1 December 2005 Application of spectral surface plasmon resonance to gas pressure sensing
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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 λSPR 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)
Chi Lai Wong, Chi Lai Wong, HoPui Ho, HoPui Ho, Kwok-Sum Chan, Kwok-Sum Chan, Shu-Yuen Wu, Shu-Yuen Wu, Chinlon Lin, 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 . Submission:
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