DC Field | Value | Language |
---|---|---|
dc.contributor.author | Han, Young-Kyu | ko |
dc.contributor.author | Kim, Mahn-Won | ko |
dc.date.accessioned | 2013-03-13T00:31:06Z | - |
dc.date.available | 2013-03-13T00:31:06Z | - |
dc.date.created | 2012-10-09 | - |
dc.date.created | 2012-10-09 | - |
dc.date.issued | 2012-09 | - |
dc.identifier.citation | SOFT MATTER, v.8, no.34, pp.9015 - 9021 | - |
dc.identifier.issn | 1744-683X | - |
dc.identifier.uri | http://hdl.handle.net/10203/104007 | - |
dc.description.abstract | Particle shape is one of the major parameters governing the structure in hard-particle systems. A 2D-dumbbell, which consists of a pair of binary disks connected to each other, has two geometrical characteristics: the existence of a bond and asymmetry due to a size difference. We investigate the effects of the geometry of 2D-dumbbells on the packing structure at an air-water interface under short-range attractions, varying the area fraction phi of the particles. We observe that although the systems at low phi exhibit the characteristic structure of attractive particle systems, the short-range attraction between the particles due to capillary interaction does not affect the local structure at the maximally random jammed (MRJ) packing fraction. We investigate the influence of a rigid bond on the packing structure by comparing 2D-dumbbell systems with binary-disk systems; we also investigate the effects of asymmetry by controlling the diameter ratio (gamma) of the small and large disks of the dumbbell. First, we find that the existence of a bond restricts local segregations between similar kinds of disks, so that phase-separated glass states are forbidden, contrary to the case of binary-disk systems. Second, we observe that varying gamma causes a structural order-disorder-order change at high phi. While the crystalline structures of disks (gamma = 0) and symmetric dimers (gamma = 1) are similar in local contacting and ordering behaviors despite their shape differences, the amorphous structures of asymmetric dimers (gamma = 0.3, 0.5, and 0.7) exhibit distinct features depending on gamma. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | BINARY DISK MIXTURES | - |
dc.subject | COLLOIDAL DIMERS | - |
dc.subject | HARD-SPHERE | - |
dc.subject | PACKINGS | - |
dc.subject | TRANSITION | - |
dc.subject | ANISOTROPY | - |
dc.subject | PARTICLES | - |
dc.subject | KEPLER | - |
dc.subject | FILMS | - |
dc.title | Effect of bond and asymmetry of 2D-dumbbells on their structure in high concentration regime | - |
dc.type | Article | - |
dc.identifier.wosid | 000307306800027 | - |
dc.identifier.scopusid | 2-s2.0-84865165941 | - |
dc.type.rims | ART | - |
dc.citation.volume | 8 | - |
dc.citation.issue | 34 | - |
dc.citation.beginningpage | 9015 | - |
dc.citation.endingpage | 9021 | - |
dc.citation.publicationname | SOFT MATTER | - |
dc.identifier.doi | 10.1039/c2sm26437d | - |
dc.contributor.localauthor | Kim, Mahn-Won | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | BINARY DISK MIXTURES | - |
dc.subject.keywordPlus | COLLOIDAL DIMERS | - |
dc.subject.keywordPlus | HARD-SPHERE | - |
dc.subject.keywordPlus | PACKINGS | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | ANISOTROPY | - |
dc.subject.keywordPlus | PARTICLES | - |
dc.subject.keywordPlus | KEPLER | - |
dc.subject.keywordPlus | FILMS | - |
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