Surface roughness influence on the quality factor of high frequency nanoresonators

G. Palasantzas*

*Corresponding author for this work

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Abstract

Surface roughness influences significantly the quality factor of high frequency nanoresonators for large frequency-relaxation times (omega tau > 1) within the non-Newtonian regime, where a purely elastic dynamics develops. It is shown that the influence of short wavelength roughness, which is expressed by the roughness exponent H for the case of self-affine roughness, plays a significant role in comparison with the effect of the long wavelength roughness parameters such as the rms roughness amplitude and the lateral roughness correlation length. Therefore, the surface morphology can play an important role in designing high frequency resonators operating within the non-Newtonian regime.
Original languageEnglish
Article number046106
Pages (from-to)046106-1 - 046106-3
Number of pages3
JournalJournal of Applied Physics
Volume103
Issue number4
DOIs
Publication statusPublished - 15-Feb-2008

Keywords

  • NANOMECHANICAL RESONATORS
  • MOLECULAR-DYNAMICS
  • NOISE
  • FLOW
  • OSCILLATORS
  • TURBULENCE
  • RESONANCE
  • DRIVEN
  • LIMITS

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