Development of Functional Scanning Near-field Optical Microscope and Their Nano-scale Spectroscopy of Fine-particle Crystals

功能扫描近场光学显微镜及其细颗粒晶体纳米级光谱学的发展

基本信息

批准号：
11554012
负责人：
ITOH Tadashi
金额：
$ 8.96万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11554012/
关键词：
scannin near-field optical microscope (SNOM)fine-particle array crystal photonic band nano-scale spectroscopy image resolution of SNOM non-light control of probe low-temperature SNOM nano-scale processing of light 共鳴効果表面における分子移動近接場光

项目摘要

Nano-scale spectroscopy of scanning near-field optical microscope (SNOM) and its high-functionality have been investigated as follows.1. Near-field effects on polystyrene fine-particle array crystals.(1) SNOM transmission images were reversed as the wavelength of light crossed the photonic-band resonance of the crystal. The patterns were reproduced by calculation.(2) The SNOM patterns resembled both for illumination and collection modes since the probe mainly picked up the polarization component parallel to the layer.(3) The SNOM patterns varied drastically depending on the particle radius, aperture size of SNOM probe and wavelength of light. This fact indicates the effectiveness of using the array crystal as a standard measure of the quality of the probe.(4) The bandwidth of the photonic bands becomes narrow as the particle size reduces with keeping the same inter-particle distance. The inter-particle overlapping of the WG modes of each particle is essential as in the case of the form … More ation of electronic bands.2. Development of high functionality(1) Quartz oscillator was used to control the probe height instead of laser control.(2) SNOM apparatus was put in a cryostat and the measurement was done at 100K.(3) A straight fiber probe made possible the polarization measurement and successively applied for the measurement of crystal orientation of sub-micron crystals of perylene.(4) UV measurements with use of silica fiber and flexible measurements with using the probes of small stiffness constant were both realized.3. Nano-scale processing by light(1) Holes of less than 100nm in diameter and a few tens of nm in depth were made by irradiation of near-field light on the surface of perylene microcrystals. The processing became possible due to the photo-excitation of surface excitons, that accelerate the desorption or dissociation of constituent molecules on the surface.(2) Temporal topographic change after the photo-processing was investigated by AFM. Average diffusion speed of the surface molecules were about 2〜3nm/min. Less

扫描近场光学显微镜（SNOM）及其高功能的纳米尺度光谱已研究如下1。近场对聚苯乙烯细粒子阵列晶体的影响。（1）SNOM传输图像被逆转，因为光的波长交叉了晶体的光带共振。（2）SNOM模式类似于照明和收集模式，因为探针主要拾取了平行于层的极化成分。（3）SNOM模式根据粒子半径，光探针的孔径大小和光的波长而大大变化。这个事实表明，使用阵列晶体作为探针质量的标准度量的有效性。（4）光子带的带宽变得狭窄，因为粒径减小以保持相同的粒子间距离。每个粒子的WG模式的颗粒间重叠至关重要，因为在形式的情况下……更多的电子带。2。高功能（1）石英振荡器用于控制探头高而不是激光控制。（2）将SNOM设备放入低温恒温器中，并在100K处进行测量。（3）直接纤维探针使极化测量并成功地应用于二级晶体晶体的晶体晶体晶体和水晶的测量值（4）使用较小的刚度常数问题的柔性测量均已实现。3。通过光（1）直径小于100nm的孔（1）孔的纳米尺度处理，并深入进行了几十nm的深度，通过辐照perylene微晶表面的近场光线进行。由于表面激子的光启动，加速了该处理，从而加速了表面上成分分子的解吸或解离。表面分子的平均扩散速度约为2-3nm/min。较少的