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Start Over Author "SALÁN, J." Topic nonlinear systems
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1. Convective Instabilities in Homeotropic Nematics: Patterns and Dynamical Effects in Nonlinear Regimes.

Author

Bove, I., Salán, J., and Fernández, J.

Subjects
*THERMODYNAMICS, *NONLINEAR systems
Abstract

We present experimental results showing the convective patterns near to and far from the threshold in a horizontal film of Homeotropic Nematics subjected to an inverse vertical thermal gradient. Depending on the intensity of the applied external magnetic fields, two transitions are studied: square-hexagons and hexagon-square. In all cases, there is a coexistence of two kinds of pattern. The temporal evolution of structures was also observed, and so, mechanisms including this dynamic are proposed for the transitions between patterns. [ABSTRACT FROM AUTHOR]

Published
2001
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