Röntgen’s electrode-free elastomer actuators without electromechanical pull-in instability
Identifieur interne : 001538 ( Pmc/Corpus ); précédent : 001537; suivant : 001539Röntgen’s electrode-free elastomer actuators without electromechanical pull-in instability
Auteurs : Christoph Keplinger ; Martin Kaltenbrunner ; Nikita Arnold ; Siegfried BauerSource :
- Proceedings of the National Academy of Sciences of the United States of America [ 0027-8424 ] ; 2010.
Abstract
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 Röntgen 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.
Url:
DOI: 10.1073/pnas.0913461107
PubMed: 20173097
PubMed Central: 2825178
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