Winding up dynamics for matched and unmatched elastic constants in chiral nematic liquid crystals.

IF 2.9 3区 化学 Q3 CHEMISTRY, PHYSICAL
Soft Matter Pub Date : 2025-07-04 DOI:10.1039/d5sm00373c
Eric Khoudi Omori, Renato Ferreira de Souza, Rodolfo Teixeira de Souza, Rafael Soares Zola
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引用次数: 0

Abstract

Recently discovered materials have opened up the possibility of easily and repeatably altering the ratio among the elastic constants characterizing nematic liquid crystals. These ratios are crucial for defining the pathways for the relaxation process from the unwound state to the Grandjean (planar) state in chiral nematics. In this study, we use the Landau-de Gennes method in the Q-tensor formalism to investigate this textural transition for different bend-to-twist ratios representing nematic phases that are currently easily prepared. We also examine the effect of varying alignment conditions and strength on this transition and make qualitative comparisons with experimental data. This work demonstrates how the dynamics are entirely different under small changes in the material and the confinement and how one can use its results to design reflective chiral nematic displays.

手性向列液晶中匹配和不匹配弹性常数的动力学研究。
最近发现的材料使向列液晶的弹性常数之间的比值容易且可重复地改变成为可能。这些比率对于定义手性向列中从解绕态到平面态的弛豫过程的路径至关重要。在这项研究中,我们使用q -张量形式中的Landau-de Gennes方法来研究目前容易制备的代表向列相的不同弯扭比的这种纹理转变。我们还研究了不同的对准条件和强度对这种转变的影响,并与实验数据进行了定性比较。这项工作展示了在材料和约束的微小变化下动力学是如何完全不同的,以及如何利用其结果来设计反射性手性向列显示。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Soft Matter
Soft Matter 工程技术-材料科学:综合
CiteScore
6.00
自引率
5.90%
发文量
891
审稿时长
1.9 months
期刊介绍: Soft Matter is an international journal published by the Royal Society of Chemistry using Engineering-Materials Science: A Synthesis as its research focus. It publishes original research articles, review articles, and synthesis articles related to this field, reporting the latest discoveries in the relevant theoretical, practical, and applied disciplines in a timely manner, and aims to promote the rapid exchange of scientific information in this subject area. The journal is an open access journal. The journal is an open access journal and has not been placed on the alert list in the last three years.
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