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http://ir.ncue.edu.tw/ir/handle/987654321/15071
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| Title: | Second Harmonic Generation Studies of Polymer-Stabilized Cholesteric Texture Films |
| Authors: | Fuh, Andy Ying-Guey;Huang, Chi-Yen;Lau, Cheuk-Wah |
| Contributors: | 光電科技研究所 |
| Keywords: | Cholesteric liquid crystal;Second harmonic generation;Polymer network;Dielectric gradient;Focal conic |
| Date: | 1997-05
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| Issue Date: | 2013-01-07T02:09:51Z
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| Publisher: | The Japan Society of Applied Physics |
| Abstract: | Using a mode-locking Nd:YAG laser, we measured the second harmonic generation (SHG) of polymer-stabilized cholesteric texture (PSCT) films. The SHG observed in these samples is due to the dielectric gradient which arises from the interfaces between the cholesteric liquid crystal/polymer and those between the adjacent cholesteric focal conic domains having a different helical axis. Both the SHG intensities and the electro-optical characteristics of PSCT films were measured as a function of the polymer concentration. In addition, polymer network structures formed in PSCT films were investigated. Good correlations among the SHG measurements, electro-optical characteristics, and the polymer network morphologies were found. This means that SHG measurements could provide us with another qualitative, nondestructive method to analyze the PSCT films. |
| Relation: | Jpn. J. Appl. Phys., 36(5A): 2754-2759 |
| Appears in Collections: | [光電科技研究所] 期刊論文
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