A novel piezoresistive sensitive structure for micromachined high-pressure sensors

Xin Guo, Rahman Hebibul, Zhuangde Jiang, Libo Zhao, Tingzhong Xu, Zhiming Zhao, Zhikang Li, Yu Xu, Wendi Gao

    Research output: Conference proceeding/Chapter in Book/Report/Chapterpeer-review

    Abstract

    A novel piezoresistive sensitive structure for micromachined high-pressure sensors is proposed. This structure employs several small cavities in a silicon bulk. When high pressure applied on all faces of the bulk, stress emerges between two cavities. The calculation for the variation of the resistance caused by stress in three-dimensional (3D) structure was discussed. According to 3D piezoresistive effect, the performance of the sensitivity and nonlinearity affected by the dimensions of cavity structure had been clarified. The simulation results show the optimized position for the resistance is in lower region. This sensitive structure is suitable for micromachined high-pressure sensors and the performance study set a guideline for designing micromachined high-pressure sensors with multi-cavities working in different range.
    Original languageEnglish
    Title of host publication2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages728-731
    Number of pages4
    ISBN (Print)9781509030590
    DOIs
    Publication statusPublished - 25 Aug 2017

    Publication series

    Name2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017

    Keywords

    • 3D piezoresistive effect
    • micromachined high pressure
    • piezoresistive sensitive structure
    • resistance arrangement

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