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Pattern formation during mesophase growth in a homologous series
Tóth-Katona, T.; Börzsönyi, T.; Váradi, Z.; Szabon, J.; Buka, Agnes; González Cinca, Ricard; Ramírez Piscina, Laureano; Casademunt i Viader, Jaume; Hernández Machado, Aurora
Universitat de Barcelona
Remarkable differences in the shape of the nematic-smectic-B interface in a quasi-two-dimensional geometry have been experimentally observed in three liquid crystals of very similar molecular structure, i.e., neighboring members of a homologous series. In the thermal equilibrium of the two mesophases a faceted rectanglelike shape was observed with considerably different shape anisotropies for the three homologs. Various morphologies such as dendritic, dendriticlike, and faceted shapes of the rapidly growing smectic-B germ were also observed for the three substances. Experimental results were compared with computer simulations based on the phase field model. The pattern forming behavior of a binary mixture of two homologs was also studied.
26-07-2011
Cristal·lografia
Sòlids
Líquids
Equacions d'estat
Transformacions de fase (Física estadística)
Interfícies (Ciències físiques)
Ciència de materials
Crystallography
Solids
Liquids
Equations of state
Phase transformations (Statistical physics)
Interfaces (Physical sciences)
Materials science
(c) The American Physical Society, 1996
Artículo
The American Physical Society
         

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