高密度・高配向性単層カーボンナノチューブの複合材料化と特性評価

2013 Fiscal Year Annual Research Report

• Project/Area Number: 23760179
• Research Institution: The University of Tokyo
• Principal Investigator: 千足 昇平 東京大学, 工学(系)研究科(研究院), 講師 (50434022)
• Keywords: 単層カーボンナノチューブ / ポリマー / 複合材料

Research Abstract

単層カーボンナノチューブ（single-walled carbon nanotube，SWNT）の合成技術およびポリマー等との複合材料化技術の検討およびそれらの分析・解析を行った．
合成技術においては，水平配向SWNTの配向密度に着目し，合成条件との比較・検討を行った．低圧力条件下での合成において，その成長速度が減少する一方，密度が向上することが分かった．低圧力の場合，個々のSWNTが独立して成長していくことでお互いの配向を妨げることなく高い配向性が得られたのだと考えられる．
水平配向SWNTをチャネルとして用いた電界効果型トランジスタにおいて，ポリマーコーティングされたSWNTに対してジュール加熱を行った際のSWNTの温度上昇や温度分布がコーティングが無い場合と異なることを見いだした．これを応用して，ジュール加熱による広範囲のSWNT酸化除去法を開発し，金属SWNTのみを選択的に除去することに成功した．これは，高性能なSWNTトランジスタ作製につながる重要な結果であり，実際に，この技術を適応することで，高いOn/Off比を有するトランジスタの作製に成功した．
また，ポリマーコーティング時のSWNTを走査型電子顕微鏡，ラマン散乱分光法や原子間力顕微鏡により詳細に分析を行うことで，ポリマーとSWNTとの相互作用を明らかにした．特に，レーザーを走査させ行うラマンイメージング分光法により，個々のSWNTの分析を行うことができた．

Research Products

• [Journal Article] Water Encapsulation Control in Individual Single-Walled Carbon Nanotubes by Laser Irradiation (2014)
  • Author(s): S. Chiashi†, T. Hanashima, R. Mitobe, K. Nagatsu, T. Yamamoto, Y. Homma†,
  • Journal Title: J. Phys. Chem. Lett., Volume: 5 Pages: 408-412
  • DOI: 10.1021/jz402540v
  • Peer Reviewed
• [Journal Article] Effect of Gas Pressure on the Density of Horizontally Aligned Single-Walled Carbon Nanotubes Grown on Quartz Substrates (2013)
  • Author(s): T. Inoue, D. Hasegawa, S. Badar, S. Aikawa, S. Chiashi, S. Maruyama
  • Journal Title: J. Phys. Chem. C Volume: 117 Pages: 11804-11810
  • DOI: 10.1021/jp401681e
• [Journal Article] Photoluminescence measurements and molecular dynamics simulations of water adsorption on the hydrophobic surface of a carbon nanotube in water vapor (2013)
  • Author(s): Y. Homma†, S. Chiashi†, T. Yamamoto†, K. Kono, D. Matsumoto, J. Shitaba, S. Sato,
  • Journal Title: Physical Review Letters Volume: 110 Pages: 157402-1-4
  • DOI: 10.1103/PhysRevLett.110.157402
  • Peer Reviewed
• [Journal Article] Anomalous Thermal Conduction Characteristics of Phase Change Composites with Single Walled Carbon Nanotube Inclusions (2013)
  • Author(s): S. Harish, K. Ishikawa, S. Chiashi, J. Shiomi, S. Maruyama†
  • Journal Title: J. Phys. Chem. C Volume: 117 Pages: 15409-15413
  • DOI: 10.1021/jp4046512
  • Peer Reviewed
• [Journal Article] Self-Assembled Microhoneycomb Network of Single-Walled Carbon Nanotubes for Solar Cells (2013)
  • Author(s): K. Cui, T. Chiba, S. Omiya, T. Thurakitseree, P. Zhao, S. Fujii, H. Kataura, E. Einarsson, S. Chiashi, S. Maruyama†,
  • Journal Title: J. Phys. Chem. Lett. Volume: 4 Pages: 2571-2576
  • DOI: 10.1021/jz401242a
  • Peer Reviewed
• [Presentation] Diameter controlled CVD growth of nitrogen-incorporated single-walled carbon nanotubes (2014)
  • Author(s): S. Maruyama, T. Thurakitseree, C. Kramberger, K. Ogasawara, S. Chiashi, E. Einarsson,
  • Organizer: 28th International Winterschool on the Electronic Properties of Novel Materials Molecular Nanostructure
  • Place of Presentation: Kirchberg in Tirol, Austria
  • Year and Date: 20140308-20140315
• [Presentation] Suspended Single-Walled Carbon Nanotubes as the Probe for Nano-Surface Science (2013)
  • Author(s): Y. Homma, S. Chiashi
  • Organizer: 9th International Symposium on Atomic Level Characterizations for New Materials and Devices '13
  • Place of Presentation: Sheraton Kona, the big island, Hawaii, USA
  • Year and Date: 20131202-20131206
  • Invited
• [Presentation] CVD Growth Control of Single-walled Carbon Nanotubes by Nitrogen (2013)
  • Author(s): T. Thurakitseree, C. Kramberger, S. Chiashi, E. Einarsson, *S. Maruyama
  • Organizer: The 4th Symposium of Emerging Electronics: Nanomaterials for Energy and Electronics
  • Place of Presentation: Jeju Island, Korea
  • Year and Date: 20131110-20131114
• [Presentation] Water Adsorption on the Surface of a Single-walled Carbon Nanotube (2013)
  • Author(s): S. Chiashi, K. Kono, D. Matsumoto, J. Shitaba, S. Sato, T. Yamamoto, Y. Homma
  • Organizer: 26th International Microprocesses and Nanotechnology Conference
  • Place of Presentation: Royton Sapporo,Sapporo, Hokkaido, Japan
  • Year and Date: 20131105-20131108
• [Presentation] Self-Assembled Micro-Honeycomb Network of Single-Walled Carbon Nanotubes for Heterojunction Solar Cells (2013)
  • Author(s): K. Cui, T. Chiba, E. Einarsson, S. Chiashi, S. Maruyama
  • Organizer: 2013 JSAP-MRS Joint Symposia
  • Place of Presentation: Doshisha University, Kyoto, Japan
  • Year and Date: 20130916-20130920
• [Presentation] Evaluation of Water Adsorption States on the Surface of Single-Walled Carbon Nanotube by Photoluminescence Spectroscopy and Imaging Spectroscopy (2013)
  • Author(s): J. Shitaba, S. Chiashi, D. Matsumoto, A. Ozao, *Y. Homma
  • Organizer: 2013 JSAP-MRS Joint Symposia
  • Place of Presentation: Doshisha University, Kyoto, Japan
  • Year and Date: 20130916-20130920
• [Presentation] RBM of Single-Walled Carbon Nanotubes in Water Vapor (2013)
  • Author(s): N. Homma, S. Sato, S. Chiashi, Y. Homma, T. Yamamoto
  • Organizer: 2013 JSAP-MRS Joint Symposia
  • Place of Presentation: Doshisha University, Kyoto, Japan
  • Year and Date: 20130916-20130920
• [Presentation] Self-Assembled Micro-Honeycomb Network of Single-Walled Carbon Nanotubes for Heterojunction Solar Cells (2013)
  • Author(s): S. Maruyama, K. Cui, E. Einarsson, S. Chiashi
  • Organizer: ChinaNano2013
  • Place of Presentation: Beijing, China
  • Year and Date: 20130905-20130907
  • Invited
• [Presentation] Self-Organized Micro-Honeycomb Network Structure of Single-Walled Carbon Nanotubes for Photovoltaic Devices (2013)
  • Author(s): S. Maruyama, K. Cui, T. Chiba, E. Einarsson, S. Chiashi
  • Organizer: ASME 2013 Heat Transfer Conference
  • Place of Presentation: Minneapolis, MN, USA
  • Year and Date: 20130714-20130719
  • Invited
• [Presentation] Self-assembled micro-honeycomb network of single-walled carbon nanotubes for heterojunction solar cell (2013)
  • Author(s): S. Maruyama, K. Cui, T. Chiba, E. Einarsson, S. Chiashi,
  • Organizer: 1st Carbon Nanotube Thin Film Applicaions Symposium
  • Place of Presentation: Tallink Conference and Spa Hotel, Tallinn, Estonia
  • Year and Date: 20130629-20130629
  • Invited
• [Presentation] Structured SWNTs and Graphene for Photovoltaic devices (2013)
  • Author(s): K. Cui, T. Chiba, T. Thurakitseree, X. Chen, H. Kinoshita, P. Zhao, T. Inoue, E. Einarsson, S. Chiashi, *S. Maruyama
  • Organizer: the 5th International Workshop on Nanotube Optics and Nanospectroscopy
  • Place of Presentation: Santa Fe, New Mexico, USA
  • Year and Date: 20130616-20130620
  • Invited
• [Presentation] Micro-Honeycomb Network Structure of Single-Walled Carbon Nanotubes for Heterojunction Solar Cel (2013)
  • Author(s): K. Cui, T. Chiba, H. Kinoshita, P. Zhao, T. Thurakitseree, T. Inoue, E. Einarsson, S. Chiashi, *S. Maruyama
  • Organizer: 223rd ECS Meeting
  • Place of Presentation: Toront, Ontario, Canada
  • Year and Date: 20130512-20130516
• [Presentation] A molecular dynamics simulation of SWNT growth by CVD method -Octopus and VLS modes - (2013)
  • Author(s): S. Maruyama, T. kawasuzuki, K. Hisama, T. Noguchi, T. Thurakitseree, E. Einarsson, S. Chiashi,
  • Organizer: 6th Guadalupe Workshop
  • Place of Presentation: San Antonio, Texas, USA
  • Year and Date: 20130412-20130416
• [Book] ナノ・マイクロスケール機械工学 (2014)
  • Author(s): 千足 昇平
  • Total Pages: 261
  • Publisher: 東京大学出版