Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 31, Issue 45, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202106231
Keywords
actuators; advanced functional systems; bistable structures; energy harvesters; MEMS; robotics
Categories
Funding
- NSF [ECCS-2024649]
- Michigan State University
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Bistable mechanical systems with two local minima of potential energy can stay in stable equilibrium states without external loadings and are widely used for designing advanced functional systems.
Bistable mechanical systems having two local minima of potential energy can rest in either of the two stable equilibrium states in the absence of external loadings. A snap-through action may occur under suitable stimuli and/or loading, during which such systems exhibit distinct properties from linear structures. Such kinds of structures have been widely exploited for designing advanced functional systems for a variety of applications. Here, the advances of bistable structures are summarized for novel advanced functional systems, including actuators, energy harvesters, microelectromechanical systems (MEMS), robotics, energy absorbers, and programmable devices as well as metamaterials. The controllable snap-through motions are highlighted in the nonlinear structures of bistability/multistability. Finally, the major principles, structures, pros and cons, and the future research directions along with its challenges are discussed.
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