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Surface-enhanced Raman scattering on diatom biosilica photonic crystals

TitleSurface-enhanced Raman scattering on diatom biosilica photonic crystals
Publication TypeConference Paper
Year of Publication2013
AuthorsRen, F., J. Campbell, D. Hasan, X. Wang, G. L. Rorrer, and A. X. Wang
Conference NameSPIE BiOSBioinspired, Biointegrated, Bioengineered Photonic Devices
Pagination85980N - 85980N-8
Date Published02/2013
PublisherSPIE
Conference LocationSan Francisco, California
Abstract

Diatoms are a group of single-celled photosynthetic algae that make skeletal shells of hydrated amorphous silica, called frustules, which possess hierarchical nanoscale photonic crystal features made by a bottom-up approach at ambient temperature and pressure. In this paper, we theoretically investigate electric field enhancements of plasmonic nanoparticles coated on the surface of diatom skeletal shells. Surface-Enhanced Raman Scattering substrates are prepared by evaporating 10 nm thick silver film and self-assembling silver nanoparticles on diatom surfaces, which show significantly better SERS signals than silver nanoparticles on flat glass substrates.

DOI10.1117/12.2009375