Issue 12, 2022

Optically addressable dielectric elastomer actuator arrays using embedded percolative networks of zinc oxide nanowires

Abstract

Dielectric elastomer actuators (DEAs) are electrically driven soft actuators that generate fast and reversible deformations, enabling lightweight actuation of many novel soft robots and haptic devices. However, the high-voltage operation of DEAs combined with the paucity of soft, small high-voltage microelectronics has limited the number of discrete DEAs that can be incorporated into soft robots. This has hindered the versatility as well as complexity of the tasks that they can perform which, in practice, depends on the number of independently addressable actuating elements. This paper presents a new class of optically addressable dielectric elastomer actuators that utilize the photoconductivity of semiconducting zinc oxide nanowires to create optically switchable and stretchable electrical channels. This enables non-contact, optical control of local actuation. To illustrate the versatility of the new capabilities of this integration, we describe the response of dielectric elastomer actuators with integrated photoconductive channels, formed from thin films of percolating semiconducting nanoparticles. By using a switchable array of small light emitting diodes to optically address the actuator array, its actuation can be controlled both spatially and temporally.

Graphical abstract: Optically addressable dielectric elastomer actuator arrays using embedded percolative networks of zinc oxide nanowires

Supplementary files

Article information

Article type
Communication
Submitted
18 Aug 2022
Accepted
21 Oct 2022
First published
21 Oct 2022

Mater. Horiz., 2022,9, 3110-3117

Author version available

Optically addressable dielectric elastomer actuator arrays using embedded percolative networks of zinc oxide nanowires

E. Hajiesmaili and D. R. Clarke, Mater. Horiz., 2022, 9, 3110 DOI: 10.1039/D2MH01032A

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