abstract |
An object of the present invention is to provide a biosensor having a good response characteristic, in which a reaction layer containing an enzyme is rapidly dissolved in a small amount of a sample solution, and an enzyme reaction can be effectively used. In a biosensor comprising an electrically insulating substrate, an electrode system having a working electrode and a counter electrode formed on the substrate, and a reaction layer formed on or near the electrode system, at least the reaction The surface of the layer is made porous. [Selection diagram] Fig. 1 |