Electrochemical biosensor structure and measuring method using the same
First Claim
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1. An electrochemical biosensor electrode structure comprising:
- a working electrode and a reference electrode used as electrodes for sample measurement being arranged separately from each other in lengthwise direction of a sample insertion path,the working electrode and the reference electrode each having at least one projection and at least one recess alternately arranged on a portion thereof corresponding to the sample insertion path, the projection of the working electrode being correspondingly adjacent to the recess of the reference electrode, the recess of the working electrode being correspondingly adjacent to the projection of the reference electrode; and
at least two sample recognition electrodes used as electrodes for sample recognition being separated from each other and arranged adjacent and parallel to the working electrode and the reference electrode,wherein the working electrode and the reference electrode are separated from each other at a first separation distance in a portion corresponding to the sample insertion path,the at least two sample recognition electrodes are arranged in parallel and separated from each other at a second separation distance, with ends of each said sample recognition electrode spaced from one another and separately terminating adjacent the protection and recess of the working and reference electrodes, the projection and recess of the working and reference electrodes extending to the ends of each said sample recognition electrode, andthe first separation distance is greater than the second separation distance.
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Abstract
The present invention provides there is provided an electrochemical biosensor electrode structure that includes: a working electrode and a reference electrode used as electrodes for sample measurement being arranged separately from each other in lengthwise direction of a sample insertion path, the working electrode and the reference electrode each having at least one projection and at least one recess alternately arranged on a portion thereof corresponding to the sample insertion path, the projection of the working electrode being correspondingly adjacent to the recess of the reference electrode, the recess of the working electrode being correspondingly adjacent to the projection of the reference electrode; and at least two sample recognition electrodes used as electrodes for sample recognition being separated from each other and arranged adjacent and parallel to the working electrode and the reference electrode. The present invention minimizes the effect of the double layer capacitance and independently applies the sample recognition signal to accurately detect the sample insert time and velocity.
7 Citations
9 Claims
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1. An electrochemical biosensor electrode structure comprising:
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a working electrode and a reference electrode used as electrodes for sample measurement being arranged separately from each other in lengthwise direction of a sample insertion path, the working electrode and the reference electrode each having at least one projection and at least one recess alternately arranged on a portion thereof corresponding to the sample insertion path, the projection of the working electrode being correspondingly adjacent to the recess of the reference electrode, the recess of the working electrode being correspondingly adjacent to the projection of the reference electrode; and at least two sample recognition electrodes used as electrodes for sample recognition being separated from each other and arranged adjacent and parallel to the working electrode and the reference electrode, wherein the working electrode and the reference electrode are separated from each other at a first separation distance in a portion corresponding to the sample insertion path, the at least two sample recognition electrodes are arranged in parallel and separated from each other at a second separation distance, with ends of each said sample recognition electrode spaced from one another and separately terminating adjacent the protection and recess of the working and reference electrodes, the projection and recess of the working and reference electrodes extending to the ends of each said sample recognition electrode, and the first separation distance is greater than the second separation distance. - View Dependent Claims (2, 3, 4, 5)
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6. A structure for electrochemical biosensor comprising:
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a bottom plate comprising electrodes for sample measurement, and at least two sample recognition electrodes arranged separately from the electrodes for sample measurement on an insulating substrate, the electrodes for sample measurement including a working electrode and a reference electrode, the working electrode and the reference electrode being arranged separately from each other in lengthwise direction of a sample insertion path, the working electrode and the reference electrode each having at least one projection and at least one recess alternately arranged on a portion thereof corresponding to the sample insertion path, the projection of the working electrode being correspondingly adjacent to the recess of the reference electrode, the recess of the working electrode being correspondingly adjacent to the projection of the reference electrode, the at least two sample recognition electrodes being separated from each other and arranged adjacent and parallel to the working electrode and the reference electrode; a middle plate having a double-coated adhesive insulating film structure with the sample insertion path formed thereon defined as a notch through an end thereof, the sample insertion path having an end extending to and positioned above tips of the at least two sample recognition electrodes; and a top plate having at least two air exhaust through holes each being formed through the insulating substrate and each being positioned above the end of the sample insertion path and respective tips of the at least two sample recognition electrodes in correspondence to the end of the sample insertion path and respective tips of the at least two sample recognition electrodes, the at least two air exhaust holes being provided correspondingly to the ends of the at least two sample recognition electrodes to vertically overlap the ends of the at least two sample recognition electrodes, wherein the working electrode and the reference electrode are separated from each other at a first separation distance in a portion corresponding to the sample insertion path, the at least two sample recognition electrodes are arranged in parallel and separated from each other at a second separation distance, the first separation distance is greater than the second separation distance, and the tips of the at least two sample recognition electrodes spaced from one another and separately terminating working and reference electrodes the projection and recess of the working and reference electrodes extending normally to the tips of each said sample recognition electrode. - View Dependent Claims (7, 8, 9)
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Specification
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Current AssigneeAndong National University Industry Academic Cooperation Foundation
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Original AssigneeCenter For Integrated Smart Sensors Foundation (Center for Integrated Smart Sensors)
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InventorsLee, Young Tae, Lee, Seungro
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Primary Examiner(s)Noguerola, Alex
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Application NumberUS13/124,500Publication NumberTime in Patent Office2,010 DaysField of SearchUS Class Current204/403.02CPC Class CodesG01N 27/3272 Test elements therefor, i.e...
