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Influence of Water on the Frequency of Carbon Nanotube Oscillators

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Water molecules, which may either be introduced during fabrication of devices or absorbed from servicing environment, affect the performance and reliability of nanodevices and nanosystems. We investigate via theoretical analysis and molecular dynamics simulation the effect of water molecules on the vibration behavior of a double-walled carbon nanotube-based oscillator. It is found that water confined between the two nanotubes may significantly affect the oscillation frequency of the oscillator as a result of the enhancement of van der Waals interaction. An analytical expression is derived for the oscillation frequency in terms of the physical and geometrical parameters of carbon nanotubes and water. The theoretical results have a good agreement with molecular dynamics simulations.


Document Type: Research Article

Publication date: July 1, 2008

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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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