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Enhancing the Electro-Mechanical Response of Stacked Dielectric Actuators

Cohen, Noy (2017) Enhancing the Electro-Mechanical Response of Stacked Dielectric Actuators. Journal of Elasticity, 127 (1). pp. 103-113. ISSN 0374-3535. https://resolver.caltech.edu/CaltechAUTHORS:20161109-075329027

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Abstract

Dielectric polymer films subjected to an electric field reduce in thickness and expand in area. A pile up configuration of such films, also known as a stacked dielectric actuator, is capable of exhibiting contractive deformations while subjected to external tensile forces. This work analyzes the capabilities of the stacked actuator according to a new microscopically motivated approach which suggests that the macroscopic response is determined by four microscopic factors—the length of the polymer chains, the local behavior of the monomers, the intensity of the local dipole and the chain-density. With the aim of enhancing the actuators performance, a specific local behavior is assumed and the influence of the remaining three quantities is studied. It is shown that the actuation can be significantly improved with appropriate micro-structural changes. Interestingly, this work demonstrates that these micro-structural alterations depend on the envisaged application.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1007/s10659-016-9598-xDOIArticle
http://link.springer.com/article/10.1007%2Fs10659-016-9598-xPublisherArticle
http://rdcu.be/qvU9PublisherFree ReadCube access
ORCID:
AuthorORCID
Cohen, Noy0000-0003-2224-640X
Additional Information:© 2016 Springer Science+Business Media Dordrecht. Received: 12 May 2016 . First Online: 10 October 2016. The author gratefully acknowledges G. deBotton for insightful comments and discussion.
Subject Keywords:Electro-active polymers; Polymer micro-structure; Smart materials; Stacked actuators
Issue or Number:1
Classification Code:Mathematics Subject Classification: 74B20; 74F15; 74G05; 74M05
Record Number:CaltechAUTHORS:20161109-075329027
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20161109-075329027
Official Citation:Cohen, N. J Elast (2017) 127: 103. doi:10.1007/s10659-016-9598-x
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71860
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:09 Nov 2016 18:00
Last Modified:03 Oct 2019 16:11

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