Electro-Optical and Photo Stabilization Study of Nematic Ternary Mixture.

Electro-Optical and Photo Stabilization Study of Nematic Ternary Mixture.
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向列型三元混合物的电光和光稳定性研究。

DOI:
10.3390/ma14092283
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发表时间:
2021-04-28
期刊:
Materials (Basel, Switzerland)
影响因子:
--
通讯作者:
Kula P
Kula P
中科院分区:
其他
文献类型:
--
作者:
Kalbarczyk A;Bennis N;Herman J;Jaroszewicz LR;Kula P

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由混合的双嵌段化合物组成的液晶材料在液晶显示器和光子应用中具有广泛的用途。由三种不同的双金属化合物形成的三元混合物显示出特殊的行为,例如依赖于驱动电压的频率的可调谐电光特性。本文分析了一种频率可调的双折射液晶混合物(代号5005)的响应时间和相位延迟。该材料具有高双折射率(633 nm处Δn = 0.32)和高介电各向异性(100 Hz处Δε = 6.3)。5005混合物的独特性质是频率控制的相位调制,就像双频液晶一样,而介电各向异性在高频下变为零而不是负。对于混合物的每一个组成部分,详细的介晶性质和它们在混合物的配方中的作用的报告。5005混合物的特征在于多种调查技术,如温度依赖性介电各向异性,透射率测量图像偏振显微镜,和UV稳定性。
Liquid crystal materials composed of mixed nematic compounds find broad use in liquid crystal displays and photonic applications. A ternary mixture formed from three different nematic compounds shows peculiar behavior such as tunable electro-optical properties dependent on the frequency of the driving voltage. The paper presents an analysis of the response time and phase retardation of a frequency tunable nematic liquid crystal mixture (under code name 5005). This material possesses high birefringence (Δn = 0.32 at 633 nm) as well as high dielectric anisotropy (Δε = 6.3 at 100 Hz). The unique property of the 5005 mixture is frequency-controlled phase modulation, as in a dual frequency liquid crystal, while dielectric anisotropy goes to zero instead of being negative at high frequencies. For each component of the mixture, details on mesomorphic properties and their role in the formulation of the mixture are reported. The 5005 mixture was characterized by multiple investigation techniques, such as temperature dependence dielectric anisotropy, transmittance measurements image polarizing microscopy, and UV stability.
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