Structure-based optical filtering by the silica microshell of the centric marine diatom Coscinodiscus wailesii

Khanh Q Kieu, C. Li, Y. Fang, G. Cohoon, O. D. Herrera, M. Hildebrand, K. H. Sandhage, Robert A Norwood

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Diatoms are a renewable (biologically reproducible) source of three-dimensional (3-D) nanostructured silica that could be attractive for a variety of photonic devices, owing to the wide range of quasi-periodic patterns of nano-to-microscale pores available on the silica microshells (frustules) of various diatom species. We have investigated the optical behavior of the silica frustule of a centric marine diatom, Coscinodiscus wailesii, using a coherent broadband (400-1700 nm) supercontinuum laser focused to a fine (20 μm diameter) spot. The C. wailesii frustule valve, which possessed a quasi-periodic hexagonal pore array, exhibited positiondependent optical diffraction. Changes in such diffraction behavior across the frustule were consistent with observed variations in the quasi-periodic pore pattern.

Original languageEnglish (US)
Pages (from-to)15992-15999
Number of pages8
JournalOptics Express
Volume22
Issue number13
DOIs
StatePublished - Jun 30 2014

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algae
silicon dioxide
porosity
diffraction
microbalances
photonics
broadband
lasers

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Structure-based optical filtering by the silica microshell of the centric marine diatom Coscinodiscus wailesii. / Kieu, Khanh Q; Li, C.; Fang, Y.; Cohoon, G.; Herrera, O. D.; Hildebrand, M.; Sandhage, K. H.; Norwood, Robert A.

In: Optics Express, Vol. 22, No. 13, 30.06.2014, p. 15992-15999.

Research output: Contribution to journalArticle

Kieu, Khanh Q ; Li, C. ; Fang, Y. ; Cohoon, G. ; Herrera, O. D. ; Hildebrand, M. ; Sandhage, K. H. ; Norwood, Robert A. / Structure-based optical filtering by the silica microshell of the centric marine diatom Coscinodiscus wailesii. In: Optics Express. 2014 ; Vol. 22, No. 13. pp. 15992-15999.
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