This study investigates the cholesteric grating based on a hybrid alignment. The experiment results reveal that the ordered stripe of the hybridly aligned cholesteric grating (H-fingerprint) only exists for the d/p ratio between 1.5 and 3, and the stripe orientation of the H-fingerprint is difficult to control due to the variation of the d/p ratio. Optical properties of the H-fingerprint are also investigated. The results show that the 1st order diffraction efficiency of the H-fingerprint is higher than the diffraction efficiency 2nd order, and its two switching times are about 1500ms and 500ms for the off-time and the on-time, respectively.
The H-fingerprint with an anti-parallel rubbing process and the thermal effect are also investigated. The results reveal that the anti-parallel rubbing and the thermal effect can effectively control the stripe orientation of the H-fingerprint. The results greatly increase the possibility of applications for the H-fingerprint.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0907109-182912 |
| Date | 07 September 2009 |
| Creators | Chiang, Ru-hsien |
| Contributors | Chi-Huang Lin, Chie-Tong Kuo, Andy Y. -G. Fuh, Chi-Yen Huang |
| 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-0907109-182912 |
| Rights | not_available, Copyright information available at source archive |
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