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    • 2. 发明公开
    • Insulated substrate impedance transducer
    • Isolierter Substratimpedanzwandler
    • EP1898211A1
    • 2008-03-12
    • EP06018835.6
    • 2006-09-08
    • Université Catholique De LouvainFacultés Universitaires Notre-Dame de la Paix
    • Pampin, Rémi SébastienFlandre, DenisMoreno-Hagelsieb, LuisFoultier, BorisRemacle, José
    • G01N27/414G01N27/12
    • G01N27/414C12Q1/6816C12Q1/6825G01N33/48728C12Q2565/607
    • Electronic transducer (10) and a method for detecting and/or characterising target materials or physicochemical stimuli in an external medium (8) using the electronic transducer (10). The electronic transducer (10) comprises a sensing element (3) featuring a variable conductance when exposed to a stimulus from the external medium and a first and second electrode (5a,5b) spaced apart on or in a sensing material surface of a substrate, the sensing element being provided in or on the substrate and being located between the first and the second electrodes (5a,5b) forming a pair of sensing electrodes for sensing a change in conductance of the sensing element (3) in a direction substantially parallel to the sensing material surface, at least one of the sensing electrodes (5a,5b) being electrically insulated from the sensing element (3) by a dielectric layer (4), so as to be capacitively coupled to the sensing element (3). An insulating layer or target specific layer (7) may optionally be provided covering the sensing element (3) and optionally the sensing electrodes and being adapted for contact with the external medium (8). Electrical measurements made between the pair of sensing electrodes (5a,5b) are influenced by the impedance of the sensing element formed as a channel (3) which is affected by the presence of the medium (8) to be tested.
    • 电子传感器(10)以及使用电子换能器(10)检测和/或表征外部介质(8)中的目标材料或物理化学刺激的方法。 电子换能器(10)包括感测元件(3),其在暴露于来自外部介质的刺激时具有可变电导,以及在衬底的感测材料表面上或其中的间隔开的第一和第二电极(5a,5b) 所述感测元件设置在所述基板中或所述基板上并且位于所述第一和第二电极(5a,5b)之间,形成一对感测电极,用于感测所述感测元件(3)在基本上平行于 感测材料表面,至少一个感测电极(5a,5b)通过电介质层(4)与感测元件(3)电绝缘,以便电容耦合到感测元件(3)。 可以可选地设置覆盖感测元件(3)和可选地感测电极并且适于与外部介质(8)接触的绝缘层或目标特定层(7)。 在一对感测电极(5a,5b)之间进行的电测量受到作为受测试介质(8)的存在影响的通道(3)形成的感测元件的阻抗的影响。