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Applied Physics Letters / Volume 98 / Issue 14 / DIELECTRICS AND FERROELECTRICITY

Appl. Phys. Lett. 98, 142903 (2011); http://dx.doi.org/10.1063/1.3572338 (3 pages)

Soft generators using dielectric elastomers

Thomas G. McKay1, Benjamin M. O’Brien1, Emilio P. Calius2, and Iain A. Anderson1,3

1The Biomimetics Laboratory, The Bioengineering Institute, The University of Auckland, 70 Symonds Street, Auckland 1001, New Zealand
2Industrial Research Limited, Brooke House, 24 Balfour Road, P.O. Box 2225, Auckland 1140, New Zealand
3Department of Engineering Science, The University of Auckland, Private Bag 92019, Auckland Mail Centre, New Zealand

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(Received 20 January 2011; accepted 11 March 2011; published online 5 April 2011)

The potential to produce light-weight, low-cost, wearable dielectric elastomer generators has been limited by the requirement for bulky rigid, and expensive external circuitry. In this letter, we present a soft dielectric elastomer generator whose stretchable circuit elements are integrated within the membrane. The soft generator achieved an energy density of 10 mJ/g at an efficiency of 12% and simply consisted of low-cost acrylic membranes and carbon grease mounted in a frame.

© 2011 American Institute of Physics

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KEYWORDS and PACS

Keywords

dielectric devices, elastomers, electric generators, energy harvesting

PACS

  • 84.60.Ve

    Energy storage systems, including capacitor banks

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3572338

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    References

    T. McKay, B. O'Brien, E. Calius, and I. Anderson, Appl. Phys. Lett. 97, 062911 (2010)APPLAB000097000006062911000001.


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Figures (4)

Figures (click on thumbnails to view enlargements)

FIG.1
The physical layout of the soft generator.

FIG.1 Download High Resolution Image (.zip file) | Export Figure to PowerPoint

FIG.2
The equivalent circuit of the soft generator.

FIG.2 Download High Resolution Image (.zip file) | Export Figure to PowerPoint

FIG.3
The output voltage of the soft generator when cycled at 3 Hz.

FIG.3 Download High Resolution Image (.zip file) | Export Figure to PowerPoint

FIG.4
The average final cycle energy density and efficiency versus frequency for the soft DEG and the equivalent diodes based generator. The error bars indicate the maximum and minimum values obtained from five experiments.

FIG.4 Download High Resolution Image (.zip file) | Export Figure to PowerPoint



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