Polyhedron Biosensor Based on the Surface Plasmon Resonance Technology in Heterodyne Interferometry

Abstract:

In this article, a polyhedron biosensor based on the surface plasmon resonance technology in heterodyne interferometry is proposed. The sensor is designed as the polygon prism that is made of BK-7 glass with the refractive index of 1.51509. As a heterodyne optical source is launched into the biosensor, the phase difference between s-and p-polarization components can be obtained. The related parameters of the tested medium can be achieved after some calculations. The best resolution of the sensor can reach 5.5×10^-7 refractive index unit (RIU). The polyhedron biosensor has some merits, e.g., a simple optical setup, easy operation, high measurement accuracy, high resolution, high sensitivity, and in real-time test, etc.

• Periodical: Advanced Materials Research (Volume 716)
• Pages: 510-515
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.716.510
• Online since: July 2013
• Authors: Shinn Fwu Wang, Hao Ma, Fu Hsi Kao, An Li Liu
• Keywords: Heterodyne Interferometry (HI), Kretchmanns Configuration, Polyhedron Biosensor, Surface Plasmon Resonance (SPR)

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