Abstract
A nanowire-mediated surface plasmon resonance (SPR) imaging is numerically
investigated for enhanced sensitivity. The results calculated by rigorous
coupled-wave analysis present that interplays between localized surface plasmons
and surface plasmon polaritons contribute to sensitivity enhancement. Compared
to conventional thin film-based SPR imaging measurement, an optimal nanowire
structure can provide sensitivity enhancement by 3.44 times as well as highly
linear detection property for quantification of surface reactions of interests.
This paper demonstrates the potential and limitation for a highly sensitive,
label-free, and real-time SPR imaging sensor based on periodic metallic nanowires.
© 2008 IEEE
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