Scaling of dissipation in megahertz-range micromechanical diamond oscillators (Journal Article)
Published:
Monday, April 23, 2007
Journal: Applied Physics Letters,
Volume 90, Number 173502,
Pages 3
Authors (5 total): M. Imboden, A. Gaidarzhy, R. Mohanty, J. Rankin, B. W. Sheldon
Abstract: The authors report frequency and dissipation scaling laws for doubly clamped diamond resonators. The device lengths range from 10 to 19 microns corresponding to frequency and quality-factor ranges of 17 to 66 MHz and 600–2400, respectively. The authors find that the resonance frequency scales as 1/L^2 confirming the validity of the thin-beam approximation. The dominant dissipation comes from two sources: for the shorter beams, clamping loss is the dominant dissipation mechanism, while for the longer beams, surface losses provide a significant source of dissipation. The authors compare and contrast these mechanisms with other dissipation mechanisms to describe the data. © 2007 American Institute of Physics. DOI: 10.1063/1.2732163
