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

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

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.

Original language	English
Pages (from-to)	283-297
Number of pages	15
Journal	European Physical Journal B
Volume	5
Issue number	2
DOIs	https://doi.org/10.1007/s100510050445
Publication status	Published - 1 Jan 1998
Externally published	Yes

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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10.1007/s100510050445

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

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.

KW - 42.70.Df Surface-tension-driven instability

KW - 47.20.Bp Buoyancy-driven instability

KW - 47.54.+r Pattern selection; pattern formation

U2 - 10.1007/s100510050445

DO - 10.1007/s100510050445

M3 - Article

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SN - 1434-6028

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EP - 297

JO - European Physical Journal B

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IS - 2

ER -

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

Abstract

Keywords

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