Affiliation:
1. Shanghai University of Engineering Science
2. University of Shanghai for Science and Technology
Abstract
This study optimizes a surface plasmon resonance (SPR) sensor based on
S
i
O
2
-
A
g
periodic grating using graphene and a
M
o
S
2
hybrid structure to enhance sensitivity. The sensing performance was analyzed by wavelength modulation. By optimizing the structural parameters, we can obtain the quality factor and sensitivity of
90.192
R
I
U
−
1
and
960
n
m
⋅
R
I
U
−
1
. The periodic grating surface covered with
M
o
S
2
prevents the oxidation of the silver layer and increases the adsorption of biomolecules. Compared with the conventional silver grating SPR sensor, the sensor’s sensitivity and quality factor can be significantly enhanced. Experiments were carried out using sucrose solutions with different refractive indices, and the results indicate there was a good linear relationship between the resonance wavelength and the sucrose solution. The sensor has vast potential for practical applications.
Funder
Shanghai Science and Technology Innovation Action Plan
National Natural Science Foundation of China
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering
Cited by
34 articles.
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