C - Chemistry – Metallurgy – 30 – B
Patent
C - Chemistry, Metallurgy
30
B
C30B 31/04 (2006.01) B81C 1/00 (2006.01) C30B 11/00 (2006.01)
Patent
CA 2307481
A structure, e.g., a photonic band gap material, is provided exhibiting substantial periodicity on a micron scale, along with desirable density and mechanical integrity. A template comprising a colloidal crystal is provided, and into the interstitial space of the crystal is introduced a molten material. The introduction is typically performed and/or promoted by subjecting the crystal and molten material to a pressurized environment, which tends to force the molten material through the interstitial space of the crystal. The material is cooled, and the colloidal crystal particles are typically removed, e.g., by heating, etching, or dissolving. The resulting material constitutes a highly uniform, high-density structure, due to the invention's use of a continuous liquid phase to fill the void volume, as opposed to techniques that result in porosity and non-uniformities within the final structure.
Braun Paul Vannest
Wiltzius Pierre
Kirby Eades Gale Baker
Lucent Technologies Inc.
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