Numerical study of size-dependent instability of nems considering molecular force and elastic support conditions

Langari, A. and Yekrangi, A. and Soroush, R. and Fakhraei, M. and Hafshejani, M.K. (2014) Numerical study of size-dependent instability of nems considering molecular force and elastic support conditions. ARPN Journal of Engineering and Applied Sciences, 9 (3). pp. 382-387.

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Abstract

Nano-electromechanical systems (NEMS) sensors are recently used as powerful medical detectors for detection of disease. In this research paper, the modified couple stress non-classic continuum theory is applied to examine the size effect on the pull-in instability of beam-type NEMS sensor at submicron separations considering the van der Waals attraction. The proposed model takes the non-classic support conditions into account using rotational springs at supported end of the simply supported nano-beam. In order to solve the nonlinear constitutive equation of the nano-beams, finite difference numerical solution employed. The results reveal significant influence of the size dependency, elastic support conditions and van der Waals attraction on the pull-in characteristics of beam-type NEMS. © 2006-2014 Asian Research Publishing Network (ARPN).

Item Type: Article
Additional Information: cited By 0
Uncontrolled Keywords: nano-electromechanical systems (NEMS) sensor, modified couple stress theory, elastic boundary conditions, size effects, van der waals force.
Subjects: QT physiology > physics.mathematics.engineering
Divisions: Reserach Vice-Chancellar Department
Depositing User: zahra bagheri .
Date Deposited: 05 Aug 2017 04:53
Last Modified: 05 Aug 2017 04:53
URI: http://eprints.skums.ac.ir/id/eprint/2304

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