文章基本信息

标题：Röntgen’s electrode-free elastomer actuators without electromechanical pull-in instability
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作者：Christoph Keplinger ; Martin Kaltenbrunner ; Nikita Arnold 等
期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2010
卷号：107
期号：10
页码：4505-4510
DOI：10.1073/pnas.0913461107
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Electrical actuators made from films of dielectric elastomers coated on both sides with stretchable electrodes may potentially be applied in microrobotics, tactile and haptic interfaces, as well as in adaptive optical elements. Such actuators with compliant electrodes are sensitive to the pull-in electromechanical instability, limiting operational voltages and attainable deformations. Electrode-free actuators driven by sprayed-on electrical charges were first studied by Rontgen in 1880. They withstand much higher voltages and deformations and allow for electrically clamped (charge-controlled) thermodynamic states preventing electromechanical instabilities. The absence of electrodes allows for direct optical monitoring of the actuated elastomer, as well as for designing new 3D actuator configurations and adaptive optical elements.
关键词：electroactive polymers ; dielectric materials ; dielectric breakdown ; adaptive optics ; Maxwell stress