1999 Fiscal Year Final Research Report Summary
Development of Amperometric Biochemical Imaging Sensors Using Photoconductive Materials
| Project/Area Number |
09359005
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
広領域
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| Research Institution | Osaka University |
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Principal Investigator |
IWASAKI Hiroshi Osaka University, the Institute of Scientific and Industrial Research(ISIR), Professor, 産業科学研究所, 教授 (00029901)
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| Co-Investigator(Kenkyū-buntansha) |
KITAGAWA Masatosi Matsushita El.Inds.Co.Ltd., Senior Researcher, 主任研究員
YOSHINOBU Tatsuo Osaka University, ISIR, Assistant Professor, 産業科学研究所, 講師 (30243265)
SAKATA Yoshiteru Osaka University, ISIR, Professor, 産業科学研究所, 教授 (60029874)
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| Project Period (FY) |
1997 – 1999
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| Keywords | light-addressable potentiometric sensor(LAPS) / chemical imaging sensor / electrolysis / ion diffusion coefficient / metal dot array / porphyrin / SAM / ion imaging sensor |
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| Research Abstract |
In this study, the chemical imaging sensor system was further developed to achieve higher performance and multifunctions that will meet the requirements of future applications. As an example, a dynamically changing electrochemical system was visualized and quantitatively analyzed. Visualization of chemical quantities other than pH was realized. A high-speed measurement system was proposed.
Firstly, the diffusion process of ions was observed by measuring the distribution of ion concentrations in the proximity of the electrode after electrolysis. The Gaussian distribution of the ion concentration was observed as derived from the Fick's law. The ionic diffusion constants were experimentally determined for various ions. Secoedly, a sensor with a Au dot array pattern was developed for visualization of the redox potential distribution. As an application, the photo response of the porphirin was measured. Finally, a high-speed measurement system was proposed for the chemical imaging sensor.
The technologies developed in this study can be combined and applied to chemical imaging of various specimens.
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