Strong collective attraction in colloidal clusters on a liquid-air interface
DC Field | Value | Language |
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dc.contributor.author | Pergamenshchik, V. M. | - |
dc.date.accessioned | 2021-09-08T21:12:10Z | - |
dc.date.available | 2021-09-08T21:12:10Z | - |
dc.date.created | 2021-06-10 | - |
dc.date.issued | 2009-01 | - |
dc.identifier.issn | 1539-3755 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/120857 | - |
dc.description.abstract | It is shown that in a cluster of many colloids, trapped at a liquid-air interface, the well-known vertical-force-induced pairwise logarithmic attraction changes to a strongly enhanced power-law attraction. In large two-dimensional clusters, the attraction energy scales as the inverse square of the distance between colloids. The enhancement is given by the ratio eta=(square of the capillary length)/(interface surface area per colloid) and can be as large as 10(5). This explains why a very small vertical force on colloids, which is too weak to bring two of them together, can stabilize many-body structures on a liquid-air interface. The profile of a cluster is shown to consist of a large slow collective envelope modulated by a fast low-amplitude perturbation due to individual colloids. A closed equation for the slow envelope, which incorporates an arbitrary power-law repulsion between colloids, is derived. For example, this equation is solved for a large circular cluster with the hard-core colloid repulsion. It is suggested that the predicted effect is responsible for mysterious stabilization of colloidal structures observed in experiments on a surface of isotropic liquid and nematic liquid crystal. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Strong collective attraction in colloidal clusters on a liquid-air interface | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Pergamenshchik, V. M. | - |
dc.identifier.doi | 10.1103/PhysRevE.79.011407 | - |
dc.identifier.scopusid | 2-s2.0-60949099031 | - |
dc.identifier.wosid | 000262976600048 | - |
dc.identifier.bibliographicCitation | PHYSICAL REVIEW E, v.79, no.1 | - |
dc.relation.isPartOf | PHYSICAL REVIEW E | - |
dc.citation.title | PHYSICAL REVIEW E | - |
dc.citation.volume | 79 | - |
dc.citation.number | 1 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Physics, Fluids & Plasmas | - |
dc.relation.journalWebOfScienceCategory | Physics, Mathematical | - |
dc.subject.keywordAuthor | colloids | - |
dc.subject.keywordAuthor | interface phenomena | - |
dc.subject.keywordAuthor | nematic liquid crystals | - |
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