研究者詳細 - 林　靖彦

論文 - 林　靖彦

分割表示 262 件中 161 - 180 件目／全件表示 >>

Direct Growth of Horizontally Aligned Carbon Nanotubes between Electrodes and Its Application to Field-Effect Transistors 査読

Yasuhiko Hayashi, B. Jang, T. Iijima, T. Tokunaga, R. A. Afre, M. Tanemura, G. A. J. Amaratunga

INEC: 2010 3RD INTERNATIONAL NANOELECTRONICS CONFERENCE, VOLS 1 AND 2 215 - + 2010年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：IEEE

This paper presents direct growth of horizontally aligned carbon nanotubes (CNTs) between two predefined various inter-spacing up to tens of microns of electrodes (pads) and its use as CNT field-effect transistors (CNT-FETs). The catalytic metals were prepared, consisting of iron (Fe), aluminum (Al) and platinum (Pt) triple layers, on the thermal silicon oxide substrate (Pt/Al/Fe/SiO2). Scanning electron microscopy measurements of CNT-FETs from the as-grown samples showed that over 80% of the nanotubes are grown across the catalytic electrodes. Moreover, the number of CNTs across the catalytic electrodes is roughly controllable by adjusting the growth condition. The Al, as the upper layer on Fe electrode, not only plays a role as a barrier to prevent vertical growth but also serves as a porous medium that helps in forming smaller nano-sized Fe particles which would be necessary for lateral growth of CNTs. Back-gate field effect transistors were demonstrated with the laterally aligned CNTs. The on/off ratios in all the measured devices are lower than 100 due to the drain leakage current.

DOI： 10.1109/INEC.2010.5424640

その他リンク： http://orcid.org/0000-0002-4113-5548

Morphology control of rapid grown vertically aligned carbon nanotube forest for fiber spinning 査読

T. Iijima, H. Oshima, Y. Hayashi, U. B. Suryavanshi, A. Hayashi, M. Tanemura

Proceedings - 2010 8th International Vacuum Electron Sources Conference and Nanocarbon, IVESC 2010 and NANOcarbon 2010 404 - 405 2010年

記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

Rapid grown vertically aligned carbon nanotubes forests (VACNFs) have received enormous attention for nanotube spinning. VACNFs are composed of not only straight CNTs, those are parallel to each other, but also curly CNTs. The bundle formation and alignment in VACNFs are crucial for spinnability of CNT fibers. In the present study, we present the effect of morphology control of VACNFs on fibers spinning. © 2010 IEEE.

DOI： 10.1109/IVESC.2010.5644118

その他リンク： http://orcid.org/0000-0002-4113-5548

Fabrication of well ordered Zn nanorod arrays by ion irradiation method at room temperature and effect on crystal orientations 査読

Masaki Kutsuna, Pradip Ghosh, Masato Kudo, Masaki Tanemura, Yasuhiko Hayashi

APPLIED SURFACE SCIENCE 256 ( 5 ) 1481 - 1485 2009年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

Highly oriented and densely packed one-dimensional (1D) polycrystalline Zn nanorods were fabricated on zinc plate without any catalyst at room temperature by bombardment with obliquely incident Ar(+) ion via ion irradiation method. The sputtered surfaces were fully covered with Zn nanostructures with diameter and the length around 60 nm and 1.3 mu m, respectively, confirmed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The crystal orientation of the Zn plate was investigated by electron back scattering pattern method (EBSP). The numerical density and morphology of Zn nanostructures (nanoneedle or nanorods) were found to be 2.1 x 10(6) to 9 x 10(6)/mm(2) depending upon the crystal orientation and the atomic density on different crystallographic faces. (2 (1) over bar(1) over bar0) faces of Zn polycrystal tended to form more dense nanostructures compared to (000 (1) over bar ) faces. This is because of lower atomic density on (2 (1) over bar(1) over bar0) faces in comparison with (000 (1) over bar )faces. This indicates that lower atomic density on any crystallographic faces is favorable to form nanostructure of higher density. The outstanding feature of this growth technique is that it provides a new direction for the controllable growth of desired nanostructures of variable density at room temperature without any catalyst. These well-aligned arrays of Zn nanorods/nanoneedle might be a promising material for the future application in nanodevices. (C) 2009 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.apsusc.2009.09.007

その他リンク： http://orcid.org/0000-0002-4113-5548

Low-Temperature Fabrication of Ion-Induced Ge Nanostructures: Effect of Simultaneous Al Supply 査読

Ako Miyawaki, Toshiaki Hayashi, Masaki Tanemura, Yasuhiko Hayashi, Tomoharu Tokunaga, Tetsuo Soga

IEICE TRANSACTIONS ON ELECTRONICS E92C ( 12 ) 1417 - 1420 2009年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG

Ge surfaces were irradiated by Ar+ ions at 600eV with and without simultaneous supply of Ge or At at room temperature. The surfaces ion-irradiated without any simultaneous metal supply were characterized by densely distributed conical protrusions. By contrast, various kinds of nanostructures were formed on the Ge surfaces ion-irradiated with a simultaneous metal supply. They featured cones and nanobelts with a flattened top for Ge supply cases, whereas they were characterized by the nanorods, nanobelts and nanowalls for Al supply cases. Very interestingly, most of the nanorods and nanobelts formed with an Al supply possessed a bottleneck structure. Thus, the Ge nanostructures were controllable in morphology by species and amount of simultaneously supplied metals.

DOI： 10.1587/transele.E92.C.1417

その他リンク： http://orcid.org/0000-0002-4113-5548

Morphological Control of Ion-Induced Carbon Nanofibers and Their Field Emission Properties 査読

Mohd Zamri Bin Mohd Yusop, Pradip Ghosh, Zhipeng Wang, Masaki Tanemura, Yasuhiko Hayashi, Tetsuo Soga

IEICE TRANSACTIONS ON ELECTRONICS E92C ( 12 ) 1449 - 1453 2009年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG

Carbon nanofibers (CNFs) were fabricated on graphite plates using "Ar+ ion sputtering method" in large amount at room temperature. The morphology of CNFs was controlled by a simultaneous carbon supply during ion sputtering. CNF-tipped cones were formed on graphite plate surfaces without carbon supply whereas those with a simultaneous carbon supply featured mainly needle-like protrusions of large size. The field electron emission (FE) properties, measured using parallel plate configurations in 10(-4) Pa range, showed the threshold fields of 4.4 and 5.2 V/mu m with a current density of 1 mu A/cm(2) for CNF-tipped cones and needle-like protrusion, respectively. Reliability test results indicated that CNF-tipped cones were more stable than needle-like protrusion. The morphological change after reliability test showed a so-called "self-regenerative" process and structure damage for CNF-tipped cones and needle-like protrusions, respectively.

DOI： 10.1587/transele.E92.C.1449

その他リンク： http://orcid.org/0000-0002-4113-5548

Ferromagnetic and Optical Properties of Partially Cu-Doped ZnO Films 査読

Fan-Yong Ran, Masaki Tanemura, Yasuhiko Hayashi, Norihiro Ide, Masao Imaoka, Tun-Seng Herng, Shu-Ping Lau

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES 64 ( 11 ) 765 - 768 2009年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：VERLAG Z NATURFORSCH

Wurtzite structure ZnO films (3 x 3 mm(2)) with a partial-area Cu doping were successfully prepared using a micro-area Ar(+)-ion beam (similar to 380 mu m in diameter) and a simultaneous Cu supply at room temperature. A Cu(2)O phase was formed in the ZnO films by Cu doping. The partially Cu-doped ZnO films exhibited room-temperature ferromagnetism (RTFM) with a saturation magnetization of 1.6 x 10(-5) emu and a coercive field of 40 Oe. Since Zn, Cu, and their compounds are not ferromagnetic, the observed RTFM is attributed to the intrinsic property of Cu-doped ZnO films. As confirmed by the low temperature photoluminescence (PL) spectra, no serious optical damage was recongnized in the region without Ar(+)-ion irradiation. Thus, it was believed that the micro-area Ar(+)-ion irradiation. Thus, it was believed that the micro-area Ar(+)-ion irradiation with a simultaneous Cu supply was promising to integrate the magnetic and optical properties of ZnO-based materials.

その他リンク： http://orcid.org/0000-0002-4113-5548

Effect of liquid nitrogen treatment on the structural, electrical and optical properties of indium tin oxide coated glass substrate 査読

Rakesh A. Afre, Yasuhiko Hayashi, Tetsuo Soga, Golap Kalita, Masayoshi Umeno

CHEMICAL PHYSICS LETTERS 481 ( 1-3 ) 68 - 72 2009年10月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

Influence of liquid nitrogen on the structural, electrical and optical properties of indium tin oxide (ITO) coated glass substrates, has been studied. These studies indicate that treatment of the ITO coated glass substrates with liquid nitrogen is found to reduce the surface roughness, concomitant with the increase in contact angle up to a critical value, followed by its decrease upon prolonged treatment. Optical transmittance study of the ITO glass substrate shows the increase in transmittance of >90% and X-ray diffraction studies show the negligible change in structural properties while FWHM of the peak at 2 theta = 30.48 degrees for (222) has been reduced with increase in treatment time. (C) 2009 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.cplett.2009.09.039

その他リンク： http://orcid.org/0000-0002-4113-5548

Ferromagnetism in Cu-doped AlN films 査読

Fan-Yong Ran, M. Subramanian, Masaki Tanemura, Yasuhiko Hayashi, Takehiko Hihara

APPLIED PHYSICS LETTERS 95 ( 11 ) 2009年9月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER INST PHYSICS

AlN films doped with 3.2-8.2 at. % Cu were deposited by helicon magnetron sputtering. The films exhibited ferromagnetism with a Curie temperature above 360 K. The observed magnetic anisotropy and exclusion of ferromagnetic contamination indicated that the ferromagnetism was the intrinsic property of Cu-doped AlN films. Room-temperature (RT) saturation magnetization (M(s)) tended to decrease with increasing Cu concentration and the maximum RT Ms obtained was about 8.5 emu/cm(3) (0.6 mu(B)/Cu). Vacuum annealing increased the RT M(s) values and meanwhile reduced ratio of N/(Al+Cu), which suggested that Al interstitial and N vacancy might contribute to the observed ferromagnetic behavior. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3232238]

DOI： 10.1063/1.3232238

その他リンク： http://orcid.org/0000-0002-4113-5548

Effect of substrate temperature on the room-temperature ferromagnetism of Cu-doped ZnO films 査読

Fan-Yong Ran, Masaki Tanemura, Yasuhiko Hayashi, Takehiko Hihara

JOURNAL OF CRYSTAL GROWTH 311 ( 17 ) 4270 - 4274 2009年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

Wurtzite structure ZnO films doped with similar to 2 at% Cu were deposited at substrate temperatures (T-s) from 350 to 600 degrees C by helicon magnetton sputtering. All the films exhibited room-temperature (RT) ferromagnetism (FM) and the maximum saturation magnetization (M-s) was 1.2 emu/cm(3) (similar to 0.15 mu(B)/Cu). Cu ions were mainly in a divalent state as identified by X-ray photoelectron spectroscopy. FM tended to increase with decreasing T-s, and vacuum annealing enhanced the M-s. These results suggested that oxygen vacancies and/or zinc interstitials might contribute to the ferromagnetic performance. Thus, the observed FM was explained in terms of the defect related mechanism. (C) 2009 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.jcrysgro.2009.07.008

その他リンク： http://orcid.org/0000-0002-4113-5548

Growth and Nanoscale Magnetic Properties of Ferromagnetic Nanowire Encapsulated Inside Carbon Nanotubes 査読

Yasuhiko Hayashi, T. Fujita, T. Toicunaga, B. Jang, M. Tanemura, G. A. J. Amaratunga

IEEE TRANSACTIONS ON MAGNETICS 45 ( 6 ) 2488 - 2491 2009年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

We synthesize ferromagnetic Co nanowire, and Co/Pd multisegment nanowires encapsulated inside multi-walled carbon nanotubes CNTs (MWCNTs) by plasma-enhanced chemical vapor deposition (PECVD). High-resolution transmission electron microscopy (HR-TEM), selected area electron diffraction (SAED) patterns and energy dispersive X-ray spectroscopy (EDS) were used to characterize the microstructures and elemental analyses of the nanowires. Quantitative magnetization measurements of Co nanowires encapsulated inside MWCNTs were experimentally established by TEM off-axis electron holography at room temperature. The MWCNTs grew up to 100-110 nm in diameter and 1.5-1.7 mu m in length. The typical bright-field TEM images revealed both Co nanowire and Co/Pd multisegment nanowires encapsulated inside vertically aligned MWCNTs on the same substrate. The composition of metal encapsulated inside MWCNTs were characterized by EDS. Experimental results revealed that the Co nanowire encapsulated inside MWCNT was always presented as the face-centered-cubic (fcc) Co structure. The component of magnetic induction was then measured to be 1.2 +/- 0.1 T based on TEM off-axis electron holography results, which is lower than the expected saturation magnetization of fcc Co bulk of 1.7 T. The partial oxidation of the ferromagnetic metal during the process and the magnetization direction may play an important role in the determination of the quality of the remanent states. The ferromagnetic metal nanowires encapsulated inside CNTs demonstrate very high potential in providing the required magnetic properties, low dimensionality, and small volume for future nanoscale devices.

DOI： 10.1109/TMAG.2009.2018668

その他リンク： http://orcid.org/0000-0002-4113-5548

Room-temperature ferromagnetism of Cu-doped ZnO films deposited by helicon magnetron sputtering 査読

Fan-Yong Ran, Masao Imaoka, Masaki Tanemura, Yasuhiko Hayashi, Tun-Seng Herng, Shu-Ping La

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS 246 ( 6 ) 1243 - 1247 2009年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WILEY-V C H VERLAG GMBH

Wurtzite structure ZnO films doped with 0.5 and 1.7 at% Cu were deposited by helicon magnetron sputtering. The prepared films exhibited room-temperature (RT) ferromagnetism (FM). Maximum RT saturation magnetization of 2 emu/cm (similar to 0.3(mu B)/Cu) was observed for ZnO films with 1.7 at% Cu. Cu ions were in a bivalent state as identified by X-ray photoelectron spectroscopy (XPS). In photoluminescence spectra, the green emission peak increased and redshifted due to the incorporation of Cu or defects induced by Cu incorporation Since. Cu and Cu related oxides are not RT ferromagnetic and no trace of ferromagnetic-contamination was detected in XPs results, the observed FM is considered to be an intrinsic property of Cu-doped ZnO films. The FM was thought to originate from defect-related mechanisms. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

DOI： 10.1002/pssb.200945091

その他リンク： http://orcid.org/0000-0002-4113-5548

Synthesis of Covalently Linked Phthalocyanine-C60 Dyad via a Flexible Carbon Linker 査読

Daisuke Sukeguchi, Hideyuki Yoshiyama, Surya, Prakash Singh, Norio Shibata, Shuichi Nakamura, Takeshi Toru, Yasuhiko Hayashi, Tetsuo Soga

Heterocycl. Commun. Freund Publishing House 3 ( 15 ) 195 - 202 2009年6月

Synthesis and spectroscopic investigation of trifluoroethoxy-coated phthalocyanine linked with fullerene 査読

Daisuke Sukeguchi, Hideyuki Yoshiyama, Norio Shibata, Shuichi Nakamura, Takeshi toru, Yasuhiko Hayashi, Tetsuo Soga

JOURNAL OF FLUORINE CHEMISTRY 130 ( 3 ) 361 - 364 2009年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE SA

Synthesis and spectroscopic investigation of trifluoroethoxy-coated phthalocyanine-fullerene dyad 2 has been described. While nonfluorinated phthalocyanine-fullerene dyad 1 showed an efficient property of intramolecular photoinduced electron transfer, dyad 2, regardless of its covalently linked dyad system, appears not to show any electronic communication between fullerene and phthalocyanine. This observation is presumably due to the strong electron withdrawing nature of 12 trifluoroethoxy groups; fluorine leads phthalocyanine to become an acceptor whose electronic accepting property is equivalent to that of fullerene. This is a unique example that fluorine can terminate electronic communication in the covalently fullerene-phthalocyanine dyad system. (C) 2008 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.jfluchem.2008.11.005

その他リンク： http://orcid.org/0000-0002-4113-5548

Application of ion-induced carbon nanocomposite fibers to magnetic force microscope probes 査読

Yoshitaka Sugita, Masashi Kitazawa, M. Zamri M. Yusop, Masaki Tanemura, Yasuhiko Hayashi, Ryo Ohta

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B 27 ( 2 ) 980 - 983 2009年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：A V S AMER INST PHYSICS

Small-scale batch fabrication of Co-included carbon nanofibers (Co-CNFs) onto commercially available Si cantilevers for scanning probe microscope by an Ar+-ion-irradiation method with a simultaneous Co supply was demonstrated (eight chips/batch). As confirmed by scanning and transmission electron microscopes equipped with energy dispersive x-ray spectroscopy, Co-CNFs were fibrous and contained Co and C. With increasing the Co supply rate, Co-CNFs decreased in length from similar to 600 to similar to 400 nm, whereas their diameter was almost independent of the Co supply rate, 20-30 nm. As proven by magnetic force microscope (MFM) measurements using the Co-CNF probes, they were applicable as MFM probes. Since various metals including alloys can be incorporated into CNFs, this ion-irradiation method with a simultaneous metal supply was believed to be quite promising for the functionalization of CNF probes for a variety of applications. (C) 2009 American Vacuum Society. [DOI: 10.1116/1.3010730]

DOI： 10.1116/1.3010730

その他リンク： http://orcid.org/0000-0002-4113-5548

New diarylmethanofullerene derivatives and their properties for organic thin-film solar cells 査読

Daisuke Sukeguchi, Surya Prakash Singh, Mamidi Ramesh Reddy, Hideyuki Yoshiyama, Rakesh A. Afre, Yasuhiko Hayashi, Hiroki Inukai, Tetsuo Soga, Shuichi Nakamura, Norio Shibata, Takeshi Toru

BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY 5 2009年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：BEILSTEIN-INSTITUT

A number of diarylmethanofullerene derivatives were synthesized. The cyclopropane ring of the derivatives has two aryl groups substituted with electron-withdrawing and -donating groups, the latter with long alkyl chains to improve solubility in organic solvents, an important property in processing cells. First reduction potentials of most derivatives were less negative than that of [6,6]-phenyl-C61-butyric acid methyl ester (PCBM), which is possibly ascribed to their electron-withdrawing nature. Organic thin-film photovoltaic cells fabricated with poly(3-hexylthiophene) (P3HT) as the electron-donor and diarylmethanofullerene derivatives as the electron-acceptor material were examined. The {(methoxycarbonyl) phenyl[bis(octyloxy)phenyl] methano} fullerene showed power conversion efficiency as high as PCBM, but had higher solubility in a variety of organic solvents than PCBM. The V(oc) value was higher than that of PCBM, which is derived from the electron-donating (octyloxy) phenyl group, possibly raising the LUMO level. Photovoltaic effects of the devices fabricated with the derivatives having some electron-withdrawing groups were also examined.

DOI： 10.3762/bjoc.5.7

その他リンク： http://orcid.org/0000-0002-4113-5548

Synthesis and characterization of carbon nanotube grown on flexible and conducting carbon fiber sheet for field emitter 査読

Yasuhiko Hayashi, K. Suzuki, B. Jang, T. Tokunaga, H. Matsumoto, M. Tanemura, A. Tanioka, G. A. J. Amaratunga

DIAMOND AND RELATED MATERIALS 18 ( 2-3 ) 341 - 344 2009年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE SA

We have successfully demonstrated the multiwall carbon nanotube (MWCNT) based field emission cathode fabricated on highly porous, flexible and conductive carbon fiber (CF) sheet without damage of CF sheet by chemical vapor deposition. CF sheet was composed of thin fibers with diameter of about 3 pm prepared by electrospray deposition. Well aligned MWCNTs grown on, or well anchored to. the flexible CF sheet was confirmed by transmission electron microscope. The field enhancement factor for MWCNT emitter fabricated on CF sheet was about 14,000 and 1.6 times higher than that of MWCNT emitter fabricated on Si substrate. Scanning electron microscopy image indicates that the electron emission occurred from the MWCNT field emitter arrays grown on carbon fibers not only at surface but also under layers in CF sheet. Field emission measurements revealed that this flexible MWCNT field emitter array has a great potential for the flexible field emission displays. (C) 2008 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.diamond.2008.09.014

その他リンク： http://orcid.org/0000-0002-4113-5548

Enhanced photovoltaic device performance upon modification of indium tin oxide coated glass by liquid nitrogen treatment 査読

Rakesh A. Afre, Yasuhiko Hayashi, Tetsuo Soga

JOURNAL OF PHYSICS D-APPLIED PHYSICS 42 ( 4 ) 2009年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：IOP PUBLISHING LTD

We demonstrate the improvement in the surface properties of an indium tin oxide (ITO) anode contact to an organic bulk-heterojunction device via cooling down the ITO glass substrate by liquid nitrogen treatment. This treatment effectively improves the smoothness of ITO glass, the transmittance and the contact angle measurement, which thereby results in fairly good contact with organic material. The enhancement of short circuit current, efficiency and fill factor of the photovoltaic devices was also achieved. The surface properties of both the untreated and the treated ITO substrates were studied by atomic force microscopy and the electrical properties of the substrates were studied by the Hall effect measurement.

DOI： 10.1088/0022-3727/42/4/042002

その他リンク： http://orcid.org/0000-0002-4113-5548

Room-temperature synthesis and characterisation of ion-induced iron-carbon nanocomposite fibres 査読

Zhipeng Wang, Kohei Yamaguchi, Daiki Takeuchi, Yasuhiko Hayashi, Masaki Tanemura

INTERNATIONAL JOURNAL OF NANOTECHNOLOGY 6 ( 7-8 ) 753 - 761 2009年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：INDERSCIENCE ENTERPRISES LTD

Graphite plates were Ar(+) ion-irradiated with and without a simultaneous Fe supply at room temperature. The surfaces ion-irradiated without an Fe supply were covered with densely distributed conical projections with a carbon nanofibre (CNF) on file top. The CNFs thus grown were 20-50 nm in diameter and 0.3-2 mu m in length. By contrast, the graphite surfaces ion-bombarded with a simultaneous Fe supply were characterised by various kinds of carbon composites, such as conical protrusions with and without a single carbon nanocomposite fibre (CNCF) on the top, depending oil the Fe supply rates. As confirmed by transmission electron microscope (TEM), the CNCFs thus grown were amorphous-like and possessed no hollow structure. Energy dispersive X-ray analysis disclosed that CNCFs consisted of carbon and iron, and quite fine Fe crystallites were dispersed over the CNCF. Since various metals can be incorporated into the room-temperature grown carbon nanofibres, this ion-irradiation method is believed to be promising as a new approach to synthesise one-dimensional (1-D) nanomaterials at low temperatures.

DOI： 10.1504/IJNT.2009.025313

その他リンク： http://orcid.org/0000-0002-4113-5548

SYNTHESIS AND SPECTRAL INVESTIGATIONS OF COVALENTLY LINKED PHTHALOCYANINE-C-60 DYAD VIA FLEXIBLE CARBON LINKER 査読

Daisuke Sukeguchi, Hideyuki Yoshiyama, Surya Prakash Singh, Norio Shibata, Shuichi Nakamura, Takeshi Toru, Yasuhiko Hayashi, Tetsuo Soga

HETEROCYCLIC COMMUNICATIONS 15 ( 4 ) 263 - 272 2009年

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WALTER DE GRUYTER & CO

Phthalocyanine-C-60 dyad 1 via a flexible saturated carbon linker was synthesized. The UV/Vis and fluorescence spectra studies of I revealed that intramolecular, not intermolecular, photoinduced electronic communication was observed in the solution state. We also examined UV-Vis and fluorescence spectra of a mixture of C-60 and conventional tetra tert-Bu phthalocyanine 2 for comparison

その他リンク： http://orcid.org/0000-0002-4113-5548

Efficient carbon nanotube field emitter using electrospun carbon nanofibers as a flexible electrode 査読

Matsumoto H, Suzuki K, Tsuboi K, Minagawa M, Tanioka A, Hayashi Y, Fukuzono K, Amaratunga G.A.J

Materials Research Society Symposium Proceedings 1173 7 - 12 2009年

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