Patent ID: 11859167
Assignee: TOHOKU UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC C  G | IPC C  G

Claim 5:
6. A transducer in which a solution well capable of containing a solution and a biological sample immersed in the solution is mounted on a large-scale integration chip, and a plurality of working electrodes that each include an electrode surface supplying or receiving electrons to or from a chemical substance generated or consumed in the biological sample in the solution to cause an oxidation-reduction reaction are provided on the large-scale integration chip, wherein
all of the electrode surfaces have diameter dimensions del not more than 80 μm and are arrayed on one flat surface in a configuration in which a plurality of electrode rows are arranged in a second direction orthogonal to a first direction, each of the plurality of electrode rows having the plurality of the electrode surfaces which are arranged in a straight line in the first direction, a spacer is provided in the solution well, the spacer having a profile surface at a distance h1 in a direction perpendicular to the one flat surface, the distance h1 satisfying

h1=21.8(del+0.8)/(del+9.7)±5[μm],, the spacer inhibiting the biological sample from entering a region on a side with the one flat surface of the profile surface and allowing a dissolved substance in the solution to diffuse, and
a first wall plate impervious to the dissolved substance in the solution is provided between two of the electrode rows adjacent to each other, the first wall plate extending in the first direction alongside two or more electrode surfaces arranged in one of said two of the electrode rows, having a height not less than a height of the spacer from the one flat surface, such that the first wall plate reduces crosstalk in the second direction between said two of the electrode rows but the dissolved substance is not blocked from diffusing in the first direction in each of said two of the electrode rows.