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首页> 外文期刊>The European physical journal, E. Soft matter >Experimental study of de Vries properties in antiferroelectric smectic liquid crystals
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Experimental study of de Vries properties in antiferroelectric smectic liquid crystals

机译:反铁电层列液晶的de Vries性质的实验研究

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摘要

Results of the experimental study on different antiferroelectric liquid crystal (AFLC) materials are presented using a number of techniques such as the optical birefringence, electro-optics and the measurements of optical thickness of free-standing films. Despite differences in the molecular structures of the various AFLC materials studied, these are found to exhibit a de Vries type of smecticA* (SmA*) properties in a temperature range higher than SmC*. This correlation leads to the conclusion that these two classes of liquid crystals are related to each other. Furthermore, we suggest that these arise from the same physical mechanism, namely the existence of the weak synclinic ( or reduced anticlinic) correlations between the neighbouring molecular tilt directions.
机译:使用多种技术(例如光学双折射,电光学和自立膜的光学厚度的测量)介绍了不同反铁电液晶(AFLC)材料的实验研究结果。尽管所研究的各种AFLC材料的分子结构有所不同,但发现它们在高于SmC *的温度范围内仍表现出de Vries型的smecticA *(SmA *)特性。这种相关性得出这样的结论,即这两类液晶是相互关联的。此外,我们认为这些是由于相同的物理机制引起的,即在相邻分子倾斜方向之间存在弱的斜斜相关性(或降低的抗斜度)。

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