Competition of periodic and homogeneous modes in extended dynamical systems

Year: 2002

Authors: Dressel B., Joets A., Pastur L., Pesch W., Plaut E., Ribotta R.

Autors Affiliation: Physikalisches Institut der Universität Bayreuth, D-95440 Bayreuth, Germany;
Laboratoire de Physique des Solides, Université Paris-Sud-CNRS, F-91405 Orsay cedex, France;
Istituto Nazionale di Ottica Applicata, Largo Fermi, 6, I-50125 Firenze, Italy;
LEMTA, INPL-UHP-CNRS, 2 avenue de la Forêt de Haye, F-54504 Vandœuvre cedex, France

Abstract: Despite their simple structure, spatially homogeneous modes can participate directly in pattern-formation processes. This is demonstrated by new experimental and theoretical results for thermo- and electroconvection in planar nematic liquid crystals, where two distinct homogeneous modes, twist and splay distortions of the director field, emerge. Their nonlinear excitation is due to certain spontaneous symmetry-breaking bifurcations.

Journal/Review: PHYSICAL REVIEW LETTERS

Volume: 88 (2)      Pages from: 24503-1  to: 24503-4

KeyWords: Convection; Electroconvection; Instability; Patterns; Layer
DOI: 10.1103/PhysRevLett.88.024503

Citations: 10
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