Biologically inspired biophotonic surfaces with self-antireflection for highly sensitive biosensing and bioimaging are reported. The effective index of large-area glass nanopillar arrays spontaneously meets an antireflection condition when a solution with diverse index surrounds the nanopillars. The bio-inspired biophotonic surfaces enable not only highly intense fluorescence or surface enhanced Raman scattering but also high contrast imaging due to the self-antireflection.
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Oh et al. (2014) studied this question.
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