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190705-大面积银微纳光栅的制备及其表面等离子体共振传感特性研究

   作者:镀涂学堂小编    单位:电镀与涂饰    日期:2019-05-06     浏览:239    评论:0    
提示:中文核心期刊,中国科技核心期刊! DOI: 10.19289/j.1004-227x.2019.07.005大面积银微纳光栅的制备及其表面等离子体共振传感特性

中文核心期刊,中国科技核心期刊!



DOI: 10.19289/j.1004-227x.2019.07.005

大面积银微纳光栅的制备及其表面等离子体共振传感特性研究

陈志伟1,郎咸忠1, *,唐斌1,朱熠奇1,吴钦2,蒋美萍1, **(1.常州大学数理学院,江苏 常州 213164;2.常州一中物理部,江苏 常州 213003)

摘要:提出了一种基于普通CD-R 光盘聚碳酸酯层表面磁控溅射镀银的简便纳米制备技术,用以大面积制备一维银微纳光栅,该光栅可作为高灵敏、低成本的表面等离激元共振(SPR)传感器。通过实验测量和数值计算的方法研究了银层厚度对银微纳光栅SPR 的影响。结果发现,银层厚度为108 nm 的银微纳光栅具有最优的综合传感性能,其灵敏度和品质因数分别达到490 nm/RIU和22 RIU−1。该技术在化学生物传感器制备方面具有潜在的应用价值。

关键词:聚碳酸酯;银;磁控溅射;光栅;表面等离子体共振;时域有限差分法;蔗糖;折射率传感

中图分类号:TG174.444; TP212 

文献标志码:A
       文章编号:1004 – 227X (2019) 07 – 0311 – 06

Preparation of large-area silver micro-nano grating and study on its surface plasmon resonance sensing property // CHEN Zhi-wei, LANG Xian-zhong*, TANG Bin, ZHU Yi-qi, WU Qin, JIANG Mei-ping**

Abstract: A facile nanotechnology was developed for fabrication of large-area one-dimensional silver micro-nano grating by magnetron sputtering of silver on the polycarbonate layer of ordinary CD-R (compact disc-recordable) as high-sensitivity and cost-efficient surface plasmon resonance (SPR) sensor. The effect of silver thickness on the plasmonic sensing performance was studied by experimental measurement and numerical calculation. It was found that the silver micro-nano grating with a silver layer thickness of 108 nm had the best integrated sensing performance. Its sensitivity and figure of merit reached 490 nm/RIU and 22 RIU−1, respectively. The method shows a great potential application in the preparation of chemoand biosensors.

Keywords: polycarbonate; silver; magnetron sputtering; grating; surface plasmon resonance; finite-difference time-domain method; sucrose; refractive index sensing

First-author’s address: School of Mathematics and Physics, Changzhou University, Changzhou 213164, China

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