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Fast low-voltage electroactive actuators using nanostructured polymer electrolytes SCIE SCOPUS

Title
Fast low-voltage electroactive actuators using nanostructured polymer electrolytes
Authors
Onnuri KimTae Joo ShinPark, MJ
Date Issued
2013-07
Publisher
NPG
Abstract
Electroactive actuators have received enormous interest for a variety of biomimetic technologies ranging from robotics and microsensors to artificial muscles. Major challenges towards practically viable actuators are the achievement of large electromechanical deformation, fast switching response, low operating voltage and durable operation. Here we report a new electroactive actuator composed of self-assembled sulphonated block copolymers and ionic liquids. The new actuator demonstrated improvements in actuation properties over other polymer actuators reported earlier, large generated strain (up to 4%) without any signs of back relaxation. In particular, the millimetre-scale displacements obtained for the actuators, with rapid response (<1 s) at sub-1-V conditions over 13,500 cycles in air, have not been previously reported in the literature. The key to success stems from the evolution of the unique hexagonal structure of the polymer layer with domain size gradients beneath the cathode during actuation, which promotes the bending motion of the actuators.
Keywords
SULFONATED BLOCK-COPOLYMERS; WALLED CARBON NANOTUBES; FULLY PLASTIC ACTUATOR; IONIC LIQUID GEL; BUCKY GEL; DIELECTRIC ELASTOMERS; COMPOSITE ACTUATORS; PERFORMANCE; IONOMERS; BEHAVIOR
URI
https://oasis.postech.ac.kr/handle/2014.oak/13115
DOI
10.1038/NCOMMS3208
ISSN
2041-1723
Article Type
Article
Citation
Nature Communications, vol. 4, 2013-07
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