Laboratoire Léon Brillouin

UMR12 CEA-CNRS

Bât. 563 CEA Saclay

91191 Gif sur Yvette Cedex

France

llb-sec@cea.fr

Anisotropic quenched disorder effects on a liquid crystal confined into nanochannels
R. Guégan1, R. Lefort1, M. Guendouz2, I. Mirebeau3 and D. Morineau1 logo_tutelle logo_tutelle 

Top view of the porous silicon wafer (left). Side view of the porous layer by scanning electron microscopic (right).

1Groupe Matière Condensée et Matériaux, UMR-CNRS 6626, Université de Rennes 1, 35042 Rennes, France
2 Laboratoire d’Optronique, FOTON, UMR-CNRS 6082, 22302 Lannion, France
3 Laboratoire Léon Brillouin (CEA-CNRS), CEA . Saclay, 91191 Gif-sur-Yvette Cedex

 Anisotropic quenched disorder effects on a liquid crystal confined into nanochannels
Intense experimental and theoretical efforts have focused on quenched disorder effects in condensed matter as they bring about some most challenging questions of modern statistical physics. Most universal features of quenched disorder effects can be envisaged in the frame of random field theories. From this standpoint, liquid-crystals (LC) confined in random porous materials are definitively recognized as paradigm systems, which allows one to address experimentally general questions on phase transitions, critical scaling and non-ergodicity in the presence of quenched random fields. (More...)

 

Maj : 12/05/2007 (832)

 

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