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Wiley, Advanced Materials, 11(26), p. 1746-1750, 2013

DOI: 10.1002/adma.201304064

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Powerful, Multifunctional Torsional Micromuscles Activated by Phase Transition

Journal article published in 2013 by Kai Liu ORCID, Chun Cheng ORCID, Joonki Suh, Robert Tang-Kong, Deyi Fu, Sangwook Lee, Jian Zhou, Leon O. Chua, Junqiao Wu
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This paper is available in a repository.

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Abstract

Micro bimorph coils driven by a metalinsulator phase transition in VO2 function as powerful torsional muscles. Reversible torsional motion over one million cycles without degradation is demonstrated, with a superior rotational speed up to ca. 200,000 rpm, an amplitude of 500° per mm length, and a power density up to ca. 39 kW kg⁻¹.