Detecting secondary structure and surface orientation of helical peptide monolayers from resonant hybridization signals
SCIENTIFIC REPORTS(2013)
摘要
Hybridization of dominant vibrational modes with meta-surface resonance allows detection of both structural changes and surface orientations of bound helical peptides. Depending on the resonance frequency of meta-molecules, a red- or blue- shift in peptide Amide-I frequency is observed. The underlying coupling mechanism is described by using a temporal coupled mode theory that is in very good agreement with the experimental results. This hybridization phenomenon constitutes the basis of many nanophotonic systems such as tunable coupled mode bio-sensors and dynamic peptide systems driven by infrared signals.
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关键词
Applied physics,Infrared spectroscopy,Nanophotonics and plasmonics,Peptides,Science,Humanities and Social Sciences,multidisciplinary
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