Theoretical comparison between graphene-on-silver and gold-on-silver based surface plasmon resonance sensor

In this paper, we present a detailed theoretical analysis of a Kretschmann configuration based graphene-on-silver thin film. The advantage of silver is the better evanescent field enhancement and it possesses a narrow full width at half maximum of the plasmon resonance, hence silver providing higher...

Full description

Saved in:
Bibliographic Details
Main Author: Zekriti, M.
Format: Conference Proceeding
Language:English
Subjects:
Field enhancement
Graphene
Plasmonic
Reflectivity
Resolution
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, we present a detailed theoretical analysis of a Kretschmann configuration based graphene-on-silver thin film. The advantage of silver is the better evanescent field enhancement and it possesses a narrow full width at half maximum of the plasmon resonance, hence silver providing higher resolution. On the other hand, the ultra-low permeability of graphene and the extremely low thickness make it a very good candidate to protect silver against oxidation without loss of resolution. The obtained results from numerical calculations clearly exhibit sharp reflectivity curve for graphene as protective layer in comparison with gold. These results suggest that graphene-on-silver based SPR biosensors have potential for use in high-precision measurements.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2021.02.532