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

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

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.

Citation Download Citation

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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