Snap-Through and Pull-In Instabilities of an Arch-Shaped Beam Under an Electrostatic Loading

By Yin Zhang, Yisong Wang, Zhihong Li, Yubo Huang, Dachao Li. Journal of microelectromechanical systems, 2007

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Bistability of curved microbeams actuated by fringing electrostatic fields (2011, background): “The first category is comprised of initially curved (pre-shaped), stress-free structures where the shape is lithographically defined and device operation occurs within the plane parallel to the plane of the wafer substrate [6, 7, 11, 16 ].”
Pull-in and snap-through instabilities in transient deformations of microelectromechanical systems (2009, methodology): “Zhang et al [19] and Krylov et al [20] have studied static problems involving the snapthrough and the pull-in instabilities in circular and bell-shaped arches, respectively.”
Nonlinear Dynamics of MEMS Arches Under Harmonic Electrostatic Actuation (2010, background): “tic [4], [11]–[13], and parallel-plate capacitive [2], [14]–[18].”
The pull-in behavior of electrostatically actuated bistable microstructures (2008, background): “The experimental observation of snap-through buckling and pull-in instability in a curved beam was recently reported in [67] but bistability was not demonstrated.”