Abstract:This paper presents an experimental investigation of the characteristics of dual plate thermal-piezoresistive MEMS resonators and self-sustained oscillators in different gases. It has been demonstrated that the natural frequency of such devices changes in different gases. Interestingly, for the same silicon structure, frequency shifts in opposite directions were observed when operated in a resonator versus a self-sustained oscillator configuration. Both thermal conductivity and density of the surrounding gas h… Show more
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