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Thermally Responsive Torsional and Tensile Fiber Actuator Based on Graphene Oxide

Title
Thermally Responsive Torsional and Tensile Fiber Actuator Based on Graphene Oxide
Author
김선정
Keywords
graphene oxide; nylon; torsion; tensile; actuation; temperature
Issue Date
2018-09
Publisher
AMER CHEMICAL SOC
Citation
ACS APPLIED MATERIALS & INTERFACES, v. 10, no. 38, page. 32760-32764
Abstract
Graphene-based actuators are of practical interest because of their relatively low cost compared with other nanocarbon materials, such as carbon nanotubes. We demonstrate the simple fabrication of graphene oxide (GO)-based fibers with an infiltrated nylon-6,6 polymer by wet spinning. These fibers could be twisted to form torsional actuators and further coiled to form tensile actuators. By controlling the relative twisting and coiling direction of the GO/nylon fiber, we were able to realize reversible contraction or elongation actuation with strokes as high as -80 and 75%, respectively, when the samples were heated to 200 degrees C. The tensile actuation showed a remarkably little hysteresis. Moreover, this GO/nylon actuator could lift loads over 100 times heavier than itself and generate a stable actuation at high temperatures over the melting point of the polymer. This novel kind of GO-based actuator, which has a multidirectional actuation, has potential for a wide range of applications such as artificial muscles, robotics, and temperature sensing.
URI
https://pubs.acs.org/doi/10.1021/acsami.8b12426https://repository.hanyang.ac.kr/handle/20.500.11754/120060
ISSN
1944-8244
DOI
10.1021/acsami.8b12426
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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