Evanescent field response to immunoassay layer thickness on planar waveguides

Rongjin Yan, Guangwei Yuan, Matthew D. Stephens, Xinya He, Charles S. Henry et al.
The response of a compact photonic immunoassay biosensor based on a planar waveguide to variation in antigen (C-reactive protein) concentration as well as waveguide ridge height has been investigated. Near-field scanning optical microscope measurements indicate 1.7%/nm and 3.3%/nm top surface optica ... [Appl. Phys. Lett. 93, 101110 (2008)] published Thu Sep 11, 2008.
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