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A fiber optic bio-sniffer (biochemical gas sensor) for alcohol gas monitoring with high sensitivity and high selectivity was fabricated and tested. The bio-sniffer is a gas sensor that uses molecular recognition of enzyme to improve selectivity. Usually, enzyme loses activity in the gas phase. Applying a flow-cell with a gas-intake window to the sensing probe, enzyme immobilized at the sensing region...
A flexible and thin oxygen sensor was developed for transcutaneous oxygen monitoring at conjunctiva. The wearable oxygen sensor (width: 3 mm, thickness: 84 mum) was fabricated by pouching KCl electrolyte solution between non-permeable membrane and gas-permeable membrane with Pt-and Ag/AgCl-electrodes patterned using photolithography and sputtering. This wearable oxygen sensor was applied to electrochemical...
An alcohol oxidase (AOD) immobilized gas-sensor (bio-sniffer) with stick-type configuration was developed for convenient analysis of ethanol vapor. The stick-type sniffer device was constructed in a sandwich configuration with a filter paper placed between carbon- and Ag/AgCl electrodes. The electrode-coated paper was shaped by knife into 2 mm-wide stick. In order to isolate a sensitive- (length:...
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