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

TitleStructure-based optical filtering by the silica microshell of the centric marine diatom Coscinodiscus wailesii
Publication TypeJournal Article
Year of Publication2014
AuthorsKieu K., Li C., Fang Y., Cohoon G., Herrera O.D, Hildebrand M, Sandhage K.H, Norwood R.A
JournalOptics Express
Volume22
Pagination15992-15999
Date Published2014/06
Type of ArticleArticle
ISBN Number1094-4087
Accession NumberWOS:000338055900082
Keywords3d; dispersion; photonic crystal fibers; shapes
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 mu m diameter) spot. The C. wailesii frustule valve, which possessed a quasi-periodic hexagonal pore array, exhibited position-dependent optical diffraction. Changes in such diffraction behavior across the frustule were consistent with observed variations in the quasi-periodic pore pattern. (C)2014 Optical Society of America

DOI10.1364/oe.22.015992
Short TitleOpt. Express
Integrated Research Themes: 
Student Publication: 
No