Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/17855
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Phase behavior of the hard-sphere Maier-Saupe fluid under spatial confinement

AuthorsAlmarza, Noé G. CSIC ORCID; Martín, C. CSIC; Lomba, Enrique CSIC ORCID CVN
KeywordsMonte Carlo
Liquid Crystals
Maier-Saupe
Issue Date3-Sep-2009
PublisherAmerican Physical Society
CitationPhys. Rev. E 80, 031501 (2009)
AbstractThe Maier-Saupe hard-sphere fluid is one of the simplest models that accounts for the isotropic-nematic transition characteristic of liquid crystal phases. At low temperatures the model is known to present a gas-liquid-like transition with a large difference between the densities of the coexistence phases, whereas at higher temperature the transition becomes a weak first-order transition resembling the typical order-disorder (nematic-isotropic) phase change of liquid crystals. Spatial dimensionality directly conditions the character of the orientational phase change (i.e., the high temperature transition), that goes from a first-order transition in the purely three-dimensional case, to a Berezinskii-Kosterlitz-Thouless-like continuous transition which occurs when the three dimensional Maier-Saupe spins are constrained to lie on a plane. In the latter instance, the ordered phase is not endowed with true long-range order. In this work we investigate how the continuous transition transforms into a true first-order phase change, by analyzing the phase behavior of a system of three dimensional Maier-Saupe hard spheres confined between two parallel plates, with separations ranging from the quasi-two-dimensional regime to the bulk three-dimensional limit. Our results indicate that spatial confinement in one direction induces the change from first order to a continuous transition with a corresponding decrease of the transition temperatures. As to the gas-liquid transition, the estimated “critical” temperatures and densities also decrease as the fluid is confined, in agreement with previous results for other simple systems.
Publisher version (URL)http://link.aps.org/doi/10.1103/PhysRevE.80.031501
URIhttp://hdl.handle.net/10261/17855
DOI10.1103/PhysRevE.80.031501
Appears in Collections:(IQFR) Artículos




Files in This Item:
File Description SizeFormat
GetPDFServlet.pdf1,01 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work

SCOPUSTM   
Citations

4
checked on May 22, 2022

WEB OF SCIENCETM
Citations

4
checked on May 24, 2022

Page view(s)

267
checked on May 26, 2022

Download(s)

185
checked on May 26, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.