Sensor employing impedance measurements

摘要: A sensor comprising an immobilised affinity component capable of interacting with analyte species and being associated a conducting polymer such that the interaction induces change in electrical properties polymer. An AC signal is applied to polymer, induced impedance resulting from measured. The measured at frequency or frequencies corresponding peak peaks relationship between for analyte. measurement may be made by reference imaginary real impedance. form layer bridging two electrodes which together define interdigitated electrode assembly.