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    A model of electrostatically actuated MEMS and carbon nanotubes resonators for biological mass detection

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    Type
    Conference Paper
    Authors
    Bouchaala, Adam M.
    Younis, Mohammad I. cc
    KAUST Department
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2015
    Permanent link to this record
    http://hdl.handle.net/10754/565016
    
    Metadata
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    Abstract
    We investigate the dynamics of electrically actuated Micro and Nano (Carbon nanotube (CNT)) cantilever beams implemented as resonant sensors for mass detection of biological elements. The beams are modeled using an Euler-Bernoulli beam theory including the nonlinear electrostatic forces and the added biological elements, which are modeled as a discrete point mass. A multi-mode Galerkin procedure is utilized to derive a reduced-order model, which is used for the dynamic simulations. The frequency shifts due to added mass of Escherichia coli (E. coli) and Prostate Specific Antigen (PSA) are calculated for the primary and higher order modes of vibrations. Also, analytical expressions of the natural frequency shift under dc voltage and added mass have been developed. We found that using higher-order modes of vibration of MEMS beams or miniaturizing the size of the beam to Nano scale leads to significant improved sensitivity. © Springer International Publishing Switzerland 2015.
    Citation
    Bouchaala, A. M., & Younis, M. I. (2015). A Model of Electrostatically Actuated MEMS and Carbon Nanotubes Resonators for Biological Mass Detection. Lecture Notes in Mechanical Engineering, 501–512. doi:10.1007/978-3-319-17527-0_50
    Publisher
    Springer Nature
    Journal
    Design and Modeling of Mechanical Systems - II
    Conference/Event name
    6th International Congress on Design and Modeling of Mechanical Systems, CMSM 2015
    ISBN
    9783319175263
    DOI
    10.1007/978-3-319-17527-0_50
    ae974a485f413a2113503eed53cd6c53
    10.1007/978-3-319-17527-0_50
    Scopus Count
    Collections
    Conference Papers; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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