Optical properties of ordered macroporous materials made by colloidal assembly

J. D. Thorne, D. J. Pine, G. Subramanian

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Periodic macroporous silicon dioxide and titanium dioxide were made using monodisperse polystyrene as templates and ultrafine metal oxide particles as the surrounding high dielectric material. The process involves slowly drying a monodisperse polystyrene dispersion with a colloidal dispersion of the desired oxide. As the mixture is drying, the polystyrene spheres organize themselves in an ordered lattice and the oxide particles pack into the voids between the spheres. Subsequent removal of the polystyrene by heat treatment leads to an ordered macroporous material with the oxide particles forming the walls of the pores. Optically, these materials exhibit a strong iridescence in reflected light. Optical reflectivity measurements were made to prove the existence of band gaps in the material.

Original languageEnglish (US)
Title of host publicationPacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest
PublisherIEEE
Pages183
Number of pages1
StatePublished - 2000
EventConference on Lasers and Electro-Optics (CLEO 2000) - San Francisco, CA, USA
Duration: May 7 2000May 12 2000

Other

OtherConference on Lasers and Electro-Optics (CLEO 2000)
CitySan Francisco, CA, USA
Period5/7/005/12/00

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Thorne, J. D., Pine, D. J., & Subramanian, G. (2000). Optical properties of ordered macroporous materials made by colloidal assembly. In Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest (pp. 183). IEEE.