The light-addressable potentiometric sensor for multi-ion sensing and imaging |
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Authors: | Yoshinobu T Iwasaki H Ui Y Furuichi K Ermolenko Yu Mourzina Yu Wagner T Näther N Schöning M J |
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Institution: | The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan. nov@ecei.tohoku.ac.jp |
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Abstract: | The light-addressable potentiometric sensor (LAPS) is a semiconductor-based chemical sensor with an electrolyte-insulator-semiconductor structure. The LAPS can have many measuring points integrated on the sensing surface, which are individually accessed by a light beam. By modifying the measuring points with different materials, a single sensor plate can be used as a multi-analyte sensor. In this paper, instrumentation and application of LAPS to multi-ion sensing and imaging are described. As a new application of LAPS, potentiometric imaging of a microfluidic channel is proposed. |
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