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Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
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Highly Sensitive and Tunable Plasmonic Sensor Based on a Nanoring Resonator with Silver Nanorods
Chung-Ting Chou Chao1, Yuan-Fong Chou Chau2, Hung Ji Huang3
1Department of Optoelectronics and Materials Technology, National Taiwan Ocean University, Keelung 20224, Taiwan.
Nanomaterials (Basel, Switzerland)
|July 26, 2020
Summary
This study introduces a novel plasmonic refractive index sensor with silver nanorods, achieving high sensitivity and tunability. The design offers a flexible and compact solution for sensing applications.
Area of Science:
- Plasmonics
- Nanophotonics
- Sensing Technology
Background:
- Plasmonic sensors offer high sensitivity for refractive index detection.
- Metal-insulator-metal waveguides with nanoring structures are promising for sensing applications.
Purpose of the Study:
- To numerically and theoretically investigate a novel plasmonic refractive index sensor.
- To explore the impact of silver nanorods on sensor performance, sensitivity, and tunability.
Main Methods:
- Finite element method (FEM) for numerical simulations.
- Theoretical analysis of plasmonic properties.
Main Results:
- The sensor achieved a high sensitivity of 2080 nm/RIU.
- Figure of merit and quality factor were 29.92 and 29.67, respectively.
- Silver nanorods enhanced sensitivity and induced new surface plasmon polaritons (SPPs) modes.
Conclusions:
- The proposed sensor demonstrates excellent sensitivity and tunability.
- Incorporating silver nanorods offers a flexible way to tune system response.
- The design allows for reduced sensor dimensions without performance compromise.
Keywords:
figure of meritmetal-insulator-metal waveguidenanoringplasmonic refractive index sensorsensitivity
