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Kim, Sung Youb
Computational Advanced Nanomechanics (CAN) Lab
Research Interests
  • Computational Mechanics
  • Nanomechanics
  • Molecular Dynamics
  • FEM

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Utilizing Mechanical Strain to Mitigate the Intrinsic Loss Mechanisms in Oscillating Metal Nanowires

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Title
Utilizing Mechanical Strain to Mitigate the Intrinsic Loss Mechanisms in Oscillating Metal Nanowires
Author
Kim, Sung YoubPark, Harold S.
Keywords
NANOELECTROMECHANICAL SYSTEMS; SILICON CANTILEVERS; FORCE
Issue Date
2008-11
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.101, no.21, pp.215502 -
Abstract
We utilize classical molecular dynamics to study energy dissipation (the Q factors) of doubly clamped copper nanowire nanoresonators undergoing flexural oscillations. We find that the application of tensile strain effectively mitigates both the intrinsic surface and thermal losses, with improvements in Q by a factor of 3-10 across a range of operating temperatures. We also find that the nanowire Q factors are not dependent on the surface area to volume ratio, but instead their aspect ratio, and that the Q factors exhibit a 1/T0.70 dependence on the temperature T that is independent of strain.
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DOI
10.1103/PhysRevLett.101.215502
ISSN
0031-9007
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