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    • 63. 发明授权
    • Integrated capacitive microfluidic sensors method and apparatus
    • 集成电容微流体传感器的方法和装置
    • US07796371B2
    • 2010-09-14
    • US11830581
    • 2007-07-30
    • Jun XieJason ShihYu-Chong Tai
    • Jun XieJason ShihYu-Chong Tai
    • H01G7/00
    • G01N27/226B81B7/02B81B2201/0292B81B2201/058G01L9/0042G01L9/0072
    • A micro fluidic device and method for capacitive sensing. The device includes a fluid channel including an inlet at a first end and an outlet at a second end, a cavity region coupled to the fluid channel, and a polymer based membrane coupled between the fluid channel and the cavity region. Additionally, the device includes a first capacitor electrode coupled to the membrane, a second capacitor electrode coupled to the cavity region and physically separated from the first capacitor electrode by at least the cavity region, and an electrical power source coupled between the first capacitor electrode and the second capacitor electrode and causing an electric field at least within the cavity region. The polymer based membrane includes a polymer.
    • 一种用于电容式感测的微流体装置和方法。 该装置包括流体通道,其包括在第一端处的入口和在第二端处的出口,耦合到流体通道的空腔区域以及耦合在流体通道和腔区域之间的基于聚合物的膜。 另外,该器件包括耦合到膜的第一电容器电极,耦合到空腔区域的第二电容器电极,并且至少通过腔区域与第一电容器电极物理分离;以及电源,耦合在第一电容器电极和 所述第二电容器电极至少在所述腔区域内引起电场。 基于聚合物的膜包括聚合物。
    • 65. 发明授权
    • Resonance-induced sensitivity enhancement method for conductivity sensors
    • 电导率传感器的共振诱导灵敏度增强方法
    • US07629797B2
    • 2009-12-08
    • US11697060
    • 2007-04-05
    • Yu-Chong TaiChi-yuan ShihWei LiSiyang Zheng
    • Yu-Chong TaiChi-yuan ShihWei LiSiyang Zheng
    • G01R27/26
    • G01N27/023G01N15/1056G01N15/12G01N27/4473G01N2030/645G01R27/22
    • Methods and systems for improving the sensitivity of a variety of conductivity sensing devices, in particular capacitively-coupled contactless conductivity detectors. A parallel inductor is added to the conductivity sensor. The sensor with the parallel inductor is operated at a resonant frequency of the equivalent circuit model. At the resonant frequency, parasitic capacitances that are either in series or in parallel with the conductance (and possibly a series resistance) is substantially removed from the equivalent circuit, leaving a purely resistive impedance. An appreciably higher sensor sensitivity results. Experimental verification shows that sensitivity improvements of the order of 10,000-fold are possible. Examples of detecting particulates with high precision by application of the apparatus and methods of operation are described.
    • 用于提高各种电导率传感装置的灵敏度的方法和系统,特别是电容耦合的非接触电导检测器。 并联电感器被添加到电导率传感器。 具有并联电感器的传感器以等效电路模型的谐振频率工作。 在谐振频率下,与电导串联或并联的寄生电容(和可能的串联电阻)基本上从等效电路中去除,留下纯电阻阻抗。 传感器敏感度会更高。 实验验证表明灵敏度提高可达10,000倍。 描述了通过应用该装置和操作方法检测高精度的微粒的实例。