Critical behaviour of microemulsions: Monte Carlo simulations of the Widom model

The critical behaviour of a lattice model for ternary mixtures of hydrophilic, hydrophobic and amphiphilic (surfactant) molecules is investigated by means of Monte Carlo simulations. A lattice model formulated by Widom as a simple approach of these mixtures is adopted taking advantage of its equival...

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Detalles Bibliográficos
Autores principales:	Bea, Edgar Alejandro, Trobo, Marta Liliana, De Virgiliis, Andrés
Formato:	Articulo Preprint
Lenguaje:	Inglés
Publicado:	2019
Materias:	Física Ternary mixture Lattice model Phase transition Monte Carlo simulation Finite size scaling
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/97111 https://ri.conicet.gov.ar/11336/93127
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-97111
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física Ternary mixture Lattice model Phase transition Monte Carlo simulation Finite size scaling
spellingShingle	Física Ternary mixture Lattice model Phase transition Monte Carlo simulation Finite size scaling Bea, Edgar Alejandro Trobo, Marta Liliana De Virgiliis, Andrés Critical behaviour of microemulsions: Monte Carlo simulations of the Widom model
topic_facet	Física Ternary mixture Lattice model Phase transition Monte Carlo simulation Finite size scaling
description	The critical behaviour of a lattice model for ternary mixtures of hydrophilic, hydrophobic and amphiphilic (surfactant) molecules is investigated by means of Monte Carlo simulations. A lattice model formulated by Widom as a simple approach of these mixtures is adopted taking advantage of its equivalence to a spin- 1/2 Ising model, which adds next nearest neighbors interactions on a simple cubic lattice. In this work we focus on the critical behaviour of the order-disorder phase transition of this model. A simulation strategy combining a standard Metropolis sampling and multiple histogram reweighting technique is used. The location of the phase boundary is well determined, being consistent with the 3D Ising critical temperature. In addition, a suitable finite size scaling analysis is performed to obtain critical amplitudes of magnitudes as magnetization, susceptibility and interfacial tension. The critical behaviour results compatible with the 3D Ising universality class, as expected. Likewise, critical amplitudes ratios give a reasonable agreement with the universal values obtained from different systems and methods.
format	Articulo Preprint
author	Bea, Edgar Alejandro Trobo, Marta Liliana De Virgiliis, Andrés
author_facet	Bea, Edgar Alejandro Trobo, Marta Liliana De Virgiliis, Andrés
author_sort	Bea, Edgar Alejandro
title	Critical behaviour of microemulsions: Monte Carlo simulations of the Widom model
title_short	Critical behaviour of microemulsions: Monte Carlo simulations of the Widom model
title_full	Critical behaviour of microemulsions: Monte Carlo simulations of the Widom model
title_fullStr	Critical behaviour of microemulsions: Monte Carlo simulations of the Widom model
title_full_unstemmed	Critical behaviour of microemulsions: Monte Carlo simulations of the Widom model
title_sort	critical behaviour of microemulsions: monte carlo simulations of the widom model
publishDate	2019
url	http://sedici.unlp.edu.ar/handle/10915/97111 https://ri.conicet.gov.ar/11336/93127
work_keys_str_mv	AT beaedgaralejandro criticalbehaviourofmicroemulsionsmontecarlosimulationsofthewidommodel AT trobomartaliliana criticalbehaviourofmicroemulsionsmontecarlosimulationsofthewidommodel AT devirgiliisandres criticalbehaviourofmicroemulsionsmontecarlosimulationsofthewidommodel
bdutipo_str	Repositorios
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Critical behaviour of microemulsions: Monte Carlo simulations of the Widom model

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