Development of Near Field Spectroscopy for Semiconductor and Biological System

在学术研究基础设施计划的协助下，将购买设备来开发用于半导体和生物系统研究的专用近场扫描光学显微镜(NSOM)。主要部件包括NSOM控制电子和软件、光谱仪、直流和高频探头、半导体参数分析仪、长波探测器、电荷耦合器件(CCD)探测器、倒置显微镜底座和光学元件以及热电安装和控制器。NSOM实验室将用于研究：1)光电子器件的亚波长光谱成像；2)高分辨率光致发光和调谐激发的半导体材料表征；3)用剪切力显微镜测定光电子器件工作条件下的局部加热；4)生物系统的荧光成像，包括生色团标记的DNA阵列结构；5)细菌视紫红质的局部激发和吸附简档，以确定薄膜的结构和功能；6)近场条件下大动量光谱分析的基础研究。将开发一种近场扫描光学显微镜，用于研究半导体和生物系统。半导体工作将集中在固体激光等光电子系统的研究上，而生物学工作将研究生色团标记的DNA结构和细菌视紫质的薄膜。

Equipment will be purchased to develop a dedicated near-field scanning optical microscope (NSOM) for the study of semiconductor and biological systems with the assistance of the Academic Research Infrastructure Program. The major components are NSOM control electronics and software, a spectrometer, DC and high frequency probes, semiconductor parameter analyzer, long wavelength detectors, a charge-coupled-device (CCD) detector, an inverted microscope foundation and optics, and a themoelectric mount and controller. The NSOM laboratory will be used to study: 1) sub-wavelength spectrocopic imaging of optoelectronic devices; 2) semiconductor material characterization from high resolution photoluminescence and tuned excitation; 3) local heating determination under operating conditions for optoelectronic devices with shear force microscopy; 4) fluoresence imaging of biological systems, including chromophore tagged DNA array structures; 5) local excitation and adsorption profiling of Bacteriorhodopsin to determine structure and functionality in thin films; 6) basic studies of new types of spectroscopy possible with large momentum of the evanescent fields in the near-field regime. A near-field scanning optical microscope will be developed for the study of semiconductor and biological systems. The semiconductor work will concentrate on the study of optoelectronic systems such as solid state lasers, while the biological work will study chromophore tagged DNA structures and thin films of Bacteriorhodopsin.