Publications논문

All-Solid-State Carbon Nanotube Torsional and Tensile Artificial Muscles
2014-04-17 11:57:26 조회수612
Jae Ah Lee †, Youn Tae Kim ‡, Geoffrey M. Spinks §, Dongseok Suh , Xavier Lepró , Mácio D. Lima , Ray H. Baughman , and Seon Jeong Kim *† † Center for Bio-Artificial Muscle and Department of Biomedical Engineering, Hanyang University, Seoul 133-791, Korea ‡ IT Fusion Technology Research Center and Department of IT Fusion Technology, Chosun University, Gwangju 501-759, Korea § Intelligent Polymer Research Institute, ARC Centre of Excellence for Electromaterials Science, University of Wollongong, Wollongong, NSW 2522, Australia Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Korea The Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Richardson, Texas 75083, United States 원문 링크 : http://pubs.acs.org/doi/abs/10.1021/nl500526r

Abstract

We report electrochemically powered, all-solid-state torsional and tensile artificial yarn muscles using a spinnable carbon nanotube (CNT) sheet that provides attractive performance. Large torsional muscle stroke (53°/mm) with minor hysteresis loop was obtained for a low applied voltage (5 V) without the use of a relatively complex three-electrode electromechanical setup, liquid electrolyte, or packaging. Useful tensile muscle strokes were obtained (1.3% at 2.5 V and 0.52% at 1 V) when lifting loads that are 25 times heavier than can be lifted by the same diameter human skeletal muscle. Also, the tensile actuator maintained its contraction following charging and subsequent disconnection from the power supply because of its own supercapacitor property at the same time. Possible eventual applications for the individual tensile and torsional muscles are in micromechanical devices, such as for controlling valves and stirring liquids in microfluidic circuits, and in medical catheters.


 
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