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Fluctuations of the tensor order-parameter modes in a cholesteric liquid crystal | | M A Pantea
; P H Keyes
; | | Date: |
28 Feb 2005 | | Journal: | Phys Rev E, 71 (3 Pt 1), 031707 | | Abstract: | We use a Landau-de Gennes free energy to calculate the fluctuations of the five independent modes of the tensor order parameter for a cholesteric liquid crystal. Our results include, as a limiting case, the two classical director modes, known as the twist mode and the "umbrella" mode. We find, however, in contrast to the classical director model, that there can be substantial temperature dependence to the umbrella mode, as well as three additional modes near the transition to the isotropic phase. We comment on a recent experiment that suggests that two of these additional modes may have already been detected. | | Source: | PubMed, pmid15903447 | | Services: | Forum | Review | Favorites | |
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