計算科学に基づく新奇原子層物質複合系の物性解明と物質設計

• Project Area: Science of Atomic Layer Systems
• Project/Area Number: 26107509
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: University of Tsukuba
• Principal Investigator: 岡田 晋 筑波大学, 数理物質系, 教授 (70302388)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000); Fiscal Year 2015: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2014: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
• Keywords: 原子層物質 / グラフェン / ナノカーボン

Outline of Annual Research Achievements

本研究では、量子論に立脚した計算物質科学の手法を用いて、各種原子層物質ならびに原子層物質と異種物質とからなる複合系の基礎物性の解明を行い、そこで得られた知見を基盤として、各種産業応用に資する原子層物質とデバイス構造の探索をおこなった。
本年度は、グラフェンの実デバイス応用において本質となる、グラフェンの微細加工技術基盤の構築のため、グラフェン端のエネルギー安定性と電子物性の端形状依存性の解明をおこなった。その結果、グラフェンはアームチェアと呼ばれる端形状をエネルギー的に選択的に好み、アームチェ形状に近い端形上の下ではそのエネルギー安定性はあまり端形状に依存しないことを明らかにした。一方、ジグザク型の端形状をを有する端はエネルギー的に不安定であり、ジグザグ形状を多く有する端では、エネルギー安定性が端の形状に強く依存することが明らかになった。また電界を印加することによりジグザグ型の端形状が安定化されることも明らかにし、電界による端形状制御の可能性をあきらかにした。
六方晶窒化ホウ素(h-BN)中に埋め込まれたグラフェン断片の磁気的特性の解明をおこない、埋め込まれたグラフェン断片が、その形状、ヘテロ界面（線）を構成する原子種に依存して多様なスピン分極状態を取ることを明らかにした。さらに、グラフェンドメイン間の分極スピン相互作用がシングレット的に作用すること、その有効距離が概ね1nmであることを明らかにし、h-BNとグラフェンからなるヘテロ構造の応用可能性を提示した。
２層グラフェンのデバイス応用について、我々は、片面に欠陥を有する２層グラフェンに着目し、その電子構造計算を行い、片面が完全な蜂の巣ネットワークを保持しているにもかかわらず、層間相互作用により２層グラフェンが半導体化することを明らかにし、半導体化グラフェン実現んの新たな方策を提示した。

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] Influence of the Defects on the Electronic Structures of Bilayer Graphene (2016)
  • Author(s): Ken Kishimoto and Susumu Okada
  • Journal Title: Surface Science Volume: 644 Pages: 18-23
  • DOI: 10.1016/j.susc.2015.08.036
  • NAID: 120007129844
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] `Energetics and electronic structures of graphene nanoribbons under a lateral electric field (2016)
  • Author(s): Ayaka Yamanaka and Susumu Okada
  • Journal Title: Carbon Volume: 96 Pages: 351-361
  • DOI: 10.1016/j.carbon.2015.09.054
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Magnetic Properties of Graphene Quantum Dots Embedded in h-BN Sheet (2016)
  • Author(s): Mina Maruyama and Susumu Okada
  • Journal Title: The Journal of Physical Chemistry C Volume: 120 Issue: 2 Pages: 1293-1302
  • DOI: 10.1021/acs.jpcc.5b09882
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Influence of electric field on electronic states of graphene nanoribbons under a FET structure (2016)
  • Author(s): Ayaka Yamanaka and Susumu Okada
  • Journal Title: Japanese Journal of Applied Physics Volume: 55 Issue: 3 Pages: 035101-035101
  • DOI: 10.7567/jjap.55.035101
  • NAID: 120007129636
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Gate-tunable Dirac point of molecular doped graphene (2016)
  • Author(s): P. Solís Fernández, S. Okada, T. Sato, M. Tsuji, H. Ago
  • Journal Title: ACS Nano Volume: 10 Issue: 2 Pages: 2930-2939
  • DOI: 10.1021/acsnano.6b00064
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Geometric and Electronic Structures of Polymerized C32 Fullerenes: Electronic Structure Tuning by Fullerene and Carbon Nanotube Filling (2015)
  • Author(s): Mina Maruyama and Susumu Okada
  • Journal Title: Japanese Journal of Applied Physics Volume: 54 Issue: 6S1 Pages: 06FF02-06FF02
  • DOI: 10.7567/jjap.54.06ff02
  • NAID: 210000145226
  • Peer Reviewed
• [Journal Article] Threshold voltage variation for charge accumulation in carbon nanotube owing to monatomic defect arrangement (2015)
  • Author(s): U Ishiyama, Nguyen Thanh Cuong, and Susumu Okada
  • Journal Title: Japanese Journal of Applied Physics Volume: 54 Issue: 6S1 Pages: 06FF04-06FF04
  • DOI: 10.7567/jjap.54.06ff04
  • NAID: 210000145228
  • Peer Reviewed
• [Journal Article] Electronic structures of Decamethyl C60 under an Electric Field (2015)
  • Author(s): Kohei Narita and Susumu Okada
  • Journal Title: Japanese Journal of Applied Physics Volume: 54 Issue: 6S1 Pages: 06FF09-06FF09
  • DOI: 10.7567/jjap.54.06ff09
  • Peer Reviewed
• [Journal Article] Nano-Saturn: Energetics of the Inclusion Process of C60 into Cyclohexabiphenylene (2015)
  • Author(s): Shota Kigure, Haruka Omachi, Hisanori Shinohara, Susumu Okada
  • Journal Title: J. Phys. Chem. C Volume: 119 Issue: 16 Pages: 8931-8936
  • DOI: 10.1021/acs.jpcc.5b00449
  • Peer Reviewed
• [Journal Article] Influence of Defects for Carrier Injection In Carbon Nanotubes (2015)
  • Author(s): U Ishiyama, Nguyen Thanh Cuong, and Susumu Okada
  • Journal Title: Japanese Journal of Applied Physics Volume: 54 Issue: 6 Pages: 065101-065101
  • DOI: 10.7567/jjap.54.065101
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Radical Spin Interaction in One-dimensional Chain of Decamethyl C60 (2015)
  • Author(s): Kohei Narita and Susumu Okada
  • Journal Title: Chemical Physics Letters Volume: 634 Pages: 129-133
  • DOI: 10.1016/j.cplett.2015.05.075
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Geometric and electronic structures of two-dimensional networks of fused C_{36} fullerenes (2015)
  • Author(s): Mina Maruyama, Nguyen Thanh Cuong, and Susumu Okada
  • Journal Title: Journal of the Physical Society of Japan Volume: 84 Issue: 8 Pages: 084706-084706
  • DOI: 10.7566/jpsj.84.084706
  • Peer Reviewed
• [Journal Article] Dispersion of CNT in Organic Solvent by Commercial Polymers with Ethylene Chains: Experimental and Theoretical Studies (2015)
  • Author(s): Masahiro Shigeta, Katsumasa Kamiya, Mitsugu Uejima, Susumu Okada
  • Journal Title: Japanese J. Appl. Phys. Volume: 54 Issue: 3 Pages: 035101-035101
  • DOI: 10.7567/jjap.54.035101
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Electronic Transport Properties of Graphene Channel between Au Electrodes (2015)
  • Author(s): Hideyuki Jippo, Mari Ohfuchi, and Susumu Okada
  • Journal Title: e-Journal of Surface Science and Nanotechnology Volume: 13 Issue: 0 Pages: 54-58
  • DOI: 10.1380/ejssnt.2015.54
  • NAID: 130004933835
  • ISSN: 1348-0391
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Nano-Saturn: Theoretical Design of New C60 Inclusion Compounds (2015)
  • Author(s): S. Kigure and S. Okada
  • Journal Title: Jpn. J. Appl. Phys. Volume: 54 Issue: 6S1 Pages: 06FF01-06FF01
  • DOI: 10.7567/jjap.54.06ff01
  • NAID: 210000145225
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Energetics and electronic structures of polymerized cyclobutadiene (2014)
  • Author(s): Mina Maruyama, Kyoko Nakada, and Susumu Okada
  • Journal Title: Japanese J. Appl. Phys. Volume: 53 Issue: 3 Pages: 035103-035103
  • DOI: 10.7567/jjap.53.035103
  • NAID: 210000143435
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Electrostatic modulation of electron-states in MoS2: First-principles Calculations (2014)
  • Author(s): Nguyen Thanh Cuong, Minoru Otani, and Susumu Okada
  • Journal Title: Journal of Physics: Condensed Matter Volume: 26 Issue: 13 Pages: 135001-135001
  • DOI: 10.1088/0953-8984/26/13/135001
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Flexible metallic nanowires with self-adaptive Ohmic contact to semiconducting transition-metal dichalcogenide monolayers (2014)
  • Author(s): Junhao Lin, Ovidiu Cretu, Wu Zhou, Kazu Suenaga, Dhiraj Prasai, Kirill I. Bolotin, Nguyen Thanh Cuong, Minoru Otani, Susumu Okada, Andrew R. Lupini, Juan-Carlos Idrobo, Dave Caudel, Arnold Burger, Nirmal J. Ghimire, Jiaqiang Yan, David G. Mandrus, Stephen J. Pennycook, Sokrates T. Pantelides
  • Journal Title: Nature Nanotechnology Volume: 9 Issue: 6 Pages: 436-442
  • DOI: 10.1038/nnano.2014.81
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Two-dimensional sp2 Carbon Networks of Fused Pentagons (2014)
  • Author(s): Mina Maruyama and Susumu Okada
  • Journal Title: Japanese J. Appl. Phys. Volume: 53 Issue: 6S Pages: 06JD02-06JD02
  • DOI: 10.7567/jjap.53.06jd02
  • NAID: 210000144078
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Structural Dependence of Electronic Properties of Graphene Nanoribbons on an Electric Field (2014)
  • Author(s): Ayaka Yamanaka and Susumu Okada
  • Journal Title: Japanese J. Appl. Phys. Volume: 53 Issue: 6S Pages: 06JD05-06JD05
  • DOI: 10.7567/jjap.53.06jd05
  • NAID: 210000144081
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Energetics and Electronic Structures of C60 Included in [n]Cyclacene Molecules: Dynamical and Electronic Properties of C60 (2014)
  • Author(s): Shota Kigure and Susumu Okada
  • Journal Title: Japanese J. Appl. Phys. Volume: 53 Issue: 6S Pages: 06JD06-06JD06
  • DOI: 10.7567/jjap.53.06jd06
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] An anomalous dipole-dipole arrangement of water molecules encapsulated into C60 dimer (2014)
  • Author(s): K. Nomura and S. Okada
  • Journal Title: Chemical Physics Letters Volume: 608 Pages: 351-354
  • DOI: 10.1016/j.cplett.2014.06.013
  • NAID: 120007136635
  • Peer Reviewed / Open Access
• [Journal Article] Spin-state tuning of decamethyl C60 by an external electric field (2014)
  • Author(s): Kohei Narita and Susumu Okada
  • Journal Title: Chem. Phys. Lett. Volume: 614 Pages: 10-14
  • DOI: 10.1016/j.cplett.2014.08.063
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Coulomb Interaction Effects on Optical Properties of Monolayer Transition Metal Dichalcogenides (2014)
  • Author(s): Satoru Konabe and Susumu Okada
  • Journal Title: Phys. Rev. B Volume: 90 Issue: 15 Pages: 155304-155304
  • DOI: 10.1103/physrevb.90.155304
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Electronic structures of carbon nanotubes with monovacancy under an electric field (2014)
  • Author(s): U Ishiyama, Nguyen Thanh Cuong, and Susumu Okada
  • Journal Title: Japanese J. Appl. Phys. Volume: 53 Issue: 11 Pages: 115102-115102
  • DOI: 10.7567/jjap.53.115102
  • NAID: 210000144580
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Electronic and Geometric Structures of Carbon Nanotubes Encapsulating Polycyclic Aromatic Hydrocarbon Molecules (2014)
  • Author(s): Shota Kigure, Yoko Iizumi, Toshiya Okazaki, and Susumu Okada
  • Journal Title: J. Phys. Soc. Japan Volume: 83 Issue: 12 Pages: 124709-124709
  • DOI: 10.7566/jpsj.83.124709
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Electron injection into nearly free electron states of graphene nanoribbons under a lateral electric field (2014)
  • Author(s): A. Yamanaka and S. Okada
  • Journal Title: Appl. Phys. Express Volume: 7 Pages: 125103-125103
  • NAID: 210000137338
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Nanoporous Carbon Tubes from Fullerene Crystals as the pi-Electron Carbon Source (2014)
  • Author(s): Lok Kumar Shrestha, Rekha Goswami Shrestha, Yusuke Yamauchi, Jonathan P. Hill, Toshiyuki Nishimura, Kun'ichi Miyazawa, Katsunori Wakabayashi, Takazumi Kawai, Susumu Okada, and Katsuhiko Ariga
  • Journal Title: Angewandte Chemie International Edition Volume: 53 Issue: 3 Pages: 951-955
  • DOI: 10.1002/anie.201408856
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Structural dependence of electronic properties of graphene nanoribbons on an electric field (2015)
  • Author(s): A. Yamanaka and S. Okada
  • Organizer: 2015 International Chemical Congress of Pacific Basin Society
  • Place of Presentation: Honolulu (USA)
  • Year and Date: 2015-12-15
  • Int'l Joint Research
• [Presentation] Radical spin interaction of graphene flake embedded into h-BN sheet (2015)
  • Author(s): M. Maruyama and S. Okada
  • Organizer: 2015 International Chemical Congress of Pacific Basin Society
  • Place of Presentation: Honolulu (USA)
  • Year and Date: 2015-12-15
  • Int'l Joint Research
• [Presentation] Gate voltage variation for carrier accumulation by the defects in carbon nanotubes (2015)
  • Author(s): U Ishiyama and S. Okada
  • Organizer: 2015 International Chemical Congress of Pacific Basin Society
  • Place of Presentation: Honolulu (USA)
  • Year and Date: 2015-12-15
  • Int'l Joint Research
• [Presentation] Geometric and energetics structures of corannulene polymers (2015)
  • Author(s): K. Narita and S. Okada
  • Organizer: 2015 International Chemical Congress of Pacific Basin Society
  • Place of Presentation: Honolulu (USA)
  • Year and Date: 2015-12-15
  • Int'l Joint Research
• [Presentation] Electronic Properties of CNT Thin Films under an Electric Field (2015)
  • Author(s): U Ishiyama and S. Okada
  • Organizer: 28th International Microprocesses and Nanotechnology Conference
  • Place of Presentation: 富山国際会議場（富山県富山市）
  • Year and Date: 2015-11-10
  • Int'l Joint Research
• [Presentation] Geometric and Electronic Structures of One-Dimensionally Polymerized Coronene Molecules (2015)
  • Author(s): K. Narita and S. Okada
  • Organizer: 28th International Microprocesses and Nanotechnology Conference
  • Place of Presentation: 富山国際会議場（富山県富山市）
  • Year and Date: 2015-11-10
  • Int'l Joint Research
• [Presentation] Design of Novel Elemental Semiconductors: Two- Dimensional Covalent Networks of Fused C 36 Fullerenes (2015)
  • Author(s): M. Maruyama, N.T. Cuong, and S. Okada
  • Organizer: 28th International Microprocesses and Nanotechnology Conference
  • Place of Presentation: Toyama
  • Year and Date: 2015-11-10
  • Int'l Joint Research
• [Presentation] Electron-State Tuning of Bilayer Graphene by Defects (2015)
  • Author(s): K. Kishimoto and S. Okada
  • Organizer: 28th International Microprocesses and Nanotechnology Conference
  • Place of Presentation: 富山国際会議場（富山県富山市）
  • Year and Date: 2015-11-10
  • Int'l Joint Research
• [Presentation] Electric Field Screening of Fullerene Cages: Energetics of a Water Molecule Encapsulated in Fullerenes (2015)
  • Author(s): J. Sorimachi and S. Okada
  • Organizer: 28th International Microprocesses and Nanotechnology Conference
  • Place of Presentation: 富山国際会議場（富山県富山市）
  • Year and Date: 2015-11-10
  • Int'l Joint Research
• [Presentation] Thermoelectric Properties of CVD-Grown Transition Metal Dichalcogenide Monolayers (2015)
  • Author(s): K. Kanahashi, J. Pu, N.T. Cuoug , L.-J. Li , S. Okada, H. Ohta, and T. Takenobu
  • Organizer: 28th International Microprocesses and Nanotechnology Conference
  • Place of Presentation: 富山国際会議場（富山県富山市）
  • Year and Date: 2015-11-10
  • Int'l Joint Research
• [Presentation] Influence of Deformations of Carbon Nanotubes on Carrier Accumulation under an Electric Field (2015)
  • Author(s): A. Hasegawa and S. Okada
  • Organizer: 28th International Microprocesses and Nanotechnology Conference
  • Place of Presentation: 富山国際会議場（富山県富山市）
  • Year and Date: 2015-11-10
  • Int'l Joint Research
• [Presentation] Influence of Local Electric Field on Electronic States of Graphene Nanoribbons (2015)
  • Author(s): A. Yamanaka and S. Okada
  • Organizer: International Conference on Solid State Devices and Materials
  • Place of Presentation: 札幌コンベンションセンター（北海道札幌市）
  • Year and Date: 2015-09-27
  • Int'l Joint Research
• [Presentation] Bandgap Engineering of Graphene by Mean of Adsorption of Defective Graphene (2015)
  • Author(s): K. Kishimoto and S. Okada
  • Organizer: International Conference on Solid State Devices and Materials
  • Place of Presentation: 札幌コンベンションセンター（北海道札幌市）
  • Year and Date: 2015-09-27
  • Int'l Joint Research
• [Presentation] Radical Spin Interaction of Graphene Flakes Embedded into h-BN Sheet (2015)
  • Author(s): M. Maruyama and S. Okada
  • Organizer: International Conference on Solid State Devices and Materials
  • Place of Presentation: 札幌コンベンションセンター（北海道札幌市）
  • Year and Date: 2015-09-27
  • Int'l Joint Research
• [Presentation] Competition and Cooperation between External and Internal Electric Fields for Carrier Injection in Carbon Nanotubes with Defects (2015)
  • Author(s): U Ishiyama, N.T. Cuong, and S. Okada
  • Organizer: International Conference on Solid State Devices and Materials
  • Place of Presentation: 札幌コンベンションセンター（北海道札幌市）
  • Year and Date: 2015-09-27
  • Int'l Joint Research
• [Presentation] Energetics of H2O Encapsulated in Fullerenes under an Electric Field (2015)
  • Author(s): J. Sorimachi and S. Okada
  • Organizer: International Conference on Solid State Devices and Materials
  • Place of Presentation: 札幌コンベンションセンター（北海道札幌市）
  • Year and Date: 2015-09-27
  • Int'l Joint Research
• [Presentation] Competition and Cooperation between External and Internal Electric Fields for Carrier Injection In Carbon Nanotubes with Defects (2015)
  • Author(s): U Ishiyama and S. Okada
  • Organizer: 28th International Conference on Defects in Semiconductors
  • Place of Presentation: Espo (Finland)
  • Year and Date: 2015-07-27
  • Int'l Joint Research
• [Presentation] Magnetic properties of graphene flakes embedded in h-BN sheet (2015)
  • Author(s): M. Maruyama and S. Okada
  • Organizer: 28th International Conference on Defects in Semiconductors
  • Place of Presentation: Espo (Finland)
  • Year and Date: 2015-07-27
  • Int'l Joint Research
• [Presentation] Geometric and Electronic Structures of Graphene Nanoribbon with Topological Defects: Corannulene Polymers (2015)
  • Author(s): K. Narita and S. Okada
  • Organizer: 28th International Conference on Defects in Semiconductors
  • Place of Presentation: Espo (Finland)
  • Year and Date: 2015-07-27
  • Int'l Joint Research
• [Presentation] Energetics and Electronic Structure of Graphene Edges (2015)
  • Author(s): A. Yamanaka and S. Okada
  • Organizer: 28th International Conference on Defects in Semiconductors
  • Place of Presentation: Espo (Finland)
  • Year and Date: 2015-07-27
  • Int'l Joint Research
• [Presentation] Geometric and electronic structures of two-dimensional networks of fused C36 fullerenes (2015)
  • Author(s): Mina Maruyama and Susumu Okada
  • Organizer: 16th International Conference on the Science and Application of Nanotubes (NT15)
  • Place of Presentation: 名古屋大学（愛知県名古屋市）
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] Energetics and electronic structures of nano-Saturn: Novel inclusion compounds consisting of C$_{60}$ and cyclohexabiphenylene (2015)
  • Author(s): Susumu Okada, Shota Kigure, Haruka Omachi, and Hisanori Shinohara
  • Organizer: 16th International Conference on the Science and Application of Nanotubes (NT15)
  • Place of Presentation: 名古屋大学（愛知県名古屋市）
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] Energetics and electronic structure of graphene nanoribbons (2015)
  • Author(s): Ayaka Yamanaka and Susumu Okada
  • Organizer: 16th International Conference on the Science and Application of Nanotubes (NT15)
  • Place of Presentation: 名古屋大学（愛知県名古屋市）
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] Magnetic properties of decamethyl C60 chain (2015)
  • Author(s): Kohei Narita and Susumu Okada
  • Organizer: 16th International Conference on the Science and Application of Nanotubes (NT15)
  • Place of Presentation: 名古屋大学（愛知県名古屋市）
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] Competition and cooperation between external and internal electric fields for carrier injection in carbon nanotubes with defects (2015)
  • Author(s): U Ishiyama and Susumu Okada
  • Organizer: 16th International Conference on the Science and Application of Nanotubes (NT15)
  • Place of Presentation: 名古屋大学（愛知県名古屋市）
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] Electronic structure of carbon nanotubes on GaN-(0001) surface (2015)
  • Author(s): Tomoe Yayama, Susumu Okada, Tomohiro Chikyow
  • Organizer: 16th International Conference on the Science and Application of Nanotubes (NT15)
  • Place of Presentation: 名古屋大学（愛知県名古屋市）
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] Geometric and electronic structures of nanocarbon hybrid materials (2015)
  • Author(s): Susumu Okada
  • Organizer: CCTN15: Tenth International Symposium on Computational Challenges and Tools for Nanotubes
  • Place of Presentation: 名古屋大学（愛知県名古屋市）
  • Year and Date: 2015-06-28
  • Int'l Joint Research / Invited
• [Presentation] Magnetic properties of carbon flakes embedded in h-BN sheet (2015)
  • Author(s): Mina Maruyama and Susumu Okada
  • Organizer: 18th International Symposium on Intercalation Compounds (ISIC-18)
  • Place of Presentation: Strasbourg (France)
  • Year and Date: 2015-05-31
  • Int'l Joint Research
• [Presentation] Electronic structure and energetics of graphene nanoribbons under an external electric field (2015)
  • Author(s): Ayaka Yamanaka and Susumu Okada
  • Organizer: 18th International Symposium on Intercalation Compounds (ISIC-18)
  • Place of Presentation: Strasbourg (France)
  • Year and Date: 2015-05-31
  • Int'l Joint Research
• [Presentation] Threshold Voltage Variation for Charge Accumulation in CNT Due to the Monatomic Defect Arrangement (2014)
  • Author(s): U Ishiyama and Susumu Okada
  • Organizer: MNC2014, 27th International Microprocesses and Nanotechnology Conference
  • Place of Presentation: ヒルトン福岡シーホーク(福岡)
  • Year and Date: 2014-11-05 – 2014-11-07
• [Presentation] Spin-State Tuning of Decamethyl C60 by an Electric Field (2014)
  • Author(s): Kohei Narita and Susumu Okada
  • Organizer: MNC2014, 27th International Microprocesses and Nanotechnology Conference
  • Place of Presentation: ヒルトン福岡シーホーク(福岡)
  • Year and Date: 2014-11-05 – 2014-11-07
• [Presentation] `Electronic Properties of Graphene under an Electric Field (2014)
  • Author(s): Ayaka Yamanaka and Susumu Okada
  • Organizer: International Conference of Synthetic Metals
  • Place of Presentation: Turku, Finland
  • Year and Date: 2014-06-30 – 2014-07-05
• [Presentation] Two-dimensional sp2 carbon network consisting of fused pentagon2 (2014)
  • Author(s): Mina Maruyama and Susumu Okada
  • Organizer: International Conference of Synthetic Metals
  • Place of Presentation: Turku, Finland
  • Year and Date: 2014-06-30 – 2014-07-05
• [Presentation] Energetics and Electronic Structures of CNT Encapsulating PAH Molecules (2014)
  • Author(s): Shota Kigure and Susumu Okada
  • Organizer: International Conference of Synthetic Metals
  • Place of Presentation: Turku, Finland
  • Year and Date: 2014-06-30 – 2014-07-05
• [Patent(Industrial Property Rights)] 光電変換素子、太陽電池及び光センサー (2014)
  • Inventor(s): 小鍋哲,岡田晋
  • Industrial Property Rights Holder: 国立大学法人筑波大学
  • Industrial Property Rights Type: 特許
  • Filing Date: 2014-09-09