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Updated: Sep 23, 2025

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
Published on: April 25, 2020
Magnetic torsional actuation of carbon nanotube yarn artificial muscle
Duck Weon Lee1, Shi Hyeong Kim1, Mikhail E Kozlov2
1Center for Self-Powered Actuation, Department of Biomedical Engineering, Hanyang University Seoul 04763 Korea sjk@hanyang.ac.kr.
Abstract:
Magnetically driven torsional actuation of a multiwalled carbon nanotube (MWNT) yarn was realized by first biscrolling NdFeB magnetic particles into helical yarn corridors to make a magnetic MWNT yarn. The actuating device comprised a pristineMWNT yarn that was connected to the magnetic MWNT yarn, with a paddle attached between these yarns. The application of a magnetic field reversibly drove torsional actuation of up to 80° within ∼0.67 seconds. This magnetic actuator was remotely powered, and its actuation stroke was the same when the muscle array was at 20 °C and at -100 °C.
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