Silicon-based surface plasmon resonance sensing with two surface plasmon polariton modes

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TypeArticle
Journal titleApplied Optics
Volume42
Issue34
Pages69056909; # of pages: 5
Subjectenv; Surface Plasmon Resonance
AbstractSurface plasmon resonance (SPR) sensing on a silicon-based platform is considered. We have studied properties of SPR in a combined silicon-dielectric layer-gold film-sample medium structure and established conditions of the simultaneous excitation of two plasmon polariton modes that provide narrow and well-separated minima of the reflected intensity. It has been shown that the external mode over the gold-sample medium interface demonstrates a highly sensitive response to a change in the refractive index of the sample medium, whereas the internal mode over the dielectric-gold interface is almost insensitive to medium parameters. We propose that the internal mode can be used as an effective reference zero point for miniature and portable SPR-based systems designed for field and multichannel sensing.
Publication date
AffiliationNRC Biotechnology Research Institute; National Research Council Canada
Peer reviewedNo
NRC number45943
NPARC number3538758
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Record identifier0c659f4c-7e22-4d3a-8d30-14768dec1b8a
Record created2009-03-01
Record modified2016-05-09
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