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      • Department of Mechanical Engineering
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      Full electrostatic control of nanomechanical buckling

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      Author(s)
      Erbil, Selçuk Oğuz
      Hatipoğlu, Utku
      Yanık, C.
      Ghavami, Mahyar
      Arı, Atakan B.
      Yüksel, Mert
      Hanay, Mehmet Selim
      Date
      2020
      Source Title
      Physical Review Letters
      Print ISSN
      0031-9007
      Publisher
      American Physical Society
      Volume
      124
      Issue
      4
      Pages
      046101-1 - 046101-7
      Language
      English
      Type
      Article
      Item Usage Stats
      9
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      12
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      Abstract
      Buckling of mechanical structures results in bistable states with spatial separation, a feature desirable for sensing, shape configuration, and mechanical computation. Although different approaches have been developed to access buckling at microscopic scales, such as heating or prestressing beams, little attention has been paid so far to dynamically control all the parameters critical for the bifurcation—the compressive stress and the lateral force on the beam. Here, we develop an all-electrostatic architecture to control the compressive force, as well as the direction and amount of buckling, without significant heat generation on micro- or nanostructures. With this architecture, we demonstrated fundamental aspects of device function and dynamics. By applying voltages at any of the digital electronics standards, we have controlled the direction of buckling. Lateral deflections as large as 12% of the beam length were achieved. By modulating the compressive stress and lateral electrostatic force acting on the beam, we tuned the potential energy barrier between the postbifurcation stable states and characterized snap-through transitions between these states. The proposed architecture opens avenues for further studies in actuators, shape-shifting devices, thermodynamics of information, and dynamical chaos.
      Keywords
      Bifurcations
      Buckling
      Elasticity
      Material failure
      Mechanical deformation
      Permalink
      http://hdl.handle.net/11693/75704
      Published Version (Please cite this version)
      https://dx.doi.org/10.1103/PhysRevLett.124.046101
      Collections
      • Department of Mechanical Engineering 288
      • Institute of Materials Science and Nanotechnology (UNAM) 1930
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