Abstract
In this letter, silicon carbide (SiC) waveguide-based surface plasmon resonance optical sensor with an Ag-Au bilayer metal configuration was studied. The wide bandgap energy of SiC allows the sensor to operate in visible and near-infrared range. The spectrum of resonant wavelength with refractive index shows improved sensitivity and sensing resolution in the Au-Ag bilayer configuration than in the single Au layer configuration. A sensitivity of 2581 nm/RIU (refractive index unit) indicated by the shift of resonant wavelength with refractive index was observed from a refractive index range of n=1.34–1.36, showing that the sensor is desirable for sensing in a series of biological analytes interesting to research, such as Hepatitis B virus (HBV), glucose, etc.
Recommended Citation
W. Du and F. Zhao, "Silicon Carbide based Surface Plasmon Resonance Waveguide Sensor with a Bimetallic Layer for Improved Sensitivity," Materials Letters, vol. 186, pp. 224 - 226, Elsevier, Jan 2017.
The definitive version is available at https://doi.org/10.1016/j.matlet.2016.09.120
Department(s)
Electrical and Computer Engineering
Publication Status
Full Text Access
Keywords and Phrases
Sensors; Silicon carbide; Surface plasmon resonance; Waveguide
International Standard Serial Number (ISSN)
1873-4979; 0167-577X
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 Elsevier, All rights reserved.
Publication Date
01 Jan 2017
