期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 110, 期 2, 页码 342-349出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2005.02.014
关键词
Clark oxygen sensor; miniaturization; O-2 plasma bonding; mu-TAS; poly(dimethylsiloxane)
A miniature Clark-type oxygen sensor has been integrated with a microstructure using a novel fabrication technique. The oxygen chip consists of a glass substrate with a three-electrode configuration, which is separated and connected by a groove, and a poly(dimethylsiloxane) (PDMS) container with an immobilized PDMS oxygen-permeable membrane. The assembly of the different substrates only uses the O-2 plasma bonding technique, and the fabrication temperatures do not exceed 95 degrees C. Characteristics of the miniature sensor include the fastest response time of 6.8 s. good linearity with a correlation coefficient of 0.995, and a long lifetime of at least 60 h. The present miniature Clark oxygen sensor can be readily integrated with a microfluidic system to form a mu-TAS. (C) 2005 Elsevier B.V. All rights reserved.
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