Magnetic Torsional Actuation of Carbon Nanotube Yarn Artificial Muscle



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Royal Society of Chemistry


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.



Iron alloys, Magnetism, Carbon nanotubes, Muscles, Neodymium, Wool, Yarn

The Korea-US Air Force Cooperation Program (Grant No. 2013K1A3A1A32035592), and the National Research Foundation (Grant No. 2016R1C1B2012340) of the Ministry of Science, US Air Force Grant AOARD-FA2386-13-4119, Air Force Office of Scientific Research grant FA9550-15-1-0089, and Robert A. Welch Foundation grant AT-0029.


CC BY 3.0 (Attribution), ©2018 The Royal Society of Chemistry