Amplifying the response of soft actuators by harnessing snap-through instabilities

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Amplifying the response of soft actuators by harnessing snap-through instabilities

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Title: Amplifying the response of soft actuators by harnessing snap-through instabilities
Author: Overvelde, Johannes Tesse bastiaan; Kloek, Tamara; D’haen, Jonas J. A.; Bertoldi, Katia

Note: Order does not necessarily reflect citation order of authors.

Citation: Overvelde, Johannes T. B., Tamara Kloek, Jonas J. A. D’haen, and Katia Bertoldi. 2015. “Amplifying the Response of Soft Actuators by Harnessing Snap-through Instabilities.” Proc Natl Acad Sci USA 112 (35) (August 17): 10863–10868. doi:10.1073/pnas.1504947112.
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Abstract: Although instabilities have traditionally been avoided as they often represent mechanical failure, here we embrace them to amplify the response of fluidic soft actuators. Besides presenting a robust strategy to trigger snap-through instabilities at constant volume in soft fluidic actuators, we also show that the energy released at the onset of the instabilities can be harnessed to trigger instantaneous and significant changes in internal pressure, extension, shape, and exerted force. Therefore, in stark contrast to previously studied soft fluidic actuators, we demonstrate that by harnessing snap-through instabilities it is possible to design and construct systems with highly controllable nonlinear behavior, in which small amounts of fluid suffice to generate large outputs.
Published Version: doi:10.1073/pnas.1504947112
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:27657494
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