Preparation and properties of core-shell structured calcium copper titanate@polyaniline/silicone dielectric elastomer actuators

2017 ◽  
Vol 40 (S1) ◽  
pp. E62-E68 ◽  
Author(s):  
Yi Yang Zhang ◽  
Gen Lin Wang ◽  
Jie Zhang ◽  
Ke Hong Ding ◽  
Zhi Feng Wang ◽  
...  
Keyword(s):  
Dielectric Elastomer ◽  
Core Shell ◽  
Dielectric Elastomer Actuators ◽  
Calcium Copper Titanate

scholarly journals Effects of Ferroelectric Fillers on Composite Dielectric Elastomer Actuator

Actuators ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 137
Author(s):  
Stanislav Sikulskyi ◽  
Danayit T. Mekonnen ◽  
Abdullah El Atrache ◽  
Eduardo Divo ◽  
Daewon Kim
Keyword(s):  
Dielectric Permittivity ◽  
Breakdown Strength ◽  
Dielectric Elastomer ◽  
Particle Loading ◽  
Comprehensive Understanding ◽  
Figures Of Merit ◽  
Dielectric Elastomer Actuators ◽  
Calcium Copper Titanate ◽  
Improved Performance ◽  
Composite Properties

Integrating nano- to micro-sized dielectric fillers to elastomer matrices to form dielectric composites is one of the commonly utilized methods to improve the performance of dielectric elastomer actuators (DEAs). Barium titanate (BaTiO3) is among the widely used ferroelectric fillers for this purpose; however, calcium copper titanate CaCu3Ti4O12 (CCTO) has the potential to outperform such conventional fillers. Despite their promising performance, CCTO-based dielectric composites for DEA application are studied to a relatively lower degree. Particularly, the composites are characterized for a comparably small particle loading range, while critical DEA properties such as breakdown strength and nonlinear elasticity are barely addressed in the literature. Thus, in this study, CCTO was paired with polydimethylsiloxane (CH3)3SiO[Si(CH3)2O]nSi(CH3)3 (PDMS), Sylgard 184, to gain a comprehensive understanding of the effects of particle loading and size on the dielectric composite properties important for DEA applications. The dielectric composites’ performance was described through the figures of merit (FOMs) that consider materials’ Young’s modulus, dielectric permittivity, and breakdown strength. The optimum amounts of the ferroelectric filler were determined through the FOMs to maximize composite DEA performance. Lastly, electromechanical testing of the pre-stretched CCTO-composite DEA validated the improved performance over the plain elastomer DEA, with deviations from prediction attributed to the studied composites’ nonlinearity.

High Breakdown Field Dielectric Elastomer Actuators Using Encapsulated Polyaniline as High Dielectric Constant Filler

2010 ◽  
Vol 20 (19) ◽  
pp. 3280-3291 ◽  
Author(s):  
Martin Molberg ◽  
Daniel Crespy ◽  
Patrick Rupper ◽  
Frank Nüesch ◽  
Jan-Anders E. Månson ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Dielectric Elastomer ◽  
Breakdown Field ◽  
Dielectric Elastomer Actuators ◽  
High Dielectric

Combined driving and sensing circuitry for dielectric elastomer actuators in mobile applications

2011 ◽  
Author(s):  
Marc Matysek ◽  
Henry Haus ◽  
Holger Moessinger ◽  
Dirk Brokken ◽  
Peter Lotz ◽  
...  
Keyword(s):  
Mobile Applications ◽  
Dielectric Elastomer ◽  
Dielectric Elastomer Actuators
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