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    • 4. 发明申请
    • APPARATUS AND METHOD FOR DETECTING SUBSTANCES
    • 用于检测物质的装置和方法
    • US20110132773A1
    • 2011-06-09
    • US12452673
    • 2008-07-03
    • Dirk LiemersdorfRichard FixOliver WolstAlexander MartinMartin Le-Huu
    • Dirk LiemersdorfRichard FixOliver WolstAlexander MartinMartin Le-Huu
    • G01N27/414H01L29/772
    • G01N27/4148
    • An apparatus for detecting at least one substance present in a fluid flow includes at least one field effect transistor which acts as a measuring sensor, and at least one field effect transistor which acts as a reference element, the field effect transistors each having at least one source electrode, one drain electrode, and one gate electrode. The gate electrode of the field effect transistor which acts as the measuring sensor is sensitive to the at least one substance to be detected, and the gate electrode of the field effect transistor which acts as the reference element is essentially insensitive to the at least one substance to be detected. The source electrode of one of the field effect transistors and the drain electrode of the other of the field effect transistors are connected to one another and to a signal line. A method for detecting at least one substance present in a fluid flow by using the apparatus is also described, a potential of 0 volt being applied to the signal line and the current flowing on the signal line being measured.
    • 用于检测存在于流体流中的至少一种物质的装置包括至少一个用作测量传感器的场效应晶体管和至少一个作为参考元件的场效应晶体管,每个场效应晶体管具有至少一个 源电极,一个漏电极和一个栅电极。 用作测量传感器的场效应晶体管的栅电极对待检测的至少一种物质敏感,作为参考元件的场效应晶体管的栅电极对至少一种物质基本上不敏感 被检测。 场效应晶体管中的一个的源电极和另一个场效应晶体管的漏电极彼此连接并连接到信号线。 还描述了通过使用该装置来检测存在于流体流中的至少一种物质的方法,将对信号线施加0伏的电位,并测量在信号线上流动的电流。