Dynamics of orientational fluctuations in a homeotropic Fréedericksz transition under a rotating magnetic field
We study the problem of the Fréedericksz transition under a rotating magnetic field by using a dynamical model which incorporates thermal fluctuations into the whole set of nematodynamic equations. In contrast to other geometries, nonuniform textures in the plane of the sample do not appear favored....
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 1988 |
| País: | España |
| Recursos: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/9429 |
| Acesso em linha: | https://hdl.handle.net/2445/9429 |
| Access Level: | acceso abierto |
| Palavra-chave: | Cristalls líquids Transformacions de fase (Física estadística) Liquid crystals Phase transformations (Statistical physics) |
| Resumo: | We study the problem of the Fréedericksz transition under a rotating magnetic field by using a dynamical model which incorporates thermal fluctuations into the whole set of nematodynamic equations. In contrast to other geometries, nonuniform textures in the plane of the sample do not appear favored. The proper consideration of thermal noise enables us to describe the dynamics of orientational fluctuations both below and above the shifted instability. |
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