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Mao G, Drack M, Karami-Mosammam M, et al. Soft electromagnetic actuators. Sci Adv. 2020;6(26):eabc0251doi: 10.1126/sciadv.abc0251.
Mao, G., Drack, M., Karami-Mosammam, M., Wirthl, D., Stockinger, T., Schwödiauer, R., & Kaltenbrunner, M. (2020). Soft electromagnetic actuators. Science advances, 6(26), eabc0251. https://doi.org/10.1126/sciadv.abc0251
Mao, Guoyong, et al. "Soft electromagnetic actuators." Science advances vol. 6,26 (2020): eabc0251. doi: https://doi.org/10.1126/sciadv.abc0251
Mao G, Drack M, Karami-Mosammam M, Wirthl D, Stockinger T, Schwödiauer R, Kaltenbrunner M. Soft electromagnetic actuators. Sci Adv. 2020 Jun 26;6(26):eabc0251. doi: 10.1126/sciadv.abc0251. eCollection 2020 Jun. PMID: 32637626; PMCID: PMC7319732.
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Sci Adv. 2020 Jun 26;6(26):eabc0251. doi: 10.1126/sciadv.abc0251. eCollection 2020 Jun.

Soft electromagnetic actuators.

Science advances

Guoyong Mao, Michael Drack, Mahya Karami-Mosammam, Daniela Wirthl, Thomas Stockinger, Reinhard Schwödiauer, Martin Kaltenbrunner

Affiliations

  1. Division of Soft Matter Physics, Institute for Experimental Physics, Johannes Kepler University Linz, Altenberger Strasse 69, 4040 Linz, Austria.
  2. Soft Materials Lab, Linz Institute of Technology, Johannes Kepler University Linz, Altenberger Strasse 69, 4040 Linz, Austria.

PMID: 32637626 PMCID: PMC7319732 DOI: 10.1126/sciadv.abc0251

Abstract

Rigid electromagnetic actuators serve our society in a myriad of ways for more than 200 years. However, their bulky nature restricts close collaboration with humans. Here, we introduce soft electromagnetic actuators (SEMAs) by replacing solid metal coils with liquid-metal channels embedded in elastomeric shells. We demonstrate human-friendly, simple, stretchable, fast, durable, and programmable centimeter-scale SEMAs that drive a soft shark, interact with everyday objects, or rapidly mix a dye with water. A multicoil flower SEMA with individually controlled petals blooms or closes within tens of milliseconds, and a cubic SEMA performs programmed, arbitrary motion sequences. We develop a numerical model supporting design and opening potential routes toward miniaturization, reduction of power consumption, and increase in mechanical efficiency. SEMAs are electrically controlled shape-morphing systems that are potentially empowering future applications from soft grippers to minimally invasive medicine.

Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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