The evolution of the dielectric constant in various polymers subjected to uniaxial stretch
- Creators
- Cohen, Noy
- Oren, Shai Shalom
- deBotton, Gal
Abstract
Dielectric elastomers (DEs) are materials that deform in response to electric excitation, an attractive feature that deems them suitable for various actuation-based devices. The growing interest in these materials leads to many intriguing questions regarding the origin of the electro-mechanical coupling and its relation to the dielectric constant. This work examines the coupled response of four dielectrics: VHB 4910, Polytetrauoroethylene (PTFE), High-density polyethylene (HDPE) and Low-density polyethylene (LDPE). We demonstrate the substantial dependence of their dielectric constants on the deformations. These findings are compared to a recent statistical-mechanics based model which takes into account the structure of the dielectric. A good agreement is found between the theoretical model and the experimental measurements.
Additional Information
© 2017 Elsevier Ltd.Additional details
- Eprint ID
- 80645
- Resolver ID
- CaltechAUTHORS:20170821-134234260
- Created
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2017-08-21Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field