2007 Fiscal Year Final Research Report Summary
Multiscale Design of Nanostructured Ceramics for High-frequency Electromagnetic Applications
| Project/Area Number |
17560597
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | Okayama University |
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Principal Investigator |
TSURUTA Kenji Okayama University, Graduate School of Natural Science&Technology, Associate Professor (00304329)
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| Co-Investigator(Kenkyū-buntansha) |
TOTSUJI Chieko Okayama University, Graduate School of Natural Science&Technology, Assistant Professor (20253007)
TOTSUJI Hiroo Okayama University, Graduate School of Natural Science&Technology, Professor (40011671)
KISHIMOTO Akira Okayama University, Graduate School of Natural Science&Technology, Professor (30211874)
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| Project Period (FY) |
2005 – 2007
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| Keywords | nano-materials / ceramics / semiconductors / surfaces / interfaces / low-dimensional electronic systems / multiscale simulations / molecular dynamics |
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| Research Abstract |
In this research, we have developed novel and highly accurate simulation methodologies for nanostructured materials that are used in ultra high-speed mass communication devices. We have applied the methods to clarify the effects of defects, grain boundaries, and impurities on electronic and magnetic properties of nanostructured ceramics and semiconductors.
During the research term, we have obtained the following outcomes:
1. The electronic transportation coefficient in Si nanowires has been calculated via the time-dependent Schrodinger equation based on the tight-binding approximation;
2. The diffusion processes of the impurity hydrogen in a Si crystal and grain boundary were analyzed by hybrid quantum/classics molecular dynamics method. We have found possible mechanism of the sudden drop of activation energy of H atom around and above 1000K due to the interactions between the defects and the impurity.
3. We have found the possibility that the residual magnetization of diamond is locally generated when Ni impurities were inserted at interstitial sites.
4. The spin polarizability in low-dimensional electron system was evaluated through the correlations between electrons trapped in low-dimensional system by the classics map method.
5. The structural and normal-mode analyses were performed to investigate the relationship between melting processes and the vibrational modes.
6. The finite-difference time-domain (FDTD) simulation methodologies for electromagnetic responses of meta-materials were developed and applied to the metal-insulator multilayer structures.
We have presented these results in a lot of domestic societies meetings and in four invited lectures.
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Research Products
(102 results)
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[Journal Article] Spin Polarization of Two-Dimensional Electron System in a Finite Domain2008
Author(s)
T., Miyake, C., Totsuji, K., Nakanishi, K., Tsuruta, H., Totsuji
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Journal Title
Memoirs of the Faculty of Engineering, Okayama University Vol. 42
Pages: 56-59
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Strategic Application of Asia-Pacific GRID for Ultrascale Materials Simulations2005
Author(s)
A., Nakano, R.K., Kalia, P., Vashishta, S., Ogata, T., Sekiguchi, Y., Tanaka, K., Tsuruta
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Journal Title
Journal of the Japan Society for Mechanical Engineers vol. 108
Pages: 815-817
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Large-scale FDTD Simulations on Optical and Acoustic Metamaterials2007
Author(s)
Kenji, Tsuruta, Ryosuke, Umeda, Tomoyuki, Kurose, Chieko, Totsuji, Hiroo, Totsuji
Organizer
APCOM'07-EPMESC XI, Third Asian-Pacific Congress on Computational Mechanics in conjunction with Eleventh International Conference on the Enhancement and Promotion of Computational Methods in Engineering and Science, Session MS9-3 Ultrascale Hierarchical Simulations on High-End Parallel and Distributed Computers, MS9-3-2, Kyoto International Conference Center
Place of Presentation
Kyoto, Japan
Year and Date
2007-12-03
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Large-scale TBMD Simulations for Fracture in Nanowire/Amorphous SiC Nanocomposite2007
Author(s)
K., Tsuruta, D., Srivastava, M., Djomehri, M., Makeev, C., Totsuji, H., Totsuji
Organizer
2007 Fall Meeting of Japan Institute of Metals
Place of Presentation
Gifu Univ. (Gifu)
Year and Date
2007-09-20
Description
「研究成果報告書概要(欧文)」より
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[Presentation] 「研究成果報告書概要(欧文)」より2007
Author(s)
Ryosuke, Umeda, Chieko, Totsuji, Kenji, Tsuruta, Hiroo, Totsuji
Organizer
FDTD Simulation for Electromagnetic Properties in Dispersive DNG Media : Image Refocusing, Annual Meeting of Physical Society of Japan, Chugoku-Shikoku Branch
Place of Presentation
Okayama Univ. (Okayama)
Year and Date
2007-08-04
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[Presentation] Large-scale TBMD Simulations of Nanowire/Amorphous SiC Nanocomposite2007
Author(s)
K., Tsuruta, D., Srivastava, M., Djomehri, M., Makeev, C., Totsuji, H., Totsuji
Organizer
2007 Spring Meeting of Japan Institute of Metals
Place of Presentation
Chiba Institute of Technology (Tsudanuma)
Year and Date
2007-03-28
Description
「研究成果報告書概要(欧文)」より
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[Presentation] 2次元有限領域の電子液体の分布2005
Author(s)
三宅隆, 東辻千枝子, 鶴田健二, 東辻浩夫
Organizer
第7回IEEE広島学生シンポジウム(HISS)
Place of Presentation
岡山大学
Year and Date
2005-11-26
Description
「研究成果報告書概要(和文)」より
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