Fabrication of self-assembled photonic-crystal structures by centrifugation and spin coating

Yan Xu; Garrett J. Schneider; Eric D. Wetzel; Dennis W. Prather

doi:10.1117/12.506337

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3 November 2003 Fabrication of self-assembled photonic-crystal structures by centrifugation and spin coating

Yan Xu, Garrett J. Schneider, Eric D. Wetzel, Dennis W. Prather

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Proceedings Volume 5183, Lithographic and Micromachining Techniques for Optical Component Fabrication II; (2003) https://doi.org/10.1117/12.506337
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

We have developed a simple, low-cost process for the fabrication of high-quality three-dimensional artificial-opal and inverse-opal photonic crystals. The process is based on the self-assembly of a template from a uniform suspension of polystyrene microspheres, which is sintered for added strength and subsequently back-filled with high-index material. The template formation is assisted by a combination of centrifugation and spin-annealing, which requires relatively short process times and inexpensive laboratory equipment. The process has been used to fabricate polycrystalline photonic crystals with photonic stop gaps in the mid-IR portion of the spectrum. Details of the fabrication process and fabricated samples will be presented. In addition, Fourier-transform IR reflection spectroscopy has been used to characterize the samples; the results are shown to be in excellent agreement with band structure diffraction calculations.

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Yan Xu, Garrett J. Schneider, Eric D. Wetzel, and Dennis W. Prather "Fabrication of self-assembled photonic-crystal structures by centrifugation and spin coating", Proc. SPIE 5183, Lithographic and Micromachining Techniques for Optical Component Fabrication II, (3 November 2003); https://doi.org/10.1117/12.506337

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