Surface-modified Diamond Field-effect Transistors for Enzyme-immobilized Biosensors
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概要
- 論文の詳細を見る
The enzyme sensors using electrolyte-solution-gate diamond field effect transistors (SGFETs) have been developed for the first time. The hydrogen-terminated surface channel of the FETs was modified into partially aminated and oxygen-terminated (H-A-O-terminated) with irradiation of ultraviolet in an ammonia environment. The pH response of that is obtained about 50 mV/pH at pH 2–10. The concentration of substrates (urea or glucose) in the electrolyte solution has been detected by the pH change due to the bio-catalyzed effect of enzyme (urease or glucose oxidase), which is immobilized on the channel of SGFETs. The sensitivity of urea and glucose is approximately 30 mV/decade and 20 mV/decade respectively.
- Japan Society of Applied Physicsの論文
- 2004-06-15
著者
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Kawarada Hiroshi
School Of Science & Engineering Waseda University
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UMEZAWA Hitoshi
School of Science and Engineering
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SONG Kwang-Soup
School of Science and Engineering
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KANAZAWA Hirofumi
School of Science and Engineering, Waseda University
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Song Kwang-Soup
School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
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Degawa Munenori
School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
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Nakamura Yusuke
School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
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Umezawa Hitoshi
School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
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Kanazawa Hirofumi
School of Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, Japan
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