[10p-PA3-1~21] 12.7 Biomedical Engineering and Biochips

[10p-PA3-18] An approach for elimination of non-specific adsorption on electrochemical impedance biosensor

〇Haruka Honda¹, Hitoshi Ohnuki¹, Daiju Tsuya², Haiyun Wu¹, Hideaki Endo¹ (1.Tokyo Univ. of Marine Sci. and Tech., 2.NIMS)

Keywords:Biosensor, Electrochemical impedance spectroscopy, Parallel plates electrode

Electrochemical impedance biosensor is a sensor, signal of which is a change in the surface resistance caused by adsorption of detection targets on the probe molecules arising specific adsorption to the detection targets on the electrode surface. One of the problems of this sensor is that the contribution of non-specific adsorption has not been eliminated. In this presentation, we are going to propose a method to eliminate the contribution of non-specific adsorption by using parallel plate electrodes and evaluation based on conductance.