Application of spectral surface plasmon resonance to gas pressure sensing

Chi Lai Wong; HoPui Ho; Kwok-Sum Chan; Shu-Yuen Wu; Chinlon Lin

doi:10.1117/1.2148913

1 December 2005 Application of spectral surface plasmon resonance to gas pressure sensing

Chi Lai Wong, HoPui Ho, Kwok-Sum Chan, Shu-Yuen Wu, Chinlon Lin

Author Affiliations +

Optical Engineering, Vol. 44, Issue 12, 124403 (December 2005). https://doi.org/10.1117/1.2148913

Abstract

An optical sensor to be used for gas pressure detection is described. The device is based on the spectral response associated with the surface plasmon resonance (SPR) occurring on a 50-nm gold surface. The operation of the device relies on the fact that the refractive index of a gas changes with pressure, which leads to a shift in the resonance wavelength dip λ_SPR in the SPR curve. Experiments performed on nitrogen gas at room temperature demonstrated the sensor resolution of 4.4×10^–5 RUI, which corresponds to a pressure resolution of 16 kPa. The new device offers the benefits of wide dynamic range, no moving parts, and possibly 2-D imaging of pressure distribution. Further development of the device may lead to a new type of optical pressure sensors.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Chi Lai Wong, HoPui Ho, Kwok-Sum Chan, Shu-Yuen Wu, and Chinlon Lin "Application of spectral surface plasmon resonance to gas pressure sensing," Optical Engineering 44(12), 124403 (1 December 2005). https://doi.org/10.1117/1.2148913

Published: 1 December 2005

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