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    A Resonant Gas Sensor Based on Multimode Excitation of a Buckled Microbeam

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    Name:
    full paper gas_sensor IEEE Sensors .pdf
    Size:
    755.2Kb
    Format:
    PDF
    Description:
    Accepted manuscript
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    Type
    Article
    Authors
    Hajjaj, Amal cc
    Jaber, Nizar cc
    Alcheikh, Nouha
    Younis, Mohammad I. cc
    KAUST Department
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2019-10-30
    Online Publication Date
    2019-10-30
    Print Publication Date
    2020-02-15
    Permanent link to this record
    http://hdl.handle.net/10754/661496
    
    Metadata
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    Abstract
    We report a new gas sensing technique based on the simultaneous tracking of multiple modes of vibration of an electrothermally heated bridge resonator operated near the buckling point. The proposed technique maximizes the sensitivity of the sensor to changes in gases concentrations. We demonstrate a 200% frequency shift in contrast to 0.5% resistance change using the conventional resistive technique. The method also demonstrates selective identification for some gases without the need for surface functionalization of the microstructure. The proposed method is simple in principle and design and is promising for achieving practical low-cost gas sensors.
    Citation
    Hajjaj, A. Z., Jaber, N., Alcheikh, N., & Younis, M. I. (2020). A Resonant Gas Sensor Based on Multimode Excitation of a Buckled Microbeam. IEEE Sensors Journal, 20(4), 1778–1785. doi:10.1109/jsen.2019.2950495
    Sponsors
    This work was supported by the King Abdullah University of Science and Technology (KAUST).
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    IEEE Sensors Journal
    DOI
    10.1109/JSEN.2019.2950495
    Additional Links
    https://ieeexplore.ieee.org/document/8887495/
    ae974a485f413a2113503eed53cd6c53
    10.1109/JSEN.2019.2950495
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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