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    • 9. 发明申请
    • A METHOD OF MEASURING A CAPACITANCE AND A USE
    • 测量电容和使用的方法
    • WO2012060758A1
    • 2012-05-10
    • PCT/SE2011/000192
    • 2011-10-31
    • CAPSENZEHEDSTRÖM, MartinERLANDSSON, DagMATTIASSON, BoLARSSON, Joakim
    • HEDSTRÖM, MartinERLANDSSON, DagMATTIASSON, BoLARSSON, Joakim
    • G01N27/22G01R27/26
    • G01N27/22G01N27/228G01N27/3276G01R27/26G01R27/2605
    • The invention relates to a method of measuring a capacitance of a sensor with a capacitance (C). The sensor has a working electrode that is coated by an insulating layer and a ligand forming an affinity surface. The method involves the steps of bringing the electrode into contact with an analyte, supplying a constant first current (li), and a constant second current (l2) of opposite direction to the first current (li), and a constant third current (l3) of same direction as the first current (li) during determined time periods to the sensor. Further the method include sampling the potential (V) built up across the sensor, and calculating the capacitance of the sensor by means of the inclination (B, D, F, H) of a potential curve received in response to the current supply. Also, the invention relates to a use of a method for detection of an interaction between a ligand and an analyte.
    • 本发明涉及一种用电容(C)测量传感器电容的方法。 传感器具有由绝缘层和形成亲和表面的配体涂覆的工作电极。 该方法包括使电极与分析物接触的步骤,提供恒定的第一电流(li)和与第一电流(li)相反方向的恒定的第二电流(I2)和恒定的第三电流(13 )与在传感器的确定时间段期间的与第一电流(li)相同的方向。 此外,该方法包括对跨传感器建立的电位(V)进行采样,并且通过响应于当前电源接收的电位曲线的倾斜度(B,D,F,H)来计算传感器的电容。 此外,本发明涉及用于检测配体和分析物之间的相互作用的方法的用途。