表面增强拉曼散射光谱（SERS）可以超高灵敏的获得分子指纹信息，自发现以来发展迅速，已经广泛的应用于物理、化学、生物、材料和医学等领域。SERS增强的机理从物理本质上决定了高增强的SERS纳米结构其增强效应难以保证一致，而且要求待测分子要足够靠近SERS活性表面（通常Surface enhanced Raman spectroscopy (SERS) can provide fingerprint information of target molecules and has been considered to be an ultrasensitive label-free detection method for a variety of applications. Due to the inherent mechanism of SERS, it is very difficulty to keep the enhanced factor of the SERS-active nanostructures as the same, as well as to make sure the target molecules close to the ...学位：理学博士院系专业：化学化工学院_物理化学学号：2052009015333
