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    High-Q Longitudinal Block Resonators With Annexed Platforms For Mass Sensing Applications

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    Date
    10/26/2010
    Author
    Hao, Zhili
    Ayazi, Farrokh
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    Abstract
    Disclosed are sensing apparatus, such as mass sensors, comprising longitudinal block resonators having annexed platforms that offer the improved mass sensitivity at micron scale, high-Q in air, simplicity of fabrication, and improved reliability. Exemplary mass sensors comprise a central block separated from a substrate. Two annexed platforms are coupled to the central block by way of two separating beams that are separated from the substrate. One or more anchors are coupled to the central block by way of support beams that are separated from the substrate by insulating material. One or more transducers are provided for actuating and sensing vibration of the central block and the annexed platforms. The transducers may employ capacitive and piezoelectric drive and sense schemes.
    URI
    http://hdl.handle.net/1853/57895
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