Optimizing Gas Sensor Performance Using Bilayer Surface Plasmon System
Abstract
The sensitivity of a gold-silver bilayer system for gas detection was investigated using angle-fixed reflectance measurements and numerical calculations based on the transfer-matrix method. Two configurations of bilayer systems were analyzed: gold on silver and silver on gold. According to calculations, the best sensitivity values were achieved with a total thickness of approximately 55 nm for the gold on silver system and approximately 65 nm for the silver on gold system. These calculations were supported by experimental results in a Kretschmann configuration for ethanol gas sensing. The bilayer systems showed a huge advantage compared to the widely used single gold thin film, however, special attention should be paid to the silver on gold configuration, as corrosion plays an important role in decreasing sensitivity.
Cite
@article{arxiv.2408.08330,
title = {Optimizing Gas Sensor Performance Using Bilayer Surface Plasmon System},
author = {Albania Urriola and Paolo Leonelli and Héctor Miranda and Alfredo Campos},
journal= {arXiv preprint arXiv:2408.08330},
year = {2024}
}
Comments
14 pages, 5 figures