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Design and Modeling of Carbon Nanotube Electromechanical Switches for Logic Device Application

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Abstract:

Nanoelectromechanical switches consisting of carbon nanotubes suspended over metal electrodes are presented and their electromechanical responses are investigated. The device operates as transistors with the suspended part of the nanotube bent to touch metal electrodes via electrostatic force by applying voltage. The device is modeled using multiphysics simulation. Assuming continuum mechanics the nonlinear deformation of the nanotube is simulated using reduced order method. In particular, singly and doubly clamped nanotubes under electrostatic actuation are investigated and the pull-in voltage of the device, a key design parameter, are predicted and emphasized. These models provide a guide on the effect of the various geometrical variables and insight into the design of nanoswitches for logic device application.

Keywords: MULTIPHYSICS MODELING; NANO SWITCH; NEMS DEVICE; PULL-IN VOLTAGE

Document Type: Research Article

DOI: https://doi.org/10.1166/jctn.2011.1910

Publication date: 2011-10-01

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  • Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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