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Updated: Apr 19, 2026

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
Published on: September 26, 2014
Liquid-impermeable inverse opals with invariant photonic bandgap
Hyelim Kang1, Joon-Seok Lee, Won Seok Chang
1Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST, Daejeon, 305-701, South Korea.
Abstract:
Omniphobic inverse opals are created by structurally and chemically modifying the surface of inverse opals through reactive ion etching. During the etching, void arrays of the inverse opal surface evolves to a triangular post array with re-entrant geometry. The elaborate structure can efficiently pin the air-liquid interface and retain air cavities against water and oil, thereby providing liquid-impermeable inverse opals with invariant photonic bandgap.
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