14 February 2007 Interferometric surface plasmon resonance based on low-cost grating substrates
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Abstract
Surface plasmon resonance (SPR) has been used for some time in chemical and biological sensors. Some of the schemes for exciting surface plasmons include prisms and gratings. Grating-based optical SPR sensors have been demonstrated, which use light intensity variations at resonance or wavelength interrogation. Recently, a gold grating made from a commercial recordable compact disk was used for excitation of surface plasmons and SPR imaging. In this paper, we present a new grating configuration that combines the benefits of multi-angle interrogation with interferometric measurement techniques. This gives array sensing capability over a wide refractive index range. The set-up is based on the gold grating of commercially available recordable compact disks, which are mass produced by injection-moulding, resulting in low cost and disposable grating substrates. The potential of using this system for large sample number analysis is demonstrated.
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N. Sedoglavich, N. Sedoglavich, R. Künnemeyer, R. Künnemeyer, S. R. Talele, S. R. Talele, J. C. Sharpe, J. C. Sharpe, } "Interferometric surface plasmon resonance based on low-cost grating substrates", Proc. SPIE 6450, Plasmonics in Biology and Medicine IV, 64500S (14 February 2007); doi: 10.1117/12.698419; https://doi.org/10.1117/12.698419
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