@article {646273,
	title = {3D Printing of Interdigitated Dielectric Elastomer Actuators},
	journal = {Advanced Functional Materials},
	year = {2019},
	pages = {1907375},
	publisher = {Wiley Online Library},
	abstract = {Dielectric elastomer actuators (DEAs) are soft electromechanical devices that exhibit large energy densities and fast actuation rates. They are typically produced by planar methods and, thus, expand in-plane when actuated. Here, reported is a method for fabricating 3D interdigitated DEAs that exhibit in-plane contractile actuation modes. First, a conductive elastomer ink is created with the desired rheology needed for printing high-fidelity, interdigitated electrodes. Upon curing, the electrodes are then encapsulated in a self-healing dielectric matrix composed of a plasticized, chemically crosslinked polyurethane acrylate. 3D DEA devices are fabricated with tunable mechanical properties that exhibit breakdown fields of 25 V {\textmu}m-1 and actuation strains of up to 9\%. As exemplars, printed are prestrain-free rotational actuators and multi-voxel DEAs with orthogonal actuation directions in large-area, out-of-plane motifs.},
	isbn = {1616-301X},
	url = {https://doi.org/10.1002/adfm.201907375},
	author = {Alex Chortos and Hajiesmaili, Ehsan and Javier Morales and David R. Clarke and Jennifer A. Lewis}
}
