摘要
为了优化激光干涉诱导向后转移(Laser Interference Induced Backward Transfer,LIIBT)制备微结构的工艺参数,研究了激光脉冲数和能量密度对LIIBT的影响,分析了银微条纹的形成机制,并研究了银微条纹结构对环丙沙星的拉曼增强效应。以钠钙玻璃为接收衬底,银薄膜为靶材,在大气环境下基于双光束LIIBT制备了银微条纹结构。SEM测试结果表明,随着脉冲数量和激光能量密度的增加,银微条纹的边界变得更加清晰,EDS分析表明微条纹结构由银纳米粒子组成。拉曼测试中,当环丙沙星浓度降低到10^(-8)mol/L时,该结构仍表现出明显的表面增强拉曼散射效应。最后,分析了银纳米粒子转移过程及二次脉冲形成微条纹结构的机制。通过优化LIIBT制备银微条纹结构的工艺参数,揭示了LIIBT过程中银微条纹结构的形成机制,验证了该结构对低浓度环丙沙星具有明显的表面增强拉曼散射效应,为环境污染和食品工程等领域抗生素残留的高灵敏度检测提供了技术支持。
To optimize the parameters of laser-interference-induced backward transfer(LIIBT)for preparation of micro-structures,this study investigated the influence of laser pulse quantity and fluence on LIIBT,analyzed the formation mechanism of Ag micro-stripes,and imaged the Ag micro-stripes structure on ciprofloxacin using surface-enhanced Raman spectroscopy(SERS).The silver micro-stripe structures were prepared using two-beam LIIBT at atmosphere in which a sodium-calcium glass and silver film were used as the receiving substrate and target material,respectively.The scanning electron microscopy(SEM)results showed that the boundaries of the silver micro-stripe became clear by increasing the pulse quantity and laser fluence.The energy-dispersive x-ray spectroscopy(EDS)results showed that the micro-stripe structure was composed of silver nanoparticles.In addition,although the concentration of ciprofloxacin was reduced to 10^(-8) mol/L,its effect on the SERS results was apparent in terms of the silver micro stripes.Finally,the transferring mechanism of silver was discussed based on the secondary pulse.This study optimized the experimental parameters for preparing a silver micro-stripe structure by LIIBT,examined its formation mechanism,verified that its structure had noticeable SERS effects to detect low ciprofloxacin concentrations,and provided a SERS substrate for high sensitivity antibiotic residue detection in environmental pollution and food engineering.
作者
韩壮
翁占坤
曹亮
刘日
王深智
楚学影
李金华
王作斌
HAN Zhuang;WENG Zhankun;CAO Liang;LIU Ri;WANG Shenzhi;CHU Xueying;LI Jinhua;WANG Zuobin(International Research Centre for Nano Handling and Manufacturing of China(CNM),University of Science and Technology,Changchun 130022,China;School of Science,Changchun University of Science and Technology,Changchun 130022,China)
出处
《光学精密工程》
EI
CAS
CSCD
北大核心
2022年第9期1029-1037,共9页
Optics and Precision Engineering
基金
吉林省发展改革委员会(创新能力建设)项目(No.2020C022-1)。
关键词
激光干涉诱导向后转移
微条纹结构
银纳米粒子
表面增强拉曼散射
环丙沙星
laser interference induced backward transfer(LIIBT)
micro-stripe structure
silver nanoparticles
surface enhanced Raman scattering(SERS)
ciprofloxacin
