纳米金属复合孔阵列强透射折射率传感器研究-《深圳大学学报理工版》

文章信息/Info

Title:: Strong transmittance refractive index sensing characteristics of nano-metal composite hole arrays

作者:: 杨宏艳1; 2; 韦柳夏2; 黄文海3; 刘厚权2; 滕传新2; 陈明2; 邓洪昌2; 徐荣辉2; 邓仕杰2; 苑立波2; 1) 桂林电子科技大学广西自动检测技术与仪器重点实验室，广西桂林 541004；2) 桂林电子科技大学电子工程与自动化学院，广西桂林 541004；3) 桂林电子科技大学信息与通信学院，广西桂林 541004

Author(s):: YANG Hongyan1; 2; WEI Liuxia2; HUANG Wenhai3; LIU Houquan2; TENG Chuanxin2; CHEN Ming2; DENG Hongchang2; XU Ronghui2; DENG Shijie2; and YUAN Libo2; 1) Guangxi Key Laboratory of Automatic Detecting Technology and Instruments, Guilin University of Electronic Technology, Guilin 541004, Guangxi Zhuang Autonomous Region, P.R.China 2) School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, Guangxi Zhuang Autonomous Region, P.R.China 3) School of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, Guangxi Zhuang Autonomous Region, P.R.China

Keywords:: optical sensor; surface plasma resonance; ring-rectangle hole arrays; finite-difference time-domain method; optical transmission; refractive index sensing characteristics

摘要:: 设计一种圆环-矩形金属纳米复合孔阵列折射率传感器．采用时域有限差分法进行数值计算，讨论复合结构的周期、旋转角度、圆环内径以及矩形长和宽等参数对光透射特性的影响，并分析复合纳米孔狭缝宽度对灵敏度的影响．结果表明，经过参数优化后，可获得的最佳光透射率高达84.4%，灵敏度达(2 613±75) nm/RIU．该研究为设计和实现下一代高灵敏度金属纳米等离子体生化传感器提供理论依据．

Abstract:: We design a kind of ring-rectangle metal nano-composite hole array structure. By using finite-difference-time-domain (FDTD) method, we discuss the influences of parameters of the period, rotation angle, inner diameter of the ring, and length and width of the rectangle on the optical transmission characteristics of the composite structure, and we also analyze the influence of the slit width of composite nanopore on the sensitivity in detail. Results show that the optimum optical transmittance and sensitivity can reach 84.4% and (2 613±75) nm/RIU after parameter optimization. The research provides a theoretical basis for the design of the next generation of high sensitivity metal nano-plasmonic biochemical sensor.