Detection of resonator motion using piezoresistive signal...

Measuring and testing – Specimen stress or strain – or testing by stress or strain... – Specified electrical sensor or system

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C073S104000, C073S105000

Reexamination Certificate

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07552645

ABSTRACT:
A system containing a micro-mechanical or nano-mechanical device and a method of operating the same is provided. The device includes a resonator and a piezoresistive element connected to the resonator. The method includes AC biasing the piezoresistive element at a first frequency, driving the resonator at a second frequency different from the first frequency, and detecting a mechanical response of the resonator at one or both of a difference frequency and a sum frequency of the first and second frequencies.

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