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Keywords: Dielectric elastomer Finite strain Snap-through instability Bifurcation Electromechanical processes a b s t r a c t Dielectric elastomers are capable of large voltage-induced deformation, but achieving such large deformation in practice has been a major challenge due to electromechanical instability and electric breakdown. The complex nonlinear(More)
—Dielectric elastomers are being developed as generators to harvest energy from renewable sources, such as human movements and ocean waves. We model a generator as a system of two degrees of freedom, represented on either the stress–stretch plane or the voltage–charge plane. A point in such a plane represents a state of the generator, a curve represents a(More)
PAPER Siegfried Bauer et al. Harnessing snap-through instability in soft dielectrics to achieve giant voltage-triggered deformation RSC Advances is a new peer-reviewed journal covering all the chemical sciences, including interdisciplinary fields. Published articles report high quality, well-conducted research that adds to the development of the field. z(More)
Scientists are exploring elastic and soft forms of robots, electronic skin and energy harvesters, dreaming to mimic nature and to enable novel applications in wide fields, from consumer and mobile appliances to biomedical systems, sports and healthcare. All conceivable classes of materials with a wide range of mechanical, physical and chemical properties(More)
Soft robots actuated by inflation of a pneumatic network (a " pneu-net ") of small channels in elastomeric materials are appealing for producing sophisticated motions with simple controls. Although current designs of pneu-nets achieve motion with large amplitudes, they do so relatively slowly (over seconds). This paper describes a new design for pneu-nets(More)
Existing stretchable, transparent conductors are mostly electronic conductors. They limit the performance of interconnects, sensors, and actuators as components of stretchable electronics and soft machines. We describe a class of devices enabled by ionic conductors that are highly stretchable, fully transparent to light of all colors, and capable of(More)
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(More)
The use of omniphobic "fluoroalkylated paper" as a substrate for inkjet printing of aqueous inks that are the precursors of electrically conductive patterns is described. By controlling the surface chemistry of the paper, it is possible to print high resolution, conductive patterns that remain conductive after folding and exposure to common solvents.
Relating the onset of clinical attacks as recorded on a videotape to surface and depth electrographic events improves our ability to define the local or diffuse origin of seizures. In two patients with complex partial seizures, all 14 attacks appeared 3 to 6 seconds after focal discharges began in the amygdala or hippocampus. This meant that the spread of(More)
a Clean, renewable and abundant sources of energy, such as the vast energy of ocean waves, are untapped today, because no technology exists to convert such mechanical motions to electricity economically. Other sources of mechanical energy, such as motions of people and vibrations of buildings and bridges, can potentially power portable electronics and(More)