Microcrystalline diamond micromechanical resonators with quality factor limited by thermoelastic damping
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 18, 2013
- Source ID
- 10.1063/1.4793234
Entities
People
- Amir Heidari
- David A. Horsley
- David G. Cahill
- Hadi Najar
- Hseuh-an Yang
- Liwei Lin
- Mei-lin Chan
Organizations
- Defense Advanced Research Projects Agency
- University of California
- University of Illinois Urbana–Champaign