Dimer-based three-dimensional photonic crystals

Ian D. Hosein, Stephanie H. Lee, Chekesha M. Liddell

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

The self-assembly of polystyrene dimer- and spherocylinder-shaped colloids is achieved via controlled drying on glass and silicon substrates. 3D monoclinic colloidal crystal structures are determined from scanning electron microscopy images of sections prepared using focused ion-beam (FIB) milling. Full photonic bandgaps between the eighth and ninth bands are found for a systematic range of colloidal dimer shapes explored with respect to the degree of constituent lobe fusion and radius ratio. The pseudogap between bands 2 and 3 for spherocylinder-based monoclinic crystals is also probed using normal incidence reflection spectroscopy.

Original languageEnglish (US)
Pages (from-to)3085-3091
Number of pages7
JournalAdvanced Functional Materials
Volume20
Issue number18
DOIs
StatePublished - Sep 23 2010
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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