Non-isothermal model for the direct isotropic/smectic-A liquid crystalline transition

Details Non-isothermal model for the direct isotropic/smectic-A liquid crystalline transition Non-isothermal model for the direct isotropic/smectic-A liquid crystalline transition

2009-05-05

arxiv.org/abs/0905.0521v2

Langmuir. 25 (2009), 11923\^a?"11929

Physics

Condensed Matter

Soft Condensed Matter

First revision: 20 pages, 7 figures

Scientific paper

10.1021/la9015965

An extension to a high-order model for the direct isotropic/smectic-A liquid crystalline phase transition was derived to take into account thermal effects including anisotropic thermal diffusion and latent heat of phase-ordering. Multi-scale multi-transport simulations of the non-isothermal model were compared to isothermal simulation, showing that the presented model extension corrects the standard Landau-de Gennes prediction from constant growth to diffusion-limited growth, under shallow quench/undercooling conditions. Non-isothermal simulations, where meta-stable nematic pre-ordering precedes smectic-A growth, were also conducted and novel non-monotonic phase-transformation kinetics observed.

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