Unstable periodic structures in nematic liquid crystals



Título del documento: Unstable periodic structures in nematic liquid crystals
Revista: Brazilian journal of physics
Base de datos: PERIÓDICA
Número de sistema: 000146858
ISSN: 0103-9733
Autores: 1

Instituciones: 1Universidade Estadual de Maringa, Departamento de Física, Maringa, Parana. Brasil
2Universidade Estadual de Londrina, Londrina, Parana. Brasil
Año:
Periodo: Dic
Volumen: 28
Número: 4
Paginación: 348-358
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico
Resumen en inglés We present a review of our recent progress in the description of the elastic and dynamical properties of the unstable periodic (walls) arising in a nematic liquid crystal sample. The Lonberg criterion for the selection of the period of these walls is analyzed. We present a detailed study of the universal character of these walls, which is the basis for a law of corresponding states of these periodic structures. We show the connection of corresponding states with the constant ratio between the Miesowicz viscosity coefficients. Finally, the collapse of these structures is investigated. We show that it is due to the exponential growth of the fluctuations localized along the lines where the director does not bend at all
Disciplinas: Física y astronomía
Palabras clave: Física de materia condensada,
Cristales líquidos,
Nemáticos,
Patrones periódicos,
Criterio de Lonberg,
Paredes magnéticas
Keyword: Physics and astronomy,
Condensed matter physics,
Liquid crystals,
Nematics,
Periodic patterns,
Lonberg criterion,
Magnetic walls
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