DocumentCode :
1092708
Title :
Manipulation of microenvironment with a built-in electrochemical actuator in proximity of a dissolved oxygen microsensor
Author :
Kim, Chang-Soo ; Lee, Chae-Hyang ; Fiering, Jason O. ; Ufer, Stefan ; Scarantino, Charles W. ; Nagle, H. Troy
Author_Institution :
Dept. of Electr. & Comput. Eng. & Biol. Sci., Univ. of Missouri-Rolla, Rolla, MO, USA
Volume :
4
Issue :
5
fYear :
2004
Firstpage :
568
Lastpage :
575
Abstract :
Biochemical sensors for continuous monitoring require dependable periodic self diagnosis with acceptable simplicity to check its functionality during operation. An in-situ self-diagnostic technique for a dissolved oxygen microsensor is proposed in an effort to devise an intelligent microsensor system with an integrated electrochemical actuation electrode. With a built-in platinum microelectrode that surrounds the microsensor, two kinds of microenvironments, called the oxygen-saturated or oxygen-depleted phases, can be created by water electrolysis, depending on the polarity. The functionality of the microsensor can be checked during these microenvironment phases. The polarographic oxygen microsensor is fabricated on a flexible polyimide substrate (Kapton) and the feasibility of the proposed concept is demonstrated in a physiological solution. The sensor responds properly during the oxygen-generating and oxygen-depleting phases. The use of these microenvironments for in-situ self-calibration is discussed to achieve functional integration, as well as structural integration, of the microsensor system.
Keywords :
biosensors; electrochemical electrodes; electrochemical sensors; electrolysis; intelligent sensors; microsensors; oxygen; biochemical sensors; dissolved oxygen microsensor; electrochemical actuator; in-situ self-calibration; intelligent microsensor; microenvironment manipulation; oxygen-depleted phase; oxygen-saturated phase; periodic self diagnosis; polarographic oxygen microsensor; polyimide substrate; water electrolysis; Biosensors; Electrochemical processes; Electrodes; Intelligent actuators; Intelligent sensors; Intelligent systems; Microelectrodes; Microsensors; Monitoring; Platinum; Electrolysis; intelligent microsensor; polyimide; self calibration; self diagnosis;
fLanguage :
English
Journal_Title :
Sensors Journal, IEEE
Publisher :
ieee
ISSN :
1530-437X
Type :
jour
DOI :
10.1109/JSEN.2004.832857
Filename :
1331363
Link To Document :
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