type fullerene derivative and its application to bulk heterojunction solar cells

HAYASHI Yasuhiko, SUKEGUCHI D., INUKAI H., AFRE R., TORU T., NAKAMURA S., SHIBATA T., SOGA T.

IEICE technical report 108 ( 387 ) 39 - 42 2009.1

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

We studied the bulk heterojunction organic solar cell of P3HT and a newly synthesized methanofullerene derivative. The methanofullerene derivative has the electron-withdrawing methoxycarbonylphenyl and electron-donating dioctyloxyphenyl groups attached to the cyclopropane, the former of which lowers the reduction potential of the methanofullerene acceptor and would enhance its acceptability, and the latter of which increases the LUMO level. Compared with PCBM, the open circuit voltage increased upon introducing this molecule as well as by changing the annealing temperature.

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金属充填カーボンナノチューブの成長と磁化特性

堀田義朗, 徳永智春, 佐々木勝寛, 黒田光太郎, 伊藤陽一, 張奉鎔, 林靖彦, 藤田武志

日本金属学会講演概要 143rd 472 2008.9

Recent progress on nanoprobe and nanoneedle

TANEMURA Masaki, KITAZAWA Masashi, SUGITA Yoshitaka, MIYAWAKI Ako, KUTSUNA Masaki, HAYASHI Yasuhiko, LAU Shu Ping

IEICE technical report 108 ( 122 ) 59 - 64 2008.7

Language：English Publisher：The Institute of Electronics, Information and Communication Engineers

Ar^+ ion bombardment of carbon surfaces (both bulk carbon and carbon-coated substrates) induced the growth of conical protrusions, and single carbon nanofibers (CNFs) grew on the tips without any catalyst even at room temperature. CNFs thus grown were typically 20-50nm in diameter and 0.2-10μm in length. Solely standing and densely distributed CNFs were successfully applied to scanning probe microscope (SPM) tips and flexible field electron emission devices, respectively. In addition, low-temperature fabrication of various nanostructures by the ion-irradiation was also demonstrated. Thus, the ion-irradiation method was believed to be promising for the low-temperature fabrication of nanomaterials.

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カーボンファイバーファブリック上に成長させたカーボンナノチューブの電子放出特性

鈴木賢一, 松本英俊, 皆川美江, 谷岡明彦, 林靖彦, 福薗一幸, AMARATUNGA Gehan

高分子学会予稿集(CD-ROM) 57 ( 1 Disk1 ) 2008

カーボンファイバーファブリック上に成長させたカーボンナノチューブの電子放出特性

松本英俊, 鈴木賢一, 今泉伸治, 皆川美江, 谷岡明彦, 林靖彦, 福薗一幸, AMARATUNGA Gehan

高分子学会予稿集(CD-ROM) 57 ( 2 Disk1 ) 2008

磁性金属内包カーボンナノチューブの作製と評価

林靖彦, 藤田武志, 徳永智春, 内藤綱彦, 種村眞幸

応用物理学会学術講演会講演予稿集 68th ( 1 ) 534 2007.9

電子顕微鏡法による材料開発のための微細構造研究最前線(6)ホログラフィー・ローレンツ顕微鏡カーボンナノチューブに充填した円柱状コバルトの磁化測定

藤田武志, 林靖彦, 徳永智春, 山本和生

まてりあ 45 ( 12 ) 896 2006.12

Quantitative Evaluation of Magnetic Induction of Co Fully Encapsulated in Carbon Nanotube

FUJITA Takeshi, HAYASHI Yasuhiko, TOKUNAGA Tomoharu, YAMAMOTO Kazuo

Materia Japan 45 ( 12 ) 896 - 896 2006.12

Characterization of amorphous carbon thin film synthesized by nitrogen radical and methane plasma sources

KAMADA Naoki, HAYASHI Yasuhiko, SOGA Tetsuo, JIMBO Takashi

IEICE technical report. Electron devices 105 ( 89 ) 27 - 31 2005.5

Language：Japanese Publisher：The Institute of Electronics, Information and Communication Engineers

Conductivity of amorphous carbon (a-C) was successfully controlled by incorporation of nitrogen atoms using a double beam method (DBM), where both rf nitrogen radical and rf methane plasma sources were controlled separately to optimize the nitrogen incorporation.

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