Sensitive Surface Plasmon Resonance biosensor based on a photonic crystal and bimetallic configuration

Author

Fang Wang ; Chaoying Chen ; Peiling Mao ; Yunhan Luo ; Xiaolong Chen ; Junbin Fang ; Shuihua Peng ; Jun Zhang ; Jieyuan Tang ; Huihui Lu ; Zhe Chen ; Jianhui Yu

Author_Institution

Key Lab. of Optoelectron. Inf. & Sensing Technol. of Guangdong Higher Educ. Inst., Jinan Univ., Guangzhou, China

fYear

2014

fDate

1-4 Sept. 2014

Firstpage

117

Lastpage

118

Abstract

In this paper, we present and numerically demonstrate a highly sensitive photonic crystal (PC) Surface Plasmon Resonance (SPR) sensor. This proposed sensor consists of an Ag-Au bimetallic configuration that integrates the better evanescent field enhancement of silver, the higher resolution in the reflectivity minimum of silver, and the high chemical of gold. In comparison to most convenient SPR sensors which use single gold films, this PC-bimetallic configuration is shown theoretically to possess a narrower resonance width, smaller minimum reflectance and higher sensitivity, which makes it a much better choice to be employed for SPR biosensing applications.

Keywords

biosensors; gold; numerical analysis; photonic crystals; silver; surface plasmon resonance; Ag-Au; Ag-Au bimetallic configuration; PC-SPR sensor; PC-bimetallic configuration; high-sensitive photonic crystal surface plasmon resonance sensor; numerical analysis; Biosensors; Gold; Optical surface waves; Photonic crystals; Plasmons; Reflectivity; Silver; FOM; Refractive index; Surface Plasmon Resonance; bimetallic configuration; full-width at half-maximum; photonic crystal; reflectance;

fLanguage

English

Publisher

ieee

Conference_Titel

Numerical Simulation of Optoelectronic Devices (NUSOD), 2014 14th International Conference on

Conference_Location

Palma de Mallorca

ISSN

2158-3234

Print_ISBN

978-1-4799-3681-6

Type

conf

DOI

10.1109/NUSOD.2014.6935384

Filename

6935384