Empty liquid state and self-assembly of high valence non-spherical colloidal systems

S. Varga, E. Meneses-Juárez, G. Odriozola

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A vapour-liquid phase coexistence with vanishing critical volume fraction (empty liquid) is predicted in some model systems of attractive hard ellipsoids. The trends in critical density and temperature do not depend on the ellipsoid shape and the range of the square-well attraction. Our theoretical and simulation studies show transparently that the empty liquid limit is due to the competition between the anisotropic attractive and repulsive interactions. Additionally, the nematic phase is destabilized by the square-well attraction for both prolate and oblate shapes. The demand to maximize the number of bonds while keeping a relatively low excluded volume leads to special structures such as the cubatic and star-shaped cluster phases at low temperatures. The liquid branch of the vapour-liquid binodal is always isotropic for oblates, while it can be isotropic or cluster-like for prolates. Our results predict the occurrence of an empty liquid state in high valence anisotropic colloidal systems.

Original languageEnglish
Pages (from-to)11178-11182
Number of pages5
JournalSoft Matter
Volume9
Issue number47
DOIs
Publication statusPublished - Dec 21 2013

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Self assembly
self assembly
valence
Liquids
liquids
Phosmet
square wells
ellipsoids
attraction
vapors
Vapors
liquid phases
Stars
occurrences
Volume fraction
trends
stars
Temperature
simulation
interactions

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics

Cite this

Empty liquid state and self-assembly of high valence non-spherical colloidal systems. / Varga, S.; Meneses-Juárez, E.; Odriozola, G.

In: Soft Matter, Vol. 9, No. 47, 21.12.2013, p. 11178-11182.

Research output: Contribution to journalArticle

Varga, S. ; Meneses-Juárez, E. ; Odriozola, G. / Empty liquid state and self-assembly of high valence non-spherical colloidal systems. In: Soft Matter. 2013 ; Vol. 9, No. 47. pp. 11178-11182.
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