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.
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.
作者
韩壮
翁占坤
牛浩博
李昂
HAN Zhuang;WENG Zhankun;NIU Haobo;LI Ang(International Research Centre for Nano Handling and Manufacturing of China(CNM),Changchun University of Science and Technology,Changchun 130022,China)
出处
《中国科技论文在线精品论文》
2021年第4期492-497,共6页
Highlights of Sciencepaper Online
