Pattern formation induced by an electric field in a polymer-air-polymer thin film system

Show simple item record Amarandei, George Beltrame, Philippe Clancy, Ian O'Dwyer, Colm Arshak, Arousian Steiner, Ullrich Corcoran, David Thiele, Uwe 2018-05-28T14:32:09Z 2018-05-28T14:32:09Z 2012-05-10
dc.identifier.citation Amarandei, G., Beltrame, P., Clancy, I., O'Dwyer, C., Arshak, A., Steiner, U., Corcoran, D. and Thiele, U. (2012) 'Pattern formation induced by an electric field in a polymer-air-polymer thin film system', Soft Matter, 8(23), pp. 6333-6349. doi: 10.1039/C2SM25273B en
dc.identifier.volume 8 en
dc.identifier.startpage 6333 en
dc.identifier.endpage 6349 en
dc.identifier.issn 1744-683X
dc.identifier.doi 10.1039/C2SM25273B
dc.description.abstract Strong electric fields produce forces that can overcome the surface tension in thin liquid polymer films and in this way induce an instability of the free surface of the film, that triggers the formation of structures on a micrometer length scale. Here, we study experimentally a polymer-air-polymer system for several combinations of polymer films. These results are accompanied by theoretical considerations based on coupled long-wave time evolution equations for the two free surface profiles. The linear stability and nonlinear time evolution are investigated and compared to the experimental findings. The prediction that the instability always evolves through a mirror mode that couples the two surfaces in an anti-phase manner agrees well with the experimental results. The model describes well the linear (early stage) evolution of the instability. In the non-linear (later stage) evolution, topographical differences in the instability pattern occur if the mobilities of the two layers significantly differ and an unpredicted acceleration of growth is seen in thinner less mobile films. Possible reasons for the mismatch are discussed. en
dc.description.sponsorship Science Foundation Ireland (NAP 200); European Commission (MRTN-CT-2004005728 (PATTERNS)) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Royal Society of Chemistry (RSC) en
dc.rights © Royal Society of Chemistry 2018 en
dc.subject Polymers en
dc.subject Boundary layer flow en
dc.subject Electric fields en
dc.subject Polymer films en
dc.subject Stability en
dc.subject Surface tension en
dc.subject Free surfaces en
dc.subject Linear stability en
dc.subject Micrometer lengths en
dc.subject Pattern formation en
dc.subject Strong electric fields en
dc.subject Thin film systemsThin liquidsTime evolution equationsTime evolutions en
dc.subject Thin film systems en
dc.subject Thin liquids en
dc.subject Time evolution equations en
dc.subject Time evolutions en
dc.title Pattern formation induced by an electric field in a polymer-air-polymer thin film system en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Colm O'Dwyer, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.availability Full text available en 2018-05-28T14:07:19Z
dc.description.version Accepted Version en
dc.internal.rssid 162343063
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Seventh Framework Programme en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Soft Matter en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress en
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP3::PEOPLE/239426/EU/Control and Application of Field Induced Polymer Patterns/POLYPATT en
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP3::PEOPLE/214919/EU/MULTI-SCALE COMPLEX FLUID FLOWS and INTERFACIAL PHENOMENA/MULTIFLOW en

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