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Fundamental Study of Low-Loss X-ray Waveguides and High-Efficiency X-ray Functional Devices for Nanometer Electromagnetic Waves

纳米电磁波低损耗X射线波导和高效X射线功能器件的基础研究

基本信息

批准号：
15360188
负责人：
GOTO Nobuo
金额：
$ 4.86万
依托单位：
Toyohashi University of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

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 InterfacesElectromagnetic 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 … More 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 synthesisWe 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 systemTo 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 waveguidesTo 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 computationTo 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-rayExperimental 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

我们研究了用于纳米波的低损耗波导和高效率功能器件。1.碳、钼原子光子晶体光波导的理论研究为了评价碳、钼原子晶体光波导的反射特性，采用平面波展开法，从理论上研究了碳、钼原子光子晶体光波导的带隙和色散特性。发现局域存在宽度为太赫兹量级的带隙。说明了在纳米波长范围内制作光子晶体光波导的可能性。具有弯曲界面的聚焦波导透镜的理论研究为实现X射线波导，研究了聚焦波导透镜装置中的电磁特性。特别地，将…的传输特性归结为聚焦梯度折射率光波导边界曲率处的边值问题更多的空间波束。基于这一理论结果，可以设计出低损耗的X射线束波导系统。单层碳纳米管合成装置的研制我们研制了一种激光蒸发法制备碳纳米管的装置。该装置由陶瓷电炉和脉冲激光器组成。进行了合成的基础实验。精密制造和图案化系统的制备为了在衬底上选择性地生长碳纳米管，已经制备了由个人计算机控制的精密制造和图案化系统。X射线光波导中散射和传输特性的FDTD分析为了研究晶体材料组成的X射线光波导中的导波特性，采用了时域有限差分(FDTD)方法分析了X射线光束的传输特性。面向大规模计算的并行计算方法研究为了用FDTD方法分析X射线的传播、散射和吸收特性，研究了分段区域的并行算法和逐次分析方法。软X射线散射和传输的实验研究利用软X射线源和X射线相机建立了测量介质中的散射和传输特性的实验装置。虽然还需要进一步的研究来阐明低损耗波导对纳米波的导波特性，但基于这些结果，这一研究可以为实现光波导和功能器件奠定基础。较少