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Capacitor With A Dielectric

Capacitor With A Dielectric

Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...

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Updated: Oct 10, 2025

Fabrication Process of Silicone-based Dielectric Elastomer Actuators

Fabrication Process of Silicone-based Dielectric Elastomer Actuators

Published on: February 1, 2016

Monolithic Stacked Dielectric Elastomer Actuators.

Jun Shintake¹, Daiki Ichige¹, Ryo Kanno¹

¹Department of Mechanical and Intelligent Systems Engineering, School of Informatics and Engineering, The University of Electro-Communications, Chofu, Japan.

Frontiers in Robotics and AI

|December 13, 2021

Summary

This summary is machine-generated.

This study introduces a novel monolithic fabrication method for stacked dielectric elastomer actuators (DEAs), simplifying soft robotics development. The new technique avoids complex layer stacking, enabling easier manufacturing of muscle-like actuators.

Keywords:

3D printing dielectric elastomer actuators microfluidics molding soft robotics

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Area of Science:

Materials Science
Robotics Engineering
Polymer Science

Background:

Dielectric elastomer actuators (DEAs) are crucial for soft robotics, offering muscle-like actuation.
Stacked DEAs provide enhanced contraction but typically require complex, manual layer-by-layer fabrication.
Existing methods for stacked DEAs involve intricate processes or laborious manual assembly.

Purpose of the Study:

To develop a simplified, monolithic fabrication method for stacked dielectric elastomer actuators (DEAs).
To eliminate the need for alternating dielectric and electrode layer stacking in DEA manufacturing.
To demonstrate the feasibility of a new fabrication approach for soft robotic actuators.

Main Methods:

Fabrication involves molding an elastomeric matrix with microfluidic channels, followed by injecting a liquid conductive electrode material.
Polydimethylsiloxane (PDMS) was used as the elastomeric matrix, and eutectic gallium-indium (EGaIn) as the conductive electrode.
Microfluidic channels were created by dissolving a 3D-printed sacrificial component within the PDMS structure.

Main Results:

Successfully fabricated monolithic stacked DEAs with multiple electrodes (2, 4, and 10).
Characterized actuators demonstrated measurable actuation stroke, output force, and frequency response.
Experimental data showed good agreement with theoretical predictions, validating the method's effectiveness.

Conclusions:

The proposed monolithic fabrication method offers a simplified approach to producing stacked DEAs.
This technique facilitates the development of advanced soft robotic systems requiring muscle-like actuators.
The method is validated by successful fabrication and characterization of functional monolithic DEAs.