Surface roughness influence on the quality factor of high frequency nanoresonators

Details Surface roughness influence on the quality factor of high frequency nanoresonators Surface roughness influence on the quality factor of high frequency nanoresonators

2008-02-18

arxiv.org/abs/0802.2507v1

Physics

Fluid Dynamics

13 pages, 4 figures, To appear in J. Appl. Phys. (2008)

Scientific paper

10.1063/1.2874790

Surface roughness influences significantly the quality factor of high frequency nanoresonators for large frequency - relaxation times within the non-Newtonian regime, where a purely elastic dynamics develops. It is shown that the influence of sort wavelength roughness, which is expressed by the roughness exponent H for the case of self-affine roughness, plays 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 important role in designing high-frequency resonators operating within the non-Newtonian regime.

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