Abstract: An electrode tip including one auxiliary cell and a plurality of measurement cells on a substrate, where the auxiliary cell includes a reference electrode, a counter electrode, and an auxiliary cell-side working electrode, the measurement cell includes a driving electrode and a measurement cell-side working electrode, and the auxiliary cell-side working electrode and the measurement cell-side working electrode are electrically connected.

Abstract: An electrochemical measurement method for electrochemically measuring a chemical substance generated or consumed in a biological sample in a solution is provided which includes performing measurement by placing the biological sample at a distance away from an electrode surface in the direction perpendicular to the electrode surface. The distance is determined in advance on the basis of simulation in which a current flowing through a working electrode.

Abstract: In an electrochemical imaging method of, by applying voltages between working electrodes arranged in a measurement area and a counter electrode and causing the working electrodes to perform a redox reaction by giving and reception of electrons to and from a plurality of measurement target substances generated or consumed by a sample in an electrolytic solution to measure currents that flow through the individual electrodes, imaging images of density distributions of the measurement target substances based on distributions of the currents in the measurement area, the working electrodes are arranged in the measurement area in a manner of being arranged uniformly in each of a plurality of working electrode groups, each of the working electrode groups comprising a plurality of working electrodes, and in a manner of being mutually mixed; applied voltages specified for the working electrode groups, respectively, are simultaneously applied between the working electrodes and the counter electrode; any two working ele

Abstract: An electrode device for an electrochemical sensor chip includes an insulation sheet having an insulating property and including a top surface and a bottom surface opposite to each other in a thickness direction, and electrode members having a conductivity and held by the insulation sheet with the electrode members piercing the insulation sheet in a thickness direction, one ends of the electrode members located on the top surface side of the insulation sheet being connected to an analyte, the other ends located on the bottom surface side of the insulation sheet being connected to an electrodes of a transducer, at least the one ends of the electrode members being made of a mixture of conductive particles and an insulating material.

Abstract: An electrode device for an electrochemical sensor chip includes an insulation sheet having an insulating property and including a top surface and a bottom surface opposite to each other in a thickness direction, and electrode members having a conductivity and held by the insulation sheet with the electrode members piercing the insulation sheet in a thickness direction, one ends of the electrode members located on the top surface side of the insulation sheet being connected to an analyte, the other ends located on the bottom surface side of the insulation sheet being connected to an electrodes of a transducer, at least the one ends of the electrode members being made of a mixture of conductive particles and an insulating material.