Localized surface plasmon resonance biosensor: an improved technique for SERS response intensification

被引：62
作者：
Islam, Md. Saiful [1 ,2 ]
Sultana, Jakeya [1 ]
Aoni, Rifat Ahmmed [3 ]
Habib, Md. Selim [4 ]
Dinovitser, Alex [1 ]
Ng, Brian W. -H. [1 ]
Abbott, Derek [1 ]
机构：
[1] Univ Adelaide, Sch Elect & Elect Engn, Adelaide, SA 5005, Australia
[2] Univ Adelaide, IPAS, Adelaide, SA 5005, Australia
[3] Australian Natl Univ, Res Sch Phys & Engn, Nonlinear Phys Ctr, Canberra, ACT 2601, Australia
[4] Univ Cent Florida, Coll Opt & Photon, Orlando, FL 32816 USA
来源：
OPTICS LETTERS | 2019年 / 44卷 / 05期
基金：
澳大利亚研究理事会;
关键词：
SENSOR;
D O I：
10.1364/OL.44.001134
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
As technology continues to advance, the development of novel sensing systems opens new possibilities for low-cost, practical biosensing applications. In this Letter, we demonstrate a localized surface plasmon resonance system that combines both wave-guiding and plasmonic resonance sensing with a single microstructured polymeric structure. Characterizing the sensor using the finite element method simulation shows, to the best of our knowledge, a record wavelength sensitivity (WS) of 111000 nm/refractive index unit (RIU), high amplitude sensitivity (AS) of 2050 RIU-1, high sensor resolution and limit of detection of 9 x 10(-7) RIU and 8.12 x 10(-12) RIU2/nm, respectively. Furthermore, these sensors have the capability to detect an analyte within the refractive index range of 1.33-1.43 in the visible to mid-IR, therefore being potentially suitable for applications in biomolecular and chemical analyte detection. (c) 2019 Optical Society of America
引用
收藏
页码：1134 / 1137
页数：4
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