2005 Fiscal Year Final Research Report Summary
Fundamental Study of Low-Loss X-ray Waveguides and High-Efficiency X-ray Functional Devices for Nanometer Electromagnetic Waves
| Project/Area Number |
15360188
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
GOTO Nobuo Toyohashi University of Technology, Department of Information and Computer Sciences, Associate Professor, 工学部, 助教授 (60170461)
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| Co-Investigator(Kenkyū-buntansha) |
MIYAZAKI Yasumitsu Aichi University of Technology, Department of Electronics and Information Engineering, Professor, 工学部, 教授 (00023169)
TAKAHASHI Koichi Aichi University of Technology, Department of Electronics and Information Engineering, Lecturer, 工学部, 講師 (10335101)
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| Project Period (FY) |
2003 – 2005
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| Keywords | X-ray fiber / X-ray functional device / Photonic crystal waveguide / Nanometer electromagnetic wave / Bandgap |
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| Research Abstract |
We have studied on low-loss waveguide and high-efficiency functional devices for nanometer-wave. The results on theoretical study and experimental preparation are as follows:
1. Theoretical study of photonic crystal waveguides made of carbon and molybdenum atoms.
To evaluate reflection characteristics in crystal waveguides of carbon and molybdenum, bandgap and dispersion characteristics as the photonic crystal were theoretically investigated using plane-wave expansion method. It was found that there exist bandgaps locally with the width of an order of THz. The possibility of photonic crystal waveguide in the range of nanometer wave was shown.
2. Theoretical study of focusing waveguide lens having curved Interfaces
Electromagnetic characteristics in a focusing waveguide lens device have been investigated to realize X-ray waveguiding. In particular, the transmission characteristics were clarified as a boundary value problem at the boundary curvature of the focusing graded-index waveguide for
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spatial beam waves. Based on this theoretical result, low-loss X-ray beam waveguide systems can be designed.
3. Preparation of apparatus for single-layer carbon nano-tubes synthesis
We have prepared an apparatus to synthesize carbon nano-tubes by laser evaporation method. The apparatus consists of a ceramic electric furnace and a YAG pulse laser. Fundamental experiment for the synthesis was performed.
4. Preparation of precise manufacturing and patterning system
To growth carbon nano-tubes selectively on substrates, precise manufacturing and patterning system controlled by a personal computer has been prepared.
5. FDTD analysis of scattering and transmission characteristics in X-ray waveguides
To investigate guiding characteristics in X-ray waveguides consisting of crystal materials, X-ray beam propagation was analyzed with finite-difference time-domain (FDTD) method.
6. Study of parallel computation method for large-scale computation
To analyze propagation, scattering and absorption characteristics of X-ray with FDTD method, parallel algorithm and successive analysis in segmented regions are investigated.
7. Experimental study of scatterinu and transmission in soft X-ray
Experimental setup with soft X-ray source and X-ray camera was prepared to measure scattering and transmission characteristics in medium.
Although further investigation is required to clarify guiding characteristics of low-loss waveguides for nanometer waves, the study can be developed for realizing waveguides and functional devices based on these results. Less
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