9 April 2010 Materials science on the nano-scale for improvements in actuation properties of dielectric elastomer actuators
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Abstract
We discuss various approaches to increasing the dielectric constant of elastomer materials, for use in dielectric elastomer actuators. High permittivity metal-oxide nano-particles can show elevated impact compared to larger size particles, but suffer from water uptake. Composites with conducting particles lead to extremely high permittivity caused by percolation, but they often suffer early breakdown. We present experiments on approaches combining metal-oxides and metal particles, which compensate for the drawbacks, and may lead to useful DEA materials in which all relevant properties are technologically useful. The key seems to be to avoid percolation and achieve a constant nearest-neighbor separation.
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G. Kofod, G. Kofod, D. N. McCarthy, D. N. McCarthy, H. Stoyanov, H. Stoyanov, M. Kollosche, M. Kollosche, S. Risse, S. Risse, H. Ragusch, H. Ragusch, D. Rychkov, D. Rychkov, M. Dansachmüller, M. Dansachmüller, R. Waché, R. Waché, } "Materials science on the nano-scale for improvements in actuation properties of dielectric elastomer actuators", Proc. SPIE 7642, Electroactive Polymer Actuators and Devices (EAPAD) 2010, 76420J (9 April 2010); doi: 10.1117/12.847281; https://doi.org/10.1117/12.847281
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