Nematic-isotropic transition in a density-functional theory for hard spheroidal colloids

Autor(es)

Nascimento, E. S.

• Tipo de documento: Artigo Científico
• Fonte: EUROPEAN PHYSICAL JOURNAL E; v. 41, n. 11 NOV 26 2018.
• Citações Web of Science: 0

Resumo

We introduce a density-functional formalism based on the Parsons-Lee and the generalized van der Waals theories in order to describe the thermodynamics of anisotropic particle systems with steric interactions. For ellipsoids of revolution, the orientational distribution function is obtained by minimizing the free energy functional and the equations of state are determined. The system exhibits a nematic-isotropic discontinuous transition, characterized by a phase separation between nematic and isotropic phases at finite as well low packing fractions. The model presents a phase behavior which is in good agreement with Monte Carlo simulations for finite aspect ratios. (AU)

• Processo FAPESP: 16/07448-5 - Transições de fases num sistema de partículas coloidais não-esféricas em altas densidades
• Beneficiário: Eduardo dos Santos Nascimento
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 13/12873-9 - Modelos microscópicos para cristais líquidos nemáticos biaxiais
• Beneficiário: Eduardo dos Santos Nascimento
• Modalidade de apoio: Bolsas no Brasil - Doutorado