Sahoo, Rasmita ; Ananthaiah, J. ; Dabrowski, R. ; Dhara, Surajit (2014) Rheology of twist-grain-boundary-liquid crystals Physical Review E - Statistical, Nonlinear and Soft Matter Physics, 90 (1). ISSN 1539-3755
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Official URL: https://doi.org/10.1103/PhysRevE.90.012506
Related URL: http://dx.doi.org/10.1103/PhysRevE.90.012506
Abstract
We report studies on the rheological properties of a liquid crystalline analog of Abrikosov phase in type-II superconductors known as twist-grain-boundary-A (TGBA) phase. The TGBA phase shows a large apparent yield stress compared to the cholesteric (N*) phase. The storage modulus (G′) of the TGBA phase is significantly larger than the loss modulus (G′′). The dynamic relaxation measurements indicate a solid-like behavior of N*, TGBA, and smectic-C* phases. The complex shear modulus of the TGBA phase exhibits a power-law behavior G*(w) ∼ wa with a≃0.5. The relative amplitude of G′ and G′′ at various temperatures indicate that the enhanced elasticity of TGBA phase is due to the structural defects.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 141443 |
| Deposited On: | 27 Nov 2025 08:29 |
| Last Modified: | 27 Nov 2025 08:29 |
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