Microcrystalline diamond micromechanical resonators with quality factor limited by thermoelastic damping
Authors:
- 18 February 2013
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 102 (7) , 071901
Abstract
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 0.5–10 MHz 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.Keywords
Funding Information
- Defense Advanced Research Projects Agency (W31P4Q-11-1-0003)
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