Robust and Multi-Functional Electrically Responsive Gold/Polydopamine-Coated Liquid Crystalline Elastomer Artificial Muscles
Joshua C. Ince, Setareh Elyasi, Alan R. Duffy, Nisa V. Salim

TL;DR
This paper introduces a method to improve the performance of artificial muscles by enhancing the adhesion of electrically conductive coatings on liquid crystalline elastomers.
Contribution
A new method using polydopamine treatment to enhance adhesion of gold coatings on LCEs, enabling multi-functional electrically responsive artificial muscles.
Findings
PDA treatment significantly improves adhesion of gold coatings on LCEs.
The method enables fabrication of LCEs with strain-sensing and electro-responsive features.
The resulting materials exhibit self-actuation-sensing and joule-heating capabilities.
Abstract
Applying thin electrically conductive coatings to Liquid Crystalline Elastomers (LCEs) is an effective way of functionalizing two-way shape memory polymers with the ability to respond to electrical currents. However, achieving robust adhesion between a given electrically conductive coating and the surface of LCEs can be challenging. This can limit the functionality, performance, and potential applications of these materials. This work describes a facile method to develop electrically responsive Liquid Crystalline Elastomer polymeric artificial muscles with strain-sensing, self-actuation-sensing, and joule-heating features. In this work, the effect of treating LCEs with polydopamine (PDA) prior to functionalizing the LCE with an electrically conductive gold-sputtered coating was explored. The findings confirmed that the PDA treatment considerably improved the adhesion of the gold sputter…
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Taxonomy
TopicsAdvanced Materials and Mechanics · Polymer composites and self-healing · Dielectric materials and actuators
