Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/7019
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Applied Physics | - |
dc.creator | Lam, CH | - |
dc.creator | Tsui, OKC | - |
dc.date.accessioned | 2014-12-11T08:26:57Z | - |
dc.date.available | 2014-12-11T08:26:57Z | - |
dc.identifier.issn | 1539-3755 | - |
dc.identifier.uri | http://hdl.handle.net/10397/7019 | - |
dc.language.iso | en | en_US |
dc.publisher | American Physical Society | en_US |
dc.rights | Physical Review E © 2013 The American Physical Society. The Journal's web site is located at http://pre.aps.org/ | en_US |
dc.subject | Glass | en_US |
dc.subject | Laminar flow | en_US |
dc.subject | Molecular dynamics | en_US |
dc.subject | Semiconducting films | en_US |
dc.title | Crossover to surface flow in supercooled unentangled polymer films | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 1 | - |
dc.identifier.epage | 6 | - |
dc.identifier.volume | 88 | - |
dc.identifier.issue | 4 | - |
dc.identifier.doi | 10.1103/PhysRevE.88.042604 | - |
dcterms.abstract | We study the driven flow of an unentangled glassy polymer film with a free upper surface and supported below by a substrate using nonequilibrium molecular dynamics simulations based on a bead-spring model. Above the glass transition temperature T [subscript g] , simple Poiseuille laminar flow is observed with the film mobility defined as the flow current density per unit pressure gradient scaling as h³ with the film thickness h . Below T [subscript g] , the film mobility becomes independent of h , signifying surface transport. This is in full agreement with recent experiments on the time evolution of capillary waves in polystyrene films supported by silica. A mobile layer is found responsible for the surface transport, as previously conjectured. Our result also shows that it has a velocity profile decaying exponentially into the bulk. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Physical review. E, Statistical, nonlinear, and soft matter physics, Oct. 2013, v. 88, no. 4, 042604, p. 1-6 | - |
dcterms.isPartOf | Physical review. E, Statistical, nonlinear, and soft matter physics | - |
dcterms.issued | 2013-10 | - |
dc.identifier.isi | WOS:000326112300002 | - |
dc.identifier.scopus | 2-s2.0-84886707880 | - |
dc.identifier.eissn | 1550-2376 | - |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | OA_IR/PIRA | en_US |
dc.description.pubStatus | Published | en_US |
dc.description.oaCategory | VoR allowed | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Lam_Crossover_Supercooled_Film.pdf | 1.11 MB | Adobe PDF | View/Open |
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