Compliant composite electrodes and large strain bistable actuation

Sungryul Yun; Zhibin Yu; Xiaofan Niu; Weili Hu; Lu Li; Paul Brochu; Qibing Pei

doi:10.1117/12.915518

3 April 2012 Compliant composite electrodes and large strain bistable actuation

Sungryul Yun, Zhibin Yu, Xiaofan Niu, Weili Hu, Lu Li, Paul Brochu, Qibing Pei

Proceedings Volume 8340, Electroactive Polymer Actuators and Devices (EAPAD) 2012; 834012 (2012) https://doi.org/10.1117/12.915518
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

Dielectric elastomer actuators (DEA) and bistable electroactive polymers (BSEP) both require compliant electrodes with rubbery elasticity and high conductivity at large strains. Stretchable opto-electronic devices additionally require the compliant electrodes to be optically transparent. Many candidate materials have been investigated. We report a new approach to mechanically robust, stretchable compliant electrodes. A facile in-situ composite synthesis and transfer technique is employed, and the resulting composite electrodes retain the high surface conductivity of the original conductive network formed by nanowires or nanotubes, while exhibiting the mechanical flexibility of the matrix polymer. The composite electrodes have high transparency and low surface roughness useful for the fabrication of polymer thinfilm electronic devices. The new electrodes are suitable for high-strain actuation, as a complaint resistive heating element to administer the temperature of shape memory polymers, and as the charge injection electrodes for flexible/stretchable polymer light emitting diodes. Bistable electroactive polymers employing the composite electrodes can be actuated to large strains via heating-actuation-cooling cycles.

Citation Download Citation

Sungryul Yun, Zhibin Yu, Xiaofan Niu, Weili Hu, Lu Li, Paul Brochu, and Qibing Pei "Compliant composite electrodes and large strain bistable actuation", Proc. SPIE 8340, Electroactive Polymer Actuators and Devices (EAPAD) 2012, 834012 (3 April 2012); https://doi.org/10.1117/12.915518

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KEYWORDS

Electrodes

Composites

Polymers

Actuators

Glasses

Nanowires

Electroactive polymers

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