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    Switch on, switch off: stiction in nanoelectromechanical switches

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    Type
    Article
    Authors
    Wagner, Till J W
    Vella, Dominic
    KAUST Grant Number
    KUK-C1-013-04
    Date
    2013-06-13
    Online Publication Date
    2013-06-13
    Print Publication Date
    2013-07-12
    Permanent link to this record
    http://hdl.handle.net/10754/599823
    
    Metadata
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    Abstract
    We present a theoretical investigation of stiction in nanoscale electromechanical contact switches. We develop a mathematical model to describe the deflection of a cantilever beam in response to both electrostatic and van der Waals forces. Particular focus is given to the question of whether adhesive van der Waals forces cause the cantilever to remain in the 'ON' state even when the electrostatic forces are removed. In contrast to previous studies, our theory accounts for deflections with large slopes (i.e. geometrically nonlinear). We solve the resulting equations numerically to study how a cantilever beam adheres to a rigid electrode: transitions between 'free', 'pinned' and 'clamped' states are shown to be discontinuous and to exhibit significant hysteresis. Our findings are compared to previous results from linearized models and the implications for nanoelectromechanical cantilever switch design are discussed. © 2013 IOP Publishing Ltd.
    Citation
    Wagner TJW, Vella D (2013) Switch on, switch off: stiction in nanoelectromechanical switches. Nanotechnology 24: 275501. Available: http://dx.doi.org/10.1088/0957-4484/24/27/275501.
    Sponsors
    This publication is based on work supported in part by Award No. KUK-C1-013-04, made by King Abdullah University of Science and Technology (KAUST). TJWW is supported by EPSRC and Cambridge Philosophical Society.
    Publisher
    IOP Publishing
    Journal
    Nanotechnology
    DOI
    10.1088/0957-4484/24/27/275501
    PubMed ID
    23759938
    ae974a485f413a2113503eed53cd6c53
    10.1088/0957-4484/24/27/275501
    Scopus Count
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