| Autor: |
Baumgartner, Richard, Kogler, Alexander, Stadlbauer, Josef M., Foo, Choon Chiang, Kaltseis, Rainer, Baumgartner, Melanie, Mao, Guoyong, Keplinger, Christoph, Koh, Soo Jin Adrian, Arnold, Nikita, Suo, Zhigang, Kaltenbrunner, Martin, Bauer, Siegfried |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| DOI: |
10.1002/advs.201903391 |
| Popis: |
Rapid energyefficient movements are one of nature's greatest developments. Mechanisms like snapbuckling allow plants like the Venus flytrap to close the terminal lobes of their leaves at barely perceptible speed. Here, a soft balloon actuator is presented, which is inspired by such mechanical instabilities and creates safe, giant, and fast deformations. The basic design comprises two inflated elastomer membranes pneumatically coupled by a pressurized chamber of suitable volume. The highspeed actuation of a rubber balloon in a state close to the verge of mechanical instability is remotely triggered by a voltagecontrolled dielectric elastomer membrane. This method spatially separates electrically active and passive parts, and thereby averts electrical breakdown resulting from the drastic thinning of an electroactive membrane during large expansion. Bistable operation with small and large volumes of the rubber balloon is demonstrated, achieving large volume changes of 1398% and a highspeed area change rate of 2600 cm2 s1. The presented combination of fast response time with large deformation and safe handling are central aspects for a new generation of soft bioinspired robots and can help pave the way for applications ranging from haptic displays to soft grippers and highspeed sorting machines. Refereed/Peer-reviewed (VLID)5353420 Version of record |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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