Conformally Back-Filled, Non-close-packed Inverse-Opal Photonic Crystals


  • This work was supported by the U.S. Army Research Office contract DAAD19-01-1-0603.


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Topological tuning of photonic crystals significantly changes their photonic-band properties. Significant modification of inverse opal topology by heat treatment and a two-step atomic layer deposition infiltration process is demonstrated, facilitating precise control and tuning of photonic-band properties. The figure shows topologies at different degrees of backfilling.