P2.3.2 Visualization of Planar and Temporal Distribution of pH and Oxygen in Micro Flow Channel

Masayasu Suzuki, Hiroki Nozawa & Yasunori Iribe
FITC film for pH sensing or ruthenium complex film for dissolved oxygen sensing was prepared inside a Y-shaped micro flow channel by using microcontact printing. Then pH or oxygen distribution in the flow channel was imaged as a fluorescence image by using a microscope equipped with a high speed laser confocal scanner unit. Response time (90% response) of the pH sensor investigated with phosphate solution of pH 4.5 and 9.3 was ca. 3 sec. Response...