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18 April 2022 Characterization of charge retention effects in HASEL actuators
Ellen Rumley, Philipp Rothemund, Steven Zhang, Nicholas Kellaris, Christoph Keplinger
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Proceedings Volume PC12042, Electroactive Polymer Actuators and Devices (EAPAD) XXIV; PC120420B (2022) https://doi.org/10.1117/12.2612817
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States
Abstract
Hydraulically amplified self-healing electrostatic (HASEL) actuators offer mechanical performance suitable for soft robotics and wearable devices. Strain decrease associated with sustained DC voltage application (DCV), however, remains a challenge. Here we discuss the role of charge retention (CR) in the actuation behavior of linearly contracting Peano HASELs under different voltage conditions and material compositions. We then discuss techniques for measuring dielectric absorption of different material combinations used to fabricate HASELs and discuss their relationship to CR. Selection of material combinations significantly impacts CR and is crucial to consider for HASELs and other devices driven by electrostatic forces.
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Ellen Rumley, Philipp Rothemund, Steven Zhang, Nicholas Kellaris, and Christoph Keplinger "Characterization of charge retention effects in HASEL actuators", Proc. SPIE PC12042, Electroactive Polymer Actuators and Devices (EAPAD) XXIV, PC120420B (18 April 2022); https://doi.org/10.1117/12.2612817
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KEYWORDS
Actuators
Chromium
Electromechanical design
Absorption
Capacitors
Composites
Dielectrics
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