Bulk inhomogeneous phases of anisotropic particles: A fundamental measure functional study of the restricted orientations model
| Autor: | Yuri Martínez-Ratón |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2003 |
| Předmět: |
Physics
Condensed matter physics Matemáticas business.industry FOS: Physical sciences Prolate spheroid Condensed Matter - Soft Condensed Matter [PACS] Phase equilibria Measure (mathematics) [PACS] Transitions in liquid crystals Condensed Matter::Soft Condensed Matter Optics Liquid crystal [PACS] Theory and models of liquid structure Phase (matter) Oblate spheroid Soft Condensed Matter (cond-mat.soft) Anisotropic particles business Phase diagram |
| Zdroj: | e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid instname |
| Popis: | The phase diagram of prolate and oblate particles in the restricted orientations approximation (Zwanzig model) is calculated. Transitions to different inhomogeneous phases (smectic, columnar, oriented, or plastic solid) are studied through minimization of the fundamental measure functional (FMF) of hard parallelepipeds. The study of parallel hard cubes (PHC's) as a particular case is also included motivated by recent simulations of this system. As a result a rich phase behavior is obtained which include, apart from the usual liquid crystal phases, a very peculiar phase (called here discotic smectic) which was already found in the only existing simulation of the model, and which turns out to be stable because of the restrictions imposed on the orientations. The phase diagram is compared at a qualitative level with simulation results of other anisotropic particle systems. 11 pages, 10 figures |
| Databáze: | OpenAIRE |
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