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All-Solid-State Carbon Nanotube Torsional and Tensile Artificial Muscles

Title
All-Solid-State Carbon Nanotube Torsional and Tensile Artificial Muscles
Author
김선정
Keywords
Torsional; tensile; actuation; carbon nanotube; supercapacitor; ACTUATORS; SUPERCAPACITORS; YARNS
Issue Date
2014-04
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS , 2014, 14(5), p.2664-2669
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 degrees/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 similar to 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.
URI
https://pubs.acs.org/doi/10.1021/nl500526rhttp://hdl.handle.net/20.500.11754/54112
ISSN
1530-6984; 1530-6992
DOI
10.1021/nl500526r
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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