High sensitivity nanostructure incorporated interdigital silicon based capacitive accelerometer

Mehran, M.; Mohajerzadeh, S.

doi:10.1016/j.mejo.2014.10.008

Cited by 6 publications

(1 citation statement)

References 34 publications

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“…For improving the tradeoff between the resonant frequency and sensitivity in the accelerometer design, many studies have focused on new sensing mechanisms such as silicon nanowires in order to obtain higher sensitivity [ 17 , 18 , 19 , 20 ]. However, these methods depend on new processes or new materials, and they are difficult to manufacture in mass production.…”

Section: Introductionmentioning

confidence: 99%

A Novel Piezoresistive Accelerometer with SPBs to Improve the Tradeoff between the Sensitivity and the Resonant Frequency

Zhao

Jiang

et al. 2016

Sensors

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For improving the tradeoff between the sensitivity and the resonant frequency of piezoresistive accelerometers, the dependency between the stress of the piezoresistor and the displacement of the structure is taken into consideration in this paper. In order to weaken the dependency, a novel structure with suspended piezoresistive beams (SPBs) is designed, and a theoretical model is established for calculating the location of SPBs, the stress of SPBs and the resonant frequency of the whole structure. Finite element method (FEM) simulations, comparative simulations and experiments are carried out to verify the good agreement with the theoretical model. It is demonstrated that increasing the sensitivity greatly without sacrificing the resonant frequency is possible in the piezoresistive accelerometer design. Therefore, the proposed structure with SPBs is potentially a novel option for improving the tradeoff between the sensitivity and the resonant frequency of piezoresistive accelerometers.

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Section: Introductionmentioning

confidence: 99%