http://www.outdoorlanternsonsale.com/micro-light/
how to measure the resonance mode of a micro-bridge?
I shine a laser to the micro-bridge and apply AC signal to electrically actuated the micro-bridge. I then use the reflection of the laser light to determine if it's resonant. If the reflection of laser spot becomes wider, then I would say the micro-bridge is in resonance. However, this method can't tell me which mode I am seeing. Is there any way that I can know the modes?
Thank you.
Would the lowest frequency at which this occurs be the primary mode? The other resonance frequencies should be multiples of that?
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