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Volume 6
Research & Reviews: Journal of Material Sciences
Advanced Materials 2018
September 19-21, 2018
September 19-21, 2018 Tokyo, Japan
22
nd
International Conference on
Advanced Materials and Nanotechnology
Res. Rev. J Mat. Sci. 2018, Volume 6
DOI: 10.4172/2321-6212-C4-024
Super-extendable fibers for transmission line and artificial muscle
Changsoon Choi
DGIST Scholar-Smart Textile Convergence Group, Republic of Korea
H
ighly deformable and electrically conductive fibers are needed for diverse applications. Here, we report the supercoil
structure (coiling of a coil) inspired, highly elastic, and electrically conducting fibers. The supercoiled fibers were
fabricated by inserting giant twist into the carbon nanotube sheath wrapped spandex core fibers. The resulting supercoiled
fibers show highly ordered and compact structure along fiber direction and provide structural strain, which enables super-
elasticity up to 1000%. The supercoiled fiber exhibited stretch-invariant electrical property that only 4.2% resistance increase
is observed for a full stretch when overcoated by passivation layer. Thanks to this performances, the supercoiled fibers can be
effective extendable transmission lines that electrical square wave signal (30 Hz) transmitted by the supercoiled fiber showed
92% amplitude retention at fully stretch. The supercoiled fibers also could be electrothermally actuating artificial muscles
generating a contracting actuation when electrical voltage applied for Joule heating.
cschoi@dgist.ac.kr