光学学报, 2019, 39 (2): 0228002, 网络出版: 2019-05-10   

多通道局域表面等离子体共振分析装置构建及实验研究 下载: 947次

Construction and Experimental Study of a Multi-Channel Localized Surface Plasmon Resonance Analysis Device
作者单位
1 河南农业大学机电工程学院, 河南 郑州 450002
2 河南农业大学理学院, 河南 郑州 450002
3 郑州轻工业学院材料与化学工程学院, 河南 郑州 450001
摘要
构建了一套由宽带光源、多通道精确定位机构及光纤光谱仪等组成的光学局域表面等离子体共振(LSPR)分析装置。采用Savitzky-Golay平滑算法对原始光谱数据进行预处理并建立拟合曲线,研究了粒径为5.0,13.5,25.5,41.0 nm的球形金纳米粒子(AuNPs)LSPR波长在不同折射率介质环境下的响应。结果表明:在相同的介质环境下,LSPR波长与粒径具有较好的正相关性,且共振波长与环境介质的折射率密切相关;对于粒径为25.5 nm和41.0 nm的AuNPs,得到的折射率灵敏度分别为59.46 nm/RIU和70.38 nm/RIU。该装置将多通道定位机构与光纤光谱仪相结合,光谱信号的获取无需进行冗长的波长扫描过程,为开展LSPR研究提供了一种低成本、快速的光学检测系统。
Abstract
In this study, a multi-channel analysis device based on localized surface plasmon resonance (LSPR) is demonstrated. This device comprises a broadband light source, a multi-channel precision alignment system, and a fiber spectrometer. The Savitzkky-Golay algorithm is used to process the original spectral data, and fitting curves are obtained. Further, the LSPR wavelength responses of spherical gold nanoparticles (AuNPs) with diameters of 5.0, 13.5, 25.5, and 41.0 nm in the surrounding mediums with different refractive indices are studied. The experimental results demonstrate that the LSPR peak wavelength is positively correlated with the particle size for the same refractive index, and the resonant wavelength is closely related to the refractive index of the surrounding medium. The sensitivities of the refractive index are 59.46 and 70.38 nm/RIU (refractive index unit, RIU) for AuNPs with diameters of 25.5 and 41.0 nm, respectively. The proposed device does not require any tediously long wavelength scanning procedures owing to the combination of a multi-channel alignment system and a fiber spectrometer, thereby providing an inexpensive and rapid optical detection system for conducting LSPR research.

王顺, 张浩, 李伟, 李世欣, 赵建波, 郭清乾, 王玲, 商俊娟, 李鑫, 胡建东. 多通道局域表面等离子体共振分析装置构建及实验研究[J]. 光学学报, 2019, 39(2): 0228002. Shun Wang, Hao Zhang, Wei Li, Shixin Li, Jianbo Zhao, Qingqian Guo, Ling Wang, Junjuan Shang, Xin Li, Jiandong Hu. Construction and Experimental Study of a Multi-Channel Localized Surface Plasmon Resonance Analysis Device[J]. Acta Optica Sinica, 2019, 39(2): 0228002.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!