EFFECT OF SURFACE LAYER ON ELECTROMECHANICAL STABILITY OF TWEEZERS AND CANTILEVERS FABRICATED FROM CONDUCTIVE CYLINDRICAL NANOWIRES

Maryam Keivani (), Ali Koochi (), Hamid M. Sedighi (), Mohamadreza Abadyan, Amin Farrokhabadi () and Abed Moheb Shahedin ()
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Maryam Keivani: Shahrekord University of Medical Sciences, Shahrekord, Iran
Ali Koochi: Mechanical Engineering Group, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
Hamid M. Sedighi: Mechanical Engineering Department, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz 6135743337, Iran
Mohamadreza Abadyan: Mechanical Engineering Group, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
Amin Farrokhabadi: Department of Aerospace Engineering, Semnan University, Semnan, Iran
Abed Moheb Shahedin: Department of Aerospace Engineering, Semnan University, Semnan, Iran

Surface Review and Letters (SRL), 2016, vol. 23, issue 02, 1-19

Abstract: Herein, the impact of surface layer on the stability of nanoscale tweezers and cantilevers fabricated from nanowires with cylindrical cross section is studied. A modified continuum based on the Gurtin–Murdoch surface elasticity is applied for incorporating the presence of surface layer. Considering the cylindrical geometry of the nanowire, the presence of the Coulomb attraction and dispersion forces are incorporated in the derived formulations. Three different approaches, i.e. numerical differential quadrature method (DQM), an approximated homotopy perturbation method (HPM) and developing lumped parameter model (LPM) have been employed to solve the governing equations. The impact of surface layer on the instability of the system is demonstrated.

Keywords: Surface layer; nanocantilever; nanotweezers; electromechanical stability (search for similar items in EconPapers)
Date: 2016
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DOI: 10.1142/S0218625X15501012

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