| Автор | P A Kralchevsky |
| Автор | N D Denkov |
| Автор | V N Paunov |
| Автор | O D Velev |
| Автор | I B Ivanov |
| Автор | H Yoshimura |
| Автор | K Nagayama |
| Дата выпуска | 1994-06-06 |
| dc.description | When two similar small particles are attached to a liquid interface they attract each other due to a lateral capillary force. This force appears because the gravitational potential energy of the floating particles decreases when they are approaching each other. This force is proportional to R<sup>6</sup> (R is the particle radius), so it decreases very fast with particle size and becomes negligible for R<10 mu m. We found that the situation is quite different when the particles (instead of being freely floating) are partially immersed in a liquid layer on a substrate. In this case the energy of capillary attraction is proportional to R<sup>2</sup> and turns out to be much larger than kT even with particles of diameter about 10 nm. The effect is related to the particle three-phase contact angle, i.e. to the intermolecular forces, rather than to gravity. The experiments show that the lateral capillary forces can bring about the formation of a two-dimensional array (2D-crystal) from both micrometre-size and submicrometre particles: latex spheres, protein globules, etc. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Formation of two-dimensional colloid crystals in liquid films under the action of capillary forces |
| Тип | paper |
| DOI | 10.1088/0953-8984/6/23A/065 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 6 |
| Первая страница | A395 |
| Последняя страница | A402 |
| Аффилиация | P A Kralchevsky; Lab. of Thermodynamics & Physico-Chem. Hydrodynamics, Sofia Univ., Bulgaria |
| Аффилиация | N D Denkov; Lab. of Thermodynamics & Physico-Chem. Hydrodynamics, Sofia Univ., Bulgaria |
| Аффилиация | V N Paunov; Lab. of Thermodynamics & Physico-Chem. Hydrodynamics, Sofia Univ., Bulgaria |
| Аффилиация | O D Velev; Lab. of Thermodynamics & Physico-Chem. Hydrodynamics, Sofia Univ., Bulgaria |
| Аффилиация | I B Ivanov; Lab. of Thermodynamics & Physico-Chem. Hydrodynamics, Sofia Univ., Bulgaria |
| Аффилиация | H Yoshimura; Lab. of Thermodynamics & Physico-Chem. Hydrodynamics, Sofia Univ., Bulgaria |
| Аффилиация | K Nagayama; Lab. of Thermodynamics & Physico-Chem. Hydrodynamics, Sofia Univ., Bulgaria |
| Выпуск | 23A |
