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SCI Article

Harvesting electrical energy from carbon nanotube yarn twist
Author Kim, Shi Hyeong (Dept Biomed Engn); Kim, Keon Jung (Dept Biomed Engn); Mun, Tae Jin (Dept Biomed Engn); Choi, Changsoon (Dept Biomed Engn); Lee, Dong Youn (Dept Biomed Engn); 김선정 (Dept Biomed Engn);
Corresponding Author Info Kim, SJ (reprint author), Hanyang Univ, Dept Biomed Engn, Ctr Self Powered Actuat, Seoul 04763, South Korea.; Baughman, RH (reprint author), Univ Texas Dallas, Alan G MacDiarmid NanoTech Inst, Richardson, TX 75080 USA.
E-mail 씠硫붿씪 븘씠肄sjk@hanyang.ac.kr 씠硫붿씪 븘씠肄 ray.baughman@utdallas.edu
Document Type Article
Source SCIENCE Volume:357 Issue:6353 Pages:773-778 Published:2017
Times Cited 0
External Information PDF 븘씠肄http://dx.doi.org/10.1126/science.aam8771
Abstract Mechanical energy harvesters are needed for diverse applications, including self-powered wireless sensors, structural and human health monitoring systems, and the extraction of energy from ocean waves. We report carbon nanotube yarn harvesters that electrochemically convert tensile or torsional mechanical energy into electrical energy without requiring an external bias voltage. Stretching coiled yarns generated 250 watts per kilogram of peak electrical power when cycled up to 30 hertz, as well as up to 41.2 joules per kilogram of electrical energy per mechanical cycle, when normalized to harvester yarn weight. These energy harvesters were used in the ocean to harvest wave energy, combined with thermally driven artificial muscles to convert temperature fluctuations to electrical energy, sewn into textiles for use as self-powered respiration sensors, and used to power a light-emitting diode and to charge a storage capacitor.
Web of Science Categories Multidisciplinary Sciences
Funding Creative Research Initiative Center for Self-Powered Actuation of the National Research Foundation of Korea; Ministry of Science, ICT & Future Planning; Korea-U.S. Air Force Cooperation Program [2013K1A3A1A32035592]; Ministry of Knowledge Economy [2016851
Language English
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