Abstract
We propose a simple methodology to paint carbon nanotube (CNT) powder with a soft brush onto an elastomer. A large deformation of dielectric elastomer actuator (DEA) occurs according to the small constraint of the electrodes. Uniform painting with a soft brush leads to a stable deformation, as demonstrated by the results of multiple trials. Unexpectedly, painting with a soft brush results in aligned materials on the elastomer. The oriented materials demonstrate anisotropic mechanical and electronic properties. This simple methodology should help realize innovative DEA applications.
Highlights
Soft actuators and their applications have been studied in a variety of perspectives
We aim to improve performance of the dielectric elastomer actuator (DEA) by reducing the strain constraints of the electrode layer
We propose a simple concept of painting a carbon nanotube (CNT) powder directly on an elastomer with a soft brush
Summary
Soft actuators and their applications have been studied in a variety of perspectives. Examples include pneumatic soft rubber actuators [1,2,3,4], dielectric elastomer actuators (DEAs) [5,6,7,8], and gel actuators [9,10]. Compared to other soft actuators, DEAs are energy efficient and power dense because they are electrostatic actuators. For these reasons, DEAs are attracting attention in both research and industrial fields. Companies are beginning to employ DEA technologies to adopt the energy efficiency. Valves and grippers of DEAs are demonstrated [11]
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