Spatio-temporal patterns in the thermoconvection of a planar nematic layer: II. Experiments

E. Plaut; L. Pastur; R. Ribotta

doi:10.1007/s100510050445

Spatio-temporal patterns in the thermoconvection of a planar nematic layer: II. Experiments

E. Plaut
, L. Pastur
, R. Ribotta

Laboratoire de Physique des Solides
University of Bayreuth

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

12 Citations (Scopus)

Résumé

We study experimentally the evolution of thermoconvection in a laterally extended planar nematic layer, at zero or weak stabilizing magnetic field. As the applied thermal gradient is increased, a cascade of symmetry breakings occurs, towards structures of increasing spatial complexity, and ultimately towards oscillating states. The patterns are characterized optically, and simple models for the distortion of the vertical (out of plane) component of the director field are proposed.

langue originale	Anglais
Pages (de - à)	283-297
Nombre de pages	15
journal	European Physical Journal B
Volume	5
Numéro de publication	2
Les DOIs	https://doi.org/10.1007/s100510050445
état	Publié - 1 janv. 1998
Modification externe	Oui

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10.1007/s100510050445

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abstract = "We study experimentally the evolution of thermoconvection in a laterally extended planar nematic layer, at zero or weak stabilizing magnetic field. As the applied thermal gradient is increased, a cascade of symmetry breakings occurs, towards structures of increasing spatial complexity, and ultimately towards oscillating states. The patterns are characterized optically, and simple models for the distortion of the vertical (out of plane) component of the director field are proposed.",

keywords = "42.70.Df Surface-tension-driven instability, 47.20.Bp Buoyancy-driven instability, 47.54.+r Pattern selection; pattern formation",

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AU - Ribotta, R.

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AB - We study experimentally the evolution of thermoconvection in a laterally extended planar nematic layer, at zero or weak stabilizing magnetic field. As the applied thermal gradient is increased, a cascade of symmetry breakings occurs, towards structures of increasing spatial complexity, and ultimately towards oscillating states. The patterns are characterized optically, and simple models for the distortion of the vertical (out of plane) component of the director field are proposed.

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KW - 47.20.Bp Buoyancy-driven instability

KW - 47.54.+r Pattern selection; pattern formation

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Spatio-temporal patterns in the thermoconvection of a planar nematic layer: II. Experiments

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