Modeling the static response and pull-in instability of CNT nanotweezers under the Coulomb and van der Waals attractions

Farrokhabadi, Amin. and Rach, Randolph. and Abadyan, Mohamadreza. (2013) Modeling the static response and pull-in instability of CNT nanotweezers under the Coulomb and van der Waals attractions. PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 53. pp. 137-145.

Full text not available from this repository.

Abstract

In this paper, the static response and pull-in instability of nanotweezers fabricated from carbon nanotubes (CNT) are theoretically investigated considering the effects of the Coulomb electrostatic and van der Waals molecular attractions. For this purpose, a nanoscale continuum model is employed to obtain the nonlinear constitutive equation of this nano-device. The van der Waals attraction is computed from the simplified Lennard-Jones potential. In order to solve the nonlinear constitutive equation of the nanotweezers, three different approaches, e.g. developing a lumped parameter model, applying the analytical modified Adomian decomposition (MAD) and using a commercial numerical integration routine, are employed. The obtained results are in good agreement with experimental measurements as reported in the literature. As a case study, we have investigated a freestanding nanotweezer and have determined the detachment length and minimum initial gap. Furthermore, range of dominancy of the molecular attraction has been discussed. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.

Item Type: Article
Uncontrolled Keywords: Nanotweezers; Pull-in instability; Continuum model; Modified Adomian decomposition; Lumped parameter model; Numerical solution
Subjects: QT physiology > physics.mathematics.engineering
Divisions: Faculty of Medicine
Depositing User: zahra bagheri .
Date Deposited: 07 Aug 2017 09:18
Last Modified: 17 Feb 2018 06:55
URI: http://eprints.skums.ac.ir/id/eprint/2535

Actions (login required)

View Item View Item