4.8 Article

Stretchable, High-k Dielectric Elastomers through Liquid-Metal Inclusions

Journal

ADVANCED MATERIALS
Volume 28, Issue 19, Pages 3726-3731

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201506243

Keywords

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Funding

  1. AFOSR [FA9550-13-1-0123]
  2. NASA [NNX14AO49G]
  3. NASA [NNX14AO49G, 677201] Funding Source: Federal RePORTER

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An all-soft-matter composite with exceptional electro-elasto properties is demonstrated by embedding liquid-metal inclusions in an elastomer matrix. This material exhibits a unique combination of high dielectric constant, low stiffness, and large strain limit (ca. 600% strain). The elasticity, electrostatics, and electromechanical coupling of the composite are investigated, and strong agreement with predictions from effective medium theory is found.

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