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基于激光干涉诱导向后转移技术的金微纳条纹结构SERS特性研究

发表时间:2021-12-31  浏览量:275  下载量:26
全部作者: 韩壮,翁占坤,牛浩博,李昂
作者单位: 长春理工大学,国家纳米操纵与制造国际联合研究中心
摘 要: 为优化激光干涉诱导向后转移(laser-interference-induced backward transfer,LIIBT)技术制备微纳结构工艺参数,研究了激光脉冲数和激光能量密度对LIIBT技术的影响。以钠钙玻璃为接收衬底,金薄膜为靶材,在大气环境下进行双光束LIIBT实验验证。实验结果表明,随着激光脉冲数和激光能量密度增加,金微纳条纹的分辨率有明显提高。能谱仪(energy dispersive spectrometer,EDS)分析结果表明,在金微纳条纹结构上,Au元素随激光脉冲数的增加聚集在条纹区域。利用不同浓度的罗丹明B溶液作为探针分子进行拉曼光谱研究,发现了金微纳条纹结构对罗丹明B的表面增强拉曼散射(surface-enhanced Raman scattering,SERS)效应。总之,LIIBT为拉曼光谱测试低浓度有害物质提供一种便携、廉价的金属拉曼增强衬底。
关 键 词: 光学;激光干涉诱导向后转移(LIIBT);微纳条纹结构;金纳米颗粒;表面增强拉曼散射(SERS)
Title: SERS property of Au micro-nano stripe structure based on laser-interference-induced backward transfer
Author: HAN Zhuang, WENG Zhankun, NIU Haobo, LI Ang
Organization: International Research Centre for Nano Handling and Manufacturing of China (CNM), Changchun University of Science and Technology
Abstract: In order to optimize the laser-interference-induced backward transfer (LIIBT) process parameters for preparing micro-nano structures, the influence of laser pulse number and laser fluence on LIIBT was studied in this paper. Using sodium-calcium glass as the receiving substrate and Au film as the target, the double-beam LIIBT experiment was carried out in an atmospheric environment. The experimental results showed that as the laser pulse number and laser fluence increase, the resolution of Au micro-nano stripe was significantly improved. The energy dispersive spectrometer (EDS) analysis results indicated that in the Au micro-nano stripe structure, the Au elements gathered in the stripe area with the increase of the laser pulse number. Using rhodamine B solution with different concentrations as probe molecules for Raman spectroscopy, 6 characteristic peaks were found, which proved the surface-enhanced Raman scattering (SERS) effect of the Au micro-nano stripe structure on rhodamine B. The study demonstrates that LIIBT provides a simple and cheap metal Raman-enhanced substrate for Raman spectroscopy testing of low-concentration harmful substances.
Key words: optics; laser-interference-induced backward transfer (LIIBT); micro-nano stripe structure; Au nanoparticles; surface-enhanced Raman scattering (SERS)
发表期数: 2021年12月第4期
引用格式: 韩壮,翁占坤,牛浩博,等. 基于激光干涉诱导向后转移技术的金微纳条纹结构SERS特性研究[J]. 中国科技论文在线精品论文,2021,14(4):492-497.
 
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