20.91kHz Resonator in Vacuum 2s Decay Time after Excitation Removal http://youtu.be/A26WyPOqDxE

khzresonatorinvacuum2sdecaytimeafterexcitationremoval.jpg

http://youtu.be/A26WyPOqDxE

This is a comb drive resonator vibrating at 27 kHz inside a vacuum chamber. After one second, the sinusoidal input voltage driving the resonator is turned off. The amplitude visibly decays slowly due to the resonator's very high quality factor (Q>20000).

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