> Indeed there is an physical limitation for the Q of piezoelectric > resonators, which is given by phonon interactions etc. For quartz this > limit is given approximately by Q*f = 15E12. See attached graph (sorry, in > German).
NIce figure! Here's a similar one for MEMS resonators (mostly Si I think) in a paper by Ghaffari et al. from 2013: http://www.nature.com/articles/srep03244 >From the figure it looks like the MEMS resonator for on a line Q*f = 5e12 Anders _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
