Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/3822
Título: Self-assembly in chains, rings, and branches: a single component system with two critical points
Autor: Rovigatti, Lorenzo
Tavares, José Maria
Sciortino, Francesco
Palavras-chave: Directional Attractive Forces
Dipolar Hard-Spheres
Associating Fluids
Data: 14-Out-2013
Editora: Amer Physical SOC
Citação: ROVIGATTI, Lorenzo; TAVARES, José Maria; SCIORTINO, Francesco - Self-Assembly in Chains, Rings, and Branches: A Single Component System with Two Critical Points. Physical Review Letters. Vol. 111, nr. 16 (2013).
Relatório da Série N.º: 168302
Resumo: We study the interplay between phase separation and self-assembly in chains, rings, and branched structures in a model of particles with dissimilar patches. We extend Wertheim's first order perturbation theory to include the effects of ring formation and to theoretically investigate the thermodynamics of the model. We find a peculiar shape for the vapor-liquid coexistence, featuring reentrant behavior in both phases and two critical points, despite the single-component nature of the system. The emergence of the lower critical point is caused by the self-assembly of rings taking place in the vapor, generating a phase with lower energy and lower entropy than the liquid. Monte Carlo simulations of the same model fully support these unconventional theoretical predictions.
Descrição: Agências financiadoras: FCT - PEstOE/FIS/UI0618/2011; PTDC/FIS/098254/2008 ERC-PATCHYCOLLOIDS e MIUR-PRIN
Peer review: yes
URI: http://hdl.handle.net/10400.21/3822
DOI: 10.1103/PhysRevLett.111.168302
ISSN: 0031-9007
Versão do Editor: http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.111.168302
Aparece nas colecções:ISEL - Física - Artigos

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