Observation of the photorefractive effects in bent-core liquid crystals.
Observation of the photorefractive effects in bent-core liquid crystals.
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DOI：
10.1364/oe.21.003434
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发表时间：
2013-02
期刊：
影响因子：
3.8
通讯作者：
Y. Xiang;Yikun Liu;Zhi‐Yong Zhang;Hong-Jun You;Tian Xia;Everett Wang;Zhengdong Cheng
中科院分区：
文献类型：
--
作者：
Y. Xiang;Yikun Liu;Zhi‐Yong Zhang;Hong-Jun You;Tian Xia;Everett Wang;Zhengdong Cheng
本文报道了双芯双折射（BCN）液晶（LC）材料中光折变（PR）效应的新观察结果，并对纯BCN和表面掺杂BCN系统中的两种光致光栅进行了比较。实验结果表明，这两种光栅分别表现出明显不同的偏振相关和角度相关特性。此外，我们还提供了纯的和表面掺杂的棒状液晶体系作为比较，结果表明，BCN的V形分子结构比棒状分子结构更能有效地产生电荷载流子。因此，BCN材料可以提供一个令人兴奋的潜在的光学信息处理。
We present a new observation of photorefractive (PR) effects in bent-core nematic (BCN) liquid crystal (LC) materials, where two kinds of optical-induced gratings are demonstrated and compared in pure and surface-doped BCN systems. The experimental results showed that these two kinds of gratings exhibit distinctive different polarization-dependent and angular-dependent behaviors, respectively. Furthermore, we supplied the pure and surface-doped rodlike LC systems for comparison, which revealed that V shape molecular structure of BCN can produce charge carrier more efficiently than rodlike molecular structure does. Thus BCN materials can offer an exciting potential for optical information processing.