Electrode interface polarization formation in dielectric elastomer actuators

Iannarelli, A.; Ghaffarian Niasar, M.; Ross, Robert

doi:10.1016/j.sna.2020.111992

Electrode interface polarization formation in dielectric elastomer actuators

Title

Electrode interface polarization formation in dielectric elastomer actuators

Author

Iannarelli, A. (TU Delft DC systems, Energy conversion & Storage)
Ghaffarian Niasar, M. (TU Delft DC systems, Energy conversion & Storage)
Ross, Robert (TU Delft DC systems, Energy conversion & Storage)

Date

2020-09-01

Abstract

Dielectric elastomer actuators (DEAs) are a class of electrostatic actuators that have promising applications in fields like sensors, soft-robotics, microfluidics, and energy harvesting. The crucial points in the working principle of DEA are the application of high electric field and the use of compliant electrodes. These electrodes are typically composed of a mixture of a soft polymer base filled with highly conductive particles. In this work, we show that the charged impurities, possibly present in the electrodes composite, in combination with a high electric field can cause the formation of polarization interface layers between the electrodes and the inner dielectric. These layers can, in the long term, diminish the actuation performance of the DEA.

Subject

DIelectric elastomer actuators
Dielectric spectroscopy
Electroactive polymers
Electrode polarization
Interface polarization
Reliability
Space charges

To reference this document use:

http://resolver.tudelft.nl/uuid:f169f355-d087-47ab-930a-c3de15d8dff7

DOI

https://doi.org/10.1016/j.sna.2020.111992

ISSN

0924-4247

Source

Sensors and Actuators A: Physical: an international journal devoted to research and development of physical and chemical transducers, 312

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