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High field ion mobi...
High field ion mobility in dielectric polymers : A molecular dynamics study of water in poly(dimethylsiloxane)
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- Unge, Mikael (författare)
- KTH,Fiber- och polymerteknologi,ABB Corporate Research, Västerås, Sweden
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Jämbeck, J. (författare)
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(creator_code:org_t)
- Institute of Electrical Engineers of Japan, 2017
- 2017
- Engelska.
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Ingår i: Proceedings of the International Symposium on Electrical Insulating Materials. - : Institute of Electrical Engineers of Japan. - 9784886860996 ; , s. 467-469
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.2...
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Abstract
Ämnesord
Stäng
- Detailed understanding of charge transport phenomena in dielectrics is important in order to understand the influence of chemical composition on the dielectric properties. Material simulation methods such as density functional theory (DFT) and molecular dynamics (MD) can be used to calculate basic properties of the material. Here we focus on mobility of ions at high fields by applying MD simulations. In a recent study of ionic mobility in polyethylene, it was shown that ion mobility starts to deviate from the Einstein relation at high fields, resulting in a linear increase of the mobility [1]. We argue that this is due to conformational change of the surrounding polymers through elastic scattering which facilitates and thus accelerates the charged molecule. Here we investigate this effect of water in poly(dimethylsiloxane) (PDMS).
Ämnesord
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Nyckelord
- High electric field
- Ion mobility
- Molecular dynamics
- Polymer insulation
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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