Snap-Action Bistable Micromechanisms Actuated by Nonlinear Resonance

Casals‐Terré, Jasmina; Fargas-Marques, A.; Shkel, Andrei M.

doi:10.1109/jmems.2008.2003054

Cited by 89 publications

(41 citation statements)

References 15 publications

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“…They use two curved centrally-clamped parallel beams to generate the bistable potential, see Figure 13. A similar approach is taken in [26] on which pre shaped buckled beams are designed [27]. In general the physics of curved arches requires additional analysis in order to predict the nonlinear effects due to the curvature of the structures and the snap-through instability [28,29].…”

Section: Bistable Potentials Obtained By Buckling or Snap-through Insmentioning

confidence: 99%

MEMS Technologies for Energy Harvesting

Domínguez-Pumar

Pons-Nin

Chávez-Domínguez

2016

Nonlinearity in Energy Harvesting Systems

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The objective of this chapter is to introduce the technology of Microelectromechanical Systems, MEMS, and its application to emerging energy harvesting devices. The chapter begins with a general introduction to the most common MEMS fabrication processes. Next, the chapter follows with a survey of design mechanisms implemented in MEMS energy harvesters to provide nonlinear mechanical actuations. Mechanisms to produce bistable potential will be studied, such as by placing fixed magnets, buckling of beams, or by using slightly slanted clamped-clamped beams. Other nonlinear mechanisms are studied such as impact energy transfer, or the design of nonlinear springs. Finally, due to their importance in the field of MEMS and their application to energy harvesters, an introduction to the actuation with piezoelectric materials is made. Examples of energy harvesters found in the literature using this actuation principle are also presented.

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Section: Bistable Potentials Obtained By Buckling or Snap-through Insmentioning

confidence: 99%

MEMS Technologies for Energy Harvesting

Domínguez-Pumar

Pons-Nin

Chávez-Domínguez

2016

Nonlinearity in Energy Harvesting Systems

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“…The bistability nature of arches gives them the advantage of exhibiting large motion stroke when moving between the two stable states, which can be advantageous for resonators and other actuation applications because it yields significantly large signal-to-noise ratio. Consequently, the bistability of arches has been thoroughly studied in order to exploit them in useful applications [1][2][3][4][5][6][7][8][9][10]. For example, micro arches are used as microbridges [7], microvalves [11], microelectro switches or relays [12], logic memories [13], micromuscles [14], and micro-optical switches [15].…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Investigation of the Nonlinear Behavior of an Electrostatically Actuated In-Plane MEMS Arch

Ramini

Hennawi

Younis

2016

J. Microelectromech. Syst.

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“…Bistable mechanical systems possess two distinct equilibrium positions, which do not need any external energy to be maintained [1]. From the point of view of the internal energy of the system, there are two minimum points which are separated by a local maximum.…”

Section: Introductionmentioning

confidence: 99%

Design of a compact bistable mechanism based on dielectric elastomer actuators

2015

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Bistable mechanisms are widely used in the applications where two stable positions must be held for long time without energy consumption. The main advantage of bistable mechanisms is a sensible reduction in bulkiness and energy cost. Among the possible active triggering systems, dielectric elastomer actuators (DEAs) are gaining attention, for their efficiency and strain rate, as a viable alternative to traditional technologies. In the present work, a novel design of a bistable system is proposed, counting on a cross-like shape bistable element coupled with two axially arranged conical DEAs. Analytical and FEM models have been used to implement and analyze the behavior of the single components and the final coupled system. The obtained results confirm the feasibility of the switching process between the equilibrium points and the capability to capture and numerically describe the interactions between the actuators and the bistable beams. A specific device has been finally envisaged to exemplify the possibility to develop a light-weight and compact system able to sustain and passively maintain a linear displacement which equals the 46 % of its own total length

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Snap-Action Bistable Micromechanisms Actuated by Nonlinear Resonance

Cited by 89 publications

References 15 publications

MEMS Technologies for Energy Harvesting

MEMS Technologies for Energy Harvesting

Theoretical and Experimental Investigation of the Nonlinear Behavior of an Electrostatically Actuated In-Plane MEMS Arch

Design of a compact bistable mechanism based on dielectric elastomer actuators

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