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Updated: Dec 17, 2025

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

Published on: April 25, 2020

3D Printed Electrically-Driven Soft Actuators.

Ghazaleh Haghiashtiani¹, Ed Habtour^2,3,4, Sung-Hyun Park¹

¹Department of Mechanical Engineering, University of Minnesota, 111 Church St. SE, Minneapolis, MN 55455, USA.

Extreme Mechanics Letters

|June 30, 2020

Summary

This summary is machine-generated.

Researchers developed 3D printed soft dielectric elastomer actuators (DEAs) using ionic hydrogel-elastomer hybrids. These actuators mimic biological movement and achieve significant bending motion with electrical input.

Keywords:

3D printing Dielectric elastomer actuators Ionic hydrogels Soft actuators Soft robotics

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Area of Science:

Soft robotics
Materials science
Biomimetics

Background:

Soft robotics aims to replicate biological locomotion using advanced soft materials.
Soft actuators are crucial for developing soft robots and bio-inspired machines.
Ionic hydrogel-elastomer hybrids offer skin-like properties, making them promising for soft devices.

Purpose of the Study:

To demonstrate 3D printable soft dielectric elastomer actuators (DEAs) using ionic hydrogel-elastomer hybrids.
To investigate the actuation performance of these unimorph DEAs.
To model the nonlinear actuation behavior of the fabricated DEAs.

Main Methods:

Fabrication of unimorph DEAs via 3D printing of ionic hydrogel-elastomer hybrids.
Characterization of device actuation under ramp-up electrical input, cyclic loading, and varying payload masses.
Modeling of nonlinear actuation using analytical energetic formulation and finite element method (FEM).

Main Results:

Successfully 3D printed unimorph DEAs capable of high bending motion.
Achieved a maximum vertical tip displacement of 9.78 ± 2.52 mm at 5.44 kV.
Successfully modeled the nonlinear actuation behavior of the DEAs.

Conclusions:

Ionic hydrogel-elastomer hybrids are suitable for 3D printing soft dielectric elastomer actuators.
The developed DEAs exhibit significant bending motion in response to electrical stimuli.
Analytical and FEM models accurately predict the nonlinear actuation of the unimorph DEAs.