光学 精密工程, 2020, 28 (2): 405, 网络出版: 2020-05-27   

三光束激光干涉诱导向后转移制备金纳米结构及其SERS特性

Fabrication and SERS of Au nanostructures by three beams laser-interference-induced backward transfer technique
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, 吉林 长春 130022
摘要
为了提高激光诱导向后转移制备微纳阵列结构的效率, 本文提出三光束激光干涉诱导向后转移(LIIBT)技术, 为激光干涉技术与激光诱导向后转移的有机结合。本文以ITO玻璃为接收衬底, 金薄膜为靶材, LIIBT过程中采用三光束激光干涉进行加工。SEM结果表明, 在激光能量密度为25 mJ/cm2, 金膜厚度为50 nm条件下, 获得了较好的阵列结构, 周期为5 μm, 金纳米粒子均匀分布在其表面, 尺寸小于100 nm的粒子达到80%以上。EDX分析结果表明微米尺度点阵由大量的In元素组成, 该结构的形成源于激光与ITO层相互作用。将1.0×10-5, 1.0×10-7和1.0×10-9M的罗丹明6G溶液, 旋涂于微结构表面并进行拉曼光谱研究, 在612 cm-1, 773 cm-1, 1 190 cm-1, 1 319 cm-1和1 511 cm-1处发现了罗丹明6G的特征峰, 说明制备的金纳米结构对微量的罗丹明6G有明显的SERS效应。本文提出的LIIBT技术将大大提高激光诱导向后转移制备微纳阵列结构的效率, 在超灵敏检测、光电子器件、微流控等领域均具有广泛的应用前景。
Abstract
In order to improve the fabricating efficiency ofn micro-and nano-structures by laser-induced backward transfer technology, a three-beams laser-interference-induced backward transfer (LIIBT) method was established to fabricate micro-nano structure arrays, which was based on laser interference and laser-induced backward transfer technology. In this article, Indium Tin Oxide (ITO) glass was used as a substrate to receive an Au nanoparticles jet from Au thin film. The LIIBT was carried out by three-beams laser interference. The Scanning Electron Microscopy(SEM) images indicate that the a perfect 5-μm period structure could be fabricated under the laser fluence of 25 mJ/cm2 for the Au 50 nm thin film 50 nm. Meanwhile, uniform distribution of the Au nanoparticles could be observed on the surface of the period structures, and the over 80% of Au nanoparticles over 80% were smaller than 100 nm. The Energy-Dispersive X-ray spectroscopy (EDX) analysis shows that the microscale period structures were composed of a lot of Inand Au elements, which prove validates the fabrication of theisemicroscale period structures due to the laser pulse ablation on the ITO layer, and then, Au nanoparticles were deposited on it, simultaneously. Finally, the SERS was studied by the Raman spectrum for the Au nanostructures after coating them with 1.0×10-5, 1.0×10-7, and 1.0×10-9 M rhodamine 6G. The results show that these peaks are located at 612 cm-1, 773 cm-1, 1 190 cm-1, 1 319 cm-1, and 1 511 cm-1, which indicate that the Au nanostructures had obvious SERS effect for the trace of the R6G. The LIIBT will be used to improve the efficiency of the laser-induced backward transfer technique on the micro and nanostructure. This technique, which will have the potential applications for the ultra-sensitive detection, optoelectronic devices, and microfluidic flow control systems.

蒋旭珂, 翁占坤, 曹亮, 刘日, 王作斌. 三光束激光干涉诱导向后转移制备金纳米结构及其SERS特性[J]. 光学 精密工程, 2020, 28(2): 405. 蒋旭珂, 翁占坤, 曹亮, 刘日, 王作斌. Fabrication and SERS of Au nanostructures by three beams laser-interference-induced backward transfer technique[J]. Optics and Precision Engineering, 2020, 28(2): 405.

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!