1 May 2010 Approach the angular sensitivity limit in surface plasmon resonance sensors with low index prism and large resonant angle
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Abstract
Surface plasmon resonance (SPR) sensors have been studied thoroughly for the past two decades. However, we found that the angular sensitivity in a prism-coupled SPR sensor can be as high as 500 deg/refractive index unit (RIU), which is two times higher than the sensitivity that has ever been achieved in previous studies. Such a high angular sensitivity can be fully achieved by simply choosing a proper low-index prism and a sufficiently large resonant angle for the light signal at an appropriate wavelength with an optimal metal film thickness. A feasible implementation of such an SPR sensor design concept was also proposed, and an even higher sensitivity of 600 deg/RIU can be achieved.
© (2010) Society of Photo-Optical Instrumentation Engineers (SPIE)
Ding-Wei Huang, Ding-Wei Huang, Yao-Feng Ma, Yao-Feng Ma, Ming-Je Sung, Ming-Je Sung, Chiao-Pan Huang, Chiao-Pan Huang, } "Approach the angular sensitivity limit in surface plasmon resonance sensors with low index prism and large resonant angle," Optical Engineering 49(5), 054403 (1 May 2010). https://doi.org/10.1117/1.3431662 . Submission:
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