This study presents an optically switchable band gap of a 3D photonic crystal that is based on an azobenzene-doped liquid crystal blue phase. The trans-cis photoisomerization of azobenzene was induced by irradiation using 473nm light, and caused the deformation of the cubic unit cell of the blue phase and a shift in the photonic band gap. The fast back-isomerization of azobenzene was induced by irradiation with 532nm light. The crystalline structure was verified using a Kossel diffraction diagram. An optically addressable blue phase display, based on Bragg reflection from the photonic band gap, is also demonstrated. It can be written, erased, and rewritten repeatedly and exhibits a bright saturated color.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0702110-144428 |
| Date | 02 July 2010 |
| Creators | Liu, Hu-Yi |
| Contributors | Andy Yin-Guey Fuh, Tsung-Hsien Lin, Wen-Jung Zheng, Shie-Chang Jeng |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0702110-144428 |
| Rights | not_available, Copyright information available at source archive |
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