纳米等离激元暗场显微系统的构建  

The Construction of Nanoplasmon Dark-fieldd Microscopy System

作　　者：张文嘉 杜谦 王庆兆 董玥萌 王辉 刘国华[1,2] Zhang Wenjia;Du Qian;Wang Qingzhao;Dong Yuemeng;Wang Hui;Liu Guohua(Engineering Research Center of Thin Film Optoelectronics Technology of Ministry of Education,College of Electronic Information Technology and Optical Engineering,Nankai University,Tianjin 300071,China;Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology,Tianjin 300071,China)

机构地区：[1]南开大学电子信息与光学工程学院,薄膜光电子技术教育部工程研究中心,天津300350 [2]天津市光电传感器与传感网络技术重点实验室,天津300071

出　　处：《南开大学学报（自然科学版）》2023年第3期23-26,共4页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金(61771261)。

摘　　要：构建了一套透射式的纳米等离激元暗场显微系统,光源入射端采用连续波长调制暗场光源的技术方法,探测端采用灰度工业相机连续采集对应波长的暗场图像,利用自编的matlab程序对图像进行光谱提取,提高了纳米粒子的散射光谱的检测精度.采集纳米粒子聚集前后的局域表面等离子共振光谱,实验结果与边界元方法(BEM)仿真结果一致.A set of nano-plasmon dark-field microscopy system with transmission structure was constructed.At the incident end of the light source,continuous wavelength modulation of the dark-field light source is adopted.At the detection end,a grayscale industrial camera is used to continuously collect the corresponding wavelength.Next,our home-made Matlab program is used to extract the spectrum of the image.the detection accuracy of the scattering spectra of nanoparticles is improved greatly.This dark field microscope system is used to collect the LSPR spectra before and after the aggregation of nanoparticles,and the experimental results are consistent with the boundary element methods(BEM)simulation results.

关 键 词：暗场显微镜 纳米颗粒 局域表面等离子共振(LSPR) 散射光谱 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]