Density-functional theory for clustering of two-dimensional hard particle fluids

Fluids made of two-dimensional hard particles with polygonal shapes may stabilize symmetries which do not result directly from the particle shape. This is due to the formation of clusters in the fluid. Entropy alone can drive these effects, which represent a challenge for standard theories. In this...

Descripción completa

Detalles Bibliográficos
Autores: Martínez-Ratón, Yuri, Velasco Caravaca, Enrique
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/711226
Acceso en línea:http://hdl.handle.net/10486/711226
https://dx.doi.org/10.1016/j.molliq.2024.124044
Access Level:acceso abierto
Palabra clave:Association Theory
Density Functional Theory
Hard Rightt-Angles Triangles
Liquid Crystals
Virial Coefficients
Física
Descripción
Sumario:Fluids made of two-dimensional hard particles with polygonal shapes may stabilize symmetries which do not result directly from the particle shape. This is due to the formation of clusters in the fluid. Entropy alone can drive these effects, which represent a challenge for standard theories. In this article we present a general density-functional theory for clustering effects in fluids of hard particles in two dimensions. The theory combines a free-energy functional of the angular distribution function with an association energy term which qualitatively reproduces the clustering tendencies of the particles found in Monte Carlo simulations. Application is made to a fluid of hard right-angled triangles