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Fabrication of a microbial carbon dioxide sensor using semiconductor fabrication techniques
Author(s) -
Suzuki Hiroaki,
Kojima Naomi,
Sugama Akio,
Takei Fumio,
Ikegami Kasumi,
Tamiya Eiichi,
Karube Isao
Publication year - 1989
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140010404
Subject(s) - fabrication , carbon dioxide sensor , photoresist , semiconductor , carbon dioxide , electrode , materials science , membrane , oxygen sensor , oxygen , carbon fibers , optoelectronics , analytical chemistry (journal) , chemical engineering , nanotechnology , chemistry , chromatography , composite material , organic chemistry , medicine , biochemistry , alternative medicine , pathology , layer (electronics) , engineering , composite number
A disposable bacterial CO 2 sensor has been fabricated using semiconductor techniques by immobilizing autotrophic bacteria on the sensitive area of a miniature Clark‐type oxygen electrode and covering them with another gas‐permeable membrane consisting of a negative photoresist formed directly on the gel. The response time of the CO 2 sensor was 2 to 3 minutes. A linear relationship for the NaHCO 3 concentration was obtained between 0.5 and 3.5 mM at 30°C and pH 5.5. The CO 2 sensor can be used up to 10 times.