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High Sensitivity Plasmonic Sensor Based on Fano Resonance with Inverted U-Shaped Resonator
- Source :
- Sensors (Basel, Switzerland), Sensors, Vol 21, Iss 1164, p 1164 (2021)
- Publication Year :
- 2021
- Publisher :
- MDPI, 2021.
-
Abstract
- Herein, we propose a tunable plasmonic sensor with Fano resonators in an inverted U-shaped resonator. By manipulating the sharp asymmetric Fano resonance peaks, a high-sensitivity refractive index sensor can be realized. Using the multimode interference coupled-mode theory and the finite element method, we numerically simulate the influences of geometrical parameters on the plasmonic sensor. Optimizing the structure parameters, we can achieve a high plasmonic sensor with the maximum sensitivity for 840 nm/RIUand figure of merit for 3.9 × 105. The research results provide a reliable theoretical basis for designing high sensitivity to the next generation plasmonic nanosensor.
- Subjects :
- finite element method
Physics::Optics
02 engineering and technology
Fano plane
lcsh:Chemical technology
01 natural sciences
Biochemistry
Analytical Chemistry
010309 optics
Resonator
Nanosensor
0103 physical sciences
Figure of merit
lcsh:TP1-1185
Sensitivity (control systems)
Electrical and Electronic Engineering
plasmonic nanosensor
Instrumentation
Plasmon
Physics
business.industry
Communication
Fano resonance
021001 nanoscience & nanotechnology
Atomic and Molecular Physics, and Optics
Optoelectronics
metal-dielectric-metal
0210 nano-technology
business
Refractive index
Subjects
Details
- Language :
- English
- ISSN :
- 14248220
- Volume :
- 21
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Sensors (Basel, Switzerland)
- Accession number :
- edsair.doi.dedup.....f3a03241383fd24a02c53df5537e8f4a