Self-assembled free-standing colloidal crystals

Chia Hua Chan, Chii Chang Chen, Chih Kai Huang, Wei Hsiang Weng, Hung Sen Wei, Hui Chen, Hsiao Tsung Lin, Hsiang Szu Chang, Wen Yen Chen, Wen Hao Chang, Tzu Min Hsu

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


We propose a novel technique to fabricate a free-standing three-dimensional colloidal crystal by self-assembling the colloidal microspheres with controllable thickness from the air-liquid interface. Highly ordered three-dimensional colloidal crystals are formed by polymethylmethacrylate or polystyrene monodisperse microspheres. We also demonstrate the fabrication technique of the free-standing inversed opals by removing the microspheres using calcination. The free-standing colloidal crystal structures can be used for nano-photonic circuits, white-light LEDs or as a photocatalyst.

Original languageEnglish
Pages (from-to)1440-1444
Number of pages5
Issue number9
StatePublished - 1 Sep 2005


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