ArticleProceedings of the National Academy of Sciences of the United States of America2020
Extremely small twist elastic constants in lyotropic nematic liquid crystals.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed.
- Sinusoidal Displacement Describes Disorder in CsPbBrACS nano · 2026Article
- Synthesis and Applications of Encapsulated Glycol-Stabilized Lyotropic Cholesteric Liquid Crystal Hydrogels.Gels (Basel, Switzerland) · 2025Article
- Aquatic Functional Liquid Crystals: Design, Functionalization, and Molecular Simulation.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- Flow-induced periodic chiral structures in an achiral nematic liquid crystal.Nature communications · 2024Article
- Structural Color from Cellulose Nanocrystals or Chitin Nanocrystals: Self-Assembly, Optics, and Applications.Chemical reviews · 2023Review
- Article
- Shape and structural relaxation of colloidal tactoids.Nature communications · 2022Article
- Electric-field induced modulation of amorphous protein aggregates: polarization, deformation, and reorientation.Scientific reports · 2022Article
- Extremely small twist elastic constants in lyotropic nematic liquid crystals.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
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Abstract
Recent measurements of the elastic constants in lyotropic chromonic liquid crystals (LCLCs) have revealed an anomalously small twist elastic constant compared to the splay and bend constants. Interestingly, measurements of the elastic constants in the micellar lyotropic liquid crystals (LLCs) that are formed by surfactants, by far the most ubiquitous and studied class of LLCs, are extremely rare and report only the ratios of elastic constants and do not include the twist elastic constant. By means of light scattering, this study presents absolute values of the elastic constants and their corresponding viscosities for the nematic phase of a standard LLC composed of disk-shaped micelles. Very different elastic moduli are found. While the splay elastic constant is in the typical range of 1.5 pN as is true in general for thermotropic nematics, the twist elastic constant is found to be one order of magnitude smaller (0.30 pN) and almost two orders of magnitude smaller than the bend elastic constant (21 pN). These results demonstrate that a small twist elastic constant is not restricted to the special case of LCLCs, but is true for LLCs in general. The reason for this extremely small twist elastic constant very likely originates with the flexibility of the assemblies that are the building blocks of both micellar and chromonic lyotropic liquid crystals.
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