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dc.contributor.authorChen, Ben_US
dc.contributor.authorKollosche, Men_US
dc.contributor.authorStewart, Men_US
dc.contributor.authorBusfield, Jen_US
dc.contributor.authorCarpi, Fen_US
dc.date.accessioned2016-04-11T15:00:27Z
dc.date.issued2015-10-02en_US
dc.date.submitted2016-03-21T07:44:05.441Z
dc.identifier.issn1947-5411en_US
dc.identifier.urihttp://qmro.qmul.ac.uk/xmlui/handle/123456789/11765
dc.description.abstract© 2016 The Author(s). Dielectric elastomers are widely investigated as soft electromechanically active polymers (EAPs) for actuators, stretch/force sensors, and mechanical energy harvesters to generate electricity. Although the performance of such devices is limited by the dielectric strength of the constitutive material, the electrical breakdown of soft elastomers for electromechanical transduction is still scarcely studied. Here, we describe a custom-made setup to measure electrical breakdown of soft EAPs, and we present data for a widely studied acrylic elastomer (VHB 4905 from 3M). The elastomer was electrically stimulated via a planar and a hemispherical metal electrode. The breakdown was characterized under different conditions to investigate the effects of the radius of curvature and applied force of the hemispherical electrode. With a given radius of curvature, the breakdown field increased by about 50% for a nearly 10-fold increase of the applied mechanical stress, while with a given mechanical stress the breakdown field increased by about 20% for an approximately twofold increase of the radius of curvature. These results indicate that the breakdown field is highly dependent on the boundary conditions, suggesting the need for reporting breakdown data always in close association with the measurement conditions. These findings might help future investigations in elucidating the ultimate breakdown mechanism/s of soft elastomers.en_US
dc.format.extent290 - 303en_US
dc.relation.ispartofInternational Journal of Smart and Nano Materialsen_US
dc.rights© 2016 The Author(s). Published by Taylor & Francis. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Permission is granted subject to the terms of the License under which the work was published. Please check the License conditions for the work which you wish to reuse. Full and appropriate attribution must be given. This permission does not cover any third party copyrighted material which may appear in the work requested.
dc.titleElectrical breakdown of an acrylic dielectric elastomer: Effects of hemispherical probing electrodes size and forceen_US
dc.typeArticle
dc.identifier.doi10.1080/19475411.2015.1130974en_US
pubs.issue4en_US
pubs.notesNot knownen_US
pubs.publication-statusPublisheden_US
pubs.volume6en_US


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