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

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

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, elect...

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Veröffentlicht in:Advanced materials (Weinheim) 2016-05, Vol.28 (19), p.3726-3731
Hauptverfasser: Bartlett, Michael D., Fassler, Andrew, Kazem, Navid, Markvicka, Eric J., Mandal, Pratiti, Majidi, Carmel
Format: Artikel
Sprache:eng
Schlagworte:
Coupling
Dielectric constant
dielectric elastomers
Dielectrics
Effective medium theory
Elastomers
Electrostatics
eutectic gallium-indium
Inclusions
liquid-solid interfaces
Materials science
Stiffness
Strain
stretchable electronics
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Beschreibung
Zusammenfassung: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.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201506243