Modell-folyadekkristäly ok fäzisegyensülyainak vizsgälataA külsö ter es a diszperziös vonzäs hatäsa

Translated title of the contribution: Theoretical study of the phase diagrams of model liquid crystalsThe effect of the external field and the spherical attraction

Research output: Contribution to journalArticle

Abstract

We have studied the phase diagrams of the system of hard ellipsoids in special circumstances based on the Parsons-Lee theory. In the applied external field, we have found that zero field isotropic-nematic phase transition is replaced by a weakly ordered nematic-nematic phase equilibrium. The increasing strength of external field shifts the phase transition in the direction of lower densities and narrows the density gap ending the first order transition at a critical point. The phase diagrams of the hard ellipsoids in a round hole potential are very varied, besides the usual vapour-liquid-nematic transitions we have located a nematic-nematic phase coexistence as well. The results of the theory show good agreement with the correspondig simulation data.

Original languageHungarian
Pages (from-to)21-30
Number of pages10
JournalMagyar Kemiai Folyoirat, Kemiai Kozlemenyek
Volume106
Issue number1
Publication statusPublished - 2000

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Phase diagrams
Phase transitions
Liquids
Phase equilibria
Vapors
Direction compound

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

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title = "Modell-folyadekkrist{\"a}ly ok f{\"a}zisegyens{\"u}lyainak vizsg{\"a}lataA k{\"u}ls{\"o} ter es a diszperzi{\"o}s vonz{\"a}s hat{\"a}sa",
abstract = "We have studied the phase diagrams of the system of hard ellipsoids in special circumstances based on the Parsons-Lee theory. In the applied external field, we have found that zero field isotropic-nematic phase transition is replaced by a weakly ordered nematic-nematic phase equilibrium. The increasing strength of external field shifts the phase transition in the direction of lower densities and narrows the density gap ending the first order transition at a critical point. The phase diagrams of the hard ellipsoids in a round hole potential are very varied, besides the usual vapour-liquid-nematic transitions we have located a nematic-nematic phase coexistence as well. The results of the theory show good agreement with the correspondig simulation data.",
author = "S. Varga and I. Szalai",
year = "2000",
language = "Hungarian",
volume = "106",
pages = "21--30",
journal = "Magyar Kemiai Folyoirat, Kemiai Kozlemenyek",
issn = "1418-9933",
publisher = "Magyar Kemikusok Egyesulete/Hungarian Chemical Society",
number = "1",

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T1 - Modell-folyadekkristäly ok fäzisegyensülyainak vizsgälataA külsö ter es a diszperziös vonzäs hatäsa

AU - Varga, S.

AU - Szalai, I.

PY - 2000

Y1 - 2000

N2 - We have studied the phase diagrams of the system of hard ellipsoids in special circumstances based on the Parsons-Lee theory. In the applied external field, we have found that zero field isotropic-nematic phase transition is replaced by a weakly ordered nematic-nematic phase equilibrium. The increasing strength of external field shifts the phase transition in the direction of lower densities and narrows the density gap ending the first order transition at a critical point. The phase diagrams of the hard ellipsoids in a round hole potential are very varied, besides the usual vapour-liquid-nematic transitions we have located a nematic-nematic phase coexistence as well. The results of the theory show good agreement with the correspondig simulation data.

AB - We have studied the phase diagrams of the system of hard ellipsoids in special circumstances based on the Parsons-Lee theory. In the applied external field, we have found that zero field isotropic-nematic phase transition is replaced by a weakly ordered nematic-nematic phase equilibrium. The increasing strength of external field shifts the phase transition in the direction of lower densities and narrows the density gap ending the first order transition at a critical point. The phase diagrams of the hard ellipsoids in a round hole potential are very varied, besides the usual vapour-liquid-nematic transitions we have located a nematic-nematic phase coexistence as well. The results of the theory show good agreement with the correspondig simulation data.

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