Journal
APPLIED PHYSICS LETTERS
Volume 102, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4793234
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- DARPA [W31P4Q-11-1-0003]
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Thin-film microcrystalline diamond micromechanical resonators with mechanical quality factor limited by thermoelastic dissipation in the diamond film are demonstrated. Surface micromachined double ended tuning fork resonators were fabricated from in-situ boron doped microcrystalline diamond films deposited using hot filament chemical vapor deposition. Time-domain thermoreflectance measurements show thermal conductivity of 110 W m(-1) K-1 for heat transport through the thickness of the diamond film. Measurement of the quality factor of resonators spanning a frequency range 0.5-10MHz shows a maximum Q = 81 646 and demonstrates good agreement with quality factor limited by thermoelastic dissipation using 100 W m(-1) K-1 for the in-plane thermal conductivity of the diamond film. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4793234]
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