The University of Bristol has created electrostatic actuators that it claims can lift 1,000 times their own weight, contract by 99.8% of their length, and deliver specific energy and specific power equivalent to muscle. They use pure electrostatic attraction between flexible electrodes of opposing polarities, augmented with liquid dielectric. The base unit of the actuator ...
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from Electronics Weekly https://www.electronicsweekly.com/news/research-news/uk-wetted-electrostatic-actuators-equal-muscle-power-2019-01/
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