Pattern formation at the nematic smectic-B interface

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Free growth properties of the smectic B liquid crystalline phase into the supercooled nematic have been investigated in quasi-twodimensional geometry. Different orientation combinations of the two phases have been achieved experimentally and the interfacial patterns have been studied and analysed as a function of undercooling. The angular dependence of the surface tension has been deduced from the shape of the interface in thermal equilibrium. The experimentally determined surface tension anisotropy has been incorporated into computer simulations based on the phase-field model. The simulations have reproduced qualitatively the rich variety of morphologies observed in the experiments for a given set of undercoolings in three geometries. Anisotropic heat diffusion on the nematic side, relevant to our experimental system has also been introduced. Both in the experiments and in the simulations we find that the growth is faster in the lower heat diffusion direction.

Original languageEnglish
Pages (from-to)175-208
Number of pages34
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume339
Publication statusPublished - 2000

Fingerprint

supercooling
interfacial tension
Undercooling
heat
Surface tension
geometry
Geometry
simulation
computerized simulation
anisotropy
Anisotropy
liquids
Experiments
Crystalline materials
Computer simulation
Liquids
Hot Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

@article{2efe847e757743448927a8b2004e3436,
title = "Pattern formation at the nematic smectic-B interface",
abstract = "Free growth properties of the smectic B liquid crystalline phase into the supercooled nematic have been investigated in quasi-twodimensional geometry. Different orientation combinations of the two phases have been achieved experimentally and the interfacial patterns have been studied and analysed as a function of undercooling. The angular dependence of the surface tension has been deduced from the shape of the interface in thermal equilibrium. The experimentally determined surface tension anisotropy has been incorporated into computer simulations based on the phase-field model. The simulations have reproduced qualitatively the rich variety of morphologies observed in the experiments for a given set of undercoolings in three geometries. Anisotropic heat diffusion on the nematic side, relevant to our experimental system has also been introduced. Both in the experiments and in the simulations we find that the growth is faster in the lower heat diffusion direction.",
author = "T. T{\'o}th-Katona and T. B{\"o}rzs{\"o}nyi and A. Buka",
year = "2000",
language = "English",
volume = "339",
pages = "175--208",
journal = "Molecular Crystals and Liquid Crystals",
issn = "0026-8941",
publisher = "Taylor and Francis Ltd.",

}

TY - JOUR

T1 - Pattern formation at the nematic smectic-B interface

AU - Tóth-Katona, T.

AU - Börzsönyi, T.

AU - Buka, A.

PY - 2000

Y1 - 2000

N2 - Free growth properties of the smectic B liquid crystalline phase into the supercooled nematic have been investigated in quasi-twodimensional geometry. Different orientation combinations of the two phases have been achieved experimentally and the interfacial patterns have been studied and analysed as a function of undercooling. The angular dependence of the surface tension has been deduced from the shape of the interface in thermal equilibrium. The experimentally determined surface tension anisotropy has been incorporated into computer simulations based on the phase-field model. The simulations have reproduced qualitatively the rich variety of morphologies observed in the experiments for a given set of undercoolings in three geometries. Anisotropic heat diffusion on the nematic side, relevant to our experimental system has also been introduced. Both in the experiments and in the simulations we find that the growth is faster in the lower heat diffusion direction.

AB - Free growth properties of the smectic B liquid crystalline phase into the supercooled nematic have been investigated in quasi-twodimensional geometry. Different orientation combinations of the two phases have been achieved experimentally and the interfacial patterns have been studied and analysed as a function of undercooling. The angular dependence of the surface tension has been deduced from the shape of the interface in thermal equilibrium. The experimentally determined surface tension anisotropy has been incorporated into computer simulations based on the phase-field model. The simulations have reproduced qualitatively the rich variety of morphologies observed in the experiments for a given set of undercoolings in three geometries. Anisotropic heat diffusion on the nematic side, relevant to our experimental system has also been introduced. Both in the experiments and in the simulations we find that the growth is faster in the lower heat diffusion direction.

UR - http://www.scopus.com/inward/record.url?scp=0033751910&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033751910&partnerID=8YFLogxK

M3 - Article

VL - 339

SP - 175

EP - 208

JO - Molecular Crystals and Liquid Crystals

JF - Molecular Crystals and Liquid Crystals

SN - 0026-8941

ER -