Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.11851/6576
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Vianna, S. D. B. | - |
dc.contributor.author | Lin, F. Y. | - |
dc.contributor.author | Plum, M. A. | - |
dc.contributor.author | Duran, H. | - |
dc.contributor.author | Steffen, W. | - |
dc.date.accessioned | 2021-09-11T15:42:54Z | - |
dc.date.available | 2021-09-11T15:42:54Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0021-9606 | - |
dc.identifier.issn | 1089-7690 | - |
dc.identifier.uri | https://doi.org/10.1063/1.4983487 | - |
dc.identifier.uri | https://hdl.handle.net/20.500.11851/6576 | - |
dc.description.abstract | Using non-invasive, marker-free resonance enhanced dynamic light scattering, the dynamics of capillary waves on ultrathin polystyrene films' coupling to the viscoelastic and mechanical properties have been studied. The dynamics of ultrathin polymer films is still debated. In particular the question of what influence either the solid substrate and/or the fluid-gas interface has on the dynamics and the mechanical properties of films of glass forming liquids as polymers is in the focus of the present research. As a consequence, e.g., viscosity close to interfaces and thus the average viscosity of very thin films are prone to change. This study is focused on atactic, non-entangled polystyrene thin films on the gold surface. A slow dynamic mode was observed with Vogel-Fulcher-Tammann temperature dependence, slowing down with decreasing film thickness. We tentatively attribute this relaxation mode to overdamped capillary waves because of its temperature dependence and the dispersion with a wave vector which was found. No signs of a more mobile layer at the air/polymer interface or of a "dead layer" at the solid/polymer interface were found. Therefore we investigated the influence of an artificially created dead layer on the capillary wave dynamics by introducing covalently bound polystyrene polymer brushes as anchors. The dynamics was slowed down to a degree more than expected from theoretical work on the increase of density close to the solid liquid interface-instead of a "dead layer" of 2 nm, the interaction seems to extend more than 10 nm into the polymer. Published by AIP Publishing. | en_US |
dc.description.sponsorship | DFGGerman Research Foundation (DFG)European Commission [SPP 1369, Ra 796/5, BU 1556/31-1] | en_US |
dc.description.sponsorship | Financial support by DFG within the SPP 1369 "Polymer-Solid Contacts: Interfaces and Interphases" (Project Nos. Ra 796/5 and BU 1556/31-1) is gratefully acknowledged. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Amer Inst Physics | en_US |
dc.relation.ispartof | Journal of Chemical Physics | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | [No Keywords] | en_US |
dc.title | Dynamics of Ultra-Thin Polystyrene With and Without a (artificial) Dead Layer Studied by Resonance Enhanced Dynamic Light Scattering | en_US |
dc.type | Article | en_US |
dc.department | Faculties, Faculty of Engineering, Department of Material Science and Nanotechnology Engineering | en_US |
dc.department | Fakülteler, Mühendislik Fakültesi, Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü | tr_TR |
dc.identifier.volume | 146 | en_US |
dc.identifier.issue | 20 | en_US |
dc.authorid | 0000-0001-6540-0660 | - |
dc.authorid | 0000-0001-6203-3906 | - |
dc.authorid | 0000-0001-6203-3906 | - |
dc.identifier.wos | WOS:000401778900035 | en_US |
dc.identifier.scopus | 2-s2.0-85019644015 | en_US |
dc.institutionauthor | Duran Durmuş, Hatice | - |
dc.identifier.pmid | 28571376 | en_US |
dc.identifier.doi | 10.1063/1.4983487 | - |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.identifier.scopusquality | Q1 | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.grantfulltext | none | - |
item.fulltext | No Fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
Appears in Collections: | Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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