Journal
SENSORS
Volume 20, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/s20041028
Keywords
surface plasmon resonance; Goos-Hanchen shifts; transition metal dichalcogenides; graphene; sensitivity
Funding
- Electrostatic Research Foundation of Liu Shanghe Academicians and Experts Workstation, Beijing Orient Institute of Measurement and Test [BOIMTLSHJD20181001]
- Natural Science Foundation of Hubei Province [2019CFB598]
- Wuhan Science and Technology Bureau [2018010401011297]
- Fundamental Research Founds for Central University, China University of Geosciences(Wuhan) [1910491B06]
Ask authors/readers for more resources
In order to improve the performance of surface plasmon resonance (SPR) biosensor, the structure based on two-dimensional (2D) of graphene and transition metal dichalcogenides (TMDCs) are proposed to greatly enhance the Goos-Hanchen (GH) shift. It is theoretically proved that GH shift can be significantly enhanced in SPR structure coated with gold (Au)-indium tin oxide (ITO)-TMDCs-graphene heterostructure. In order to realize high GH shifts, the number of TMDCs and graphene layer are optimized. The highest GH shift (-801.7 lambda) is obtained by Au-ITO-MoSe2-graphene hybrid structure with MoSe2 monolayer and graphene bilayer, respectively. By analyzing the GH variation, the index sensitivity of such configuration can reach as high as 8.02 x 10(5) lambda/RIU, which is 293.24 times of the Au-ITO structure and 177.43 times of the Au-ITO-graphene structure. The proposed SPR biosensor can be widely used in the precision metrology and optical sensing.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available