| Автор | José A Cuesta |
| Автор | Yuri Martínez-Ratón |
| Дата выпуска | 2000-02-28 |
| dc.description | The phase behaviour of very asymmetric binary mixtures can be understood in terms of the depletion interaction. For hard particles this yields a narrow deep attractive well surrounding the hard core. Colloids with similar interaction potentials are known to destabilize the liquid, causing it to show a wide fluid-solid coexistence, and in extreme cases they exhibit an exotic solid-solid condensation. For a mixture this means that phase separation is not fluid-fluid, as previously thought, but normally fluid-solid, and if the asymmetry is very large, even solid-solid. We present in this work the result of devising a density functional theory for an infinitely asymmetric mixture of parallel hard cubes. This model is singular and undergoes a collapse in a close-packed solid (an extreme fluid-solid demixing). We avoid this collapse by introducing a small amount of polydispersity in the large particles; the resulting phase diagram shows the fluid-solid and solid-solid demixing scenarios described above. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Phase behaviour of very asymmetric binary mixtures |
| Тип | paper |
| DOI | 10.1088/0953-8984/12/8A/311 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 12 |
| Первая страница | A109 |
| Последняя страница | A114 |
| Аффилиация | José A Cuesta; Grupo Interdisciplinar de Sistemas Complicados, Departamento de Matemáticas, Universidad Carlos III de Madrid, 28911-Leganés, Madrid, Spain |
| Аффилиация | Yuri Martínez-Ratón; Grupo Interdisciplinar de Sistemas Complicados, Departamento de Matemáticas, Universidad Carlos III de Madrid, 28911-Leganés, Madrid, Spain |
| Выпуск | 8A |
