Metasurface with metallic nanoantennas and graphene nanoslits for sensing of protein monolayers and sub-monolayers
M Ye, KB Crozier
Optics Express | OSA - Optical Society of America | Published : 2020
Biomolecule sensing plays an important role in both fundamental biological studies and medical diagnostic applications. Infrared (IR) spectroscopy presents opportunities for sensing biomolecules as it allows their fingerprints to be determined by directly measuring their absorption spectra. However, the detection of biomolecules at low concentrations is difficult with conventional IR spectroscopy due to signal-to-noise considerations. This has led to recent interest on the use of nanostructured surfaces to boost the signals from biomolecules in a method termed surface enhanced infrared spectroscopy. So far, efforts have largely involved the use of metallic nanoantennas (which produce large f..View full abstract
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Awarded by Australian Research Council
Awarded by Defense Advanced Research Projects Agency
Defense Advanced Research Projects Agency (HR0011-16-1-0004); Australian Research Council (DP180104141, FT140100577).