Acta Optica Sinica, Volume. 31, Issue 1, 131005(2011)
Piezo-Optical Effect of Polymer Dispersed Liquid Crystal Films
It is reported that polymer dispersed liquid crystal (PDLC) films are transparency when pressed, and it is called piezo-optical effect of PDLC films. The concepts of stressed liquid crystal, sheared liquid crystal and stretched liquid crystal for PDLC films are described respectively. The pictures of piezo-optical effect, polarized photographs of PDLC films, spectral analysis of electro-optical property and spectral analysis of piezo-optical effect are given. The principle of piezo-optical effect of PDLC films is also proposed, which believes that only if liquid crystal molecules in each micro-droplet are well orientated, the PDLC films will show transparency, no matter liquid crystal molecules in different droplets are well orientated or not. The piezo-optical effect of PDLC films poses questions to basic sciences of liquid crystal and may be applied in a lot of new press-optical applications without electricity (press-windows, functional glass, optical fiber press sensor, etc.).
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Fan Zhixin, Xie Yijun, Wei Xiangdong, Xie Huijie, Song Xinhua, Wang Dan, Sun Yubao. Piezo-Optical Effect of Polymer Dispersed Liquid Crystal Films[J]. Acta Optica Sinica, 2011, 31(1): 131005
Category: Thin Films
Received: May. 10, 2010
Accepted: --
Published Online: Dec. 31, 2010
The Author Email: Zhixin Fan (zxfan@hebut.edu.cn)