Microfluidic and Label-Free Multi-Immunosensors Based on Carbon Nanotube Microelectrodes
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概要
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We fabricated microfluidic and label-free multi-immunosensors by the integration of carbon nanotube (CNT)-arrayed electrodes and microchannels with pneumatic micropumps made of poly(dimethylsiloxane). In the microfluidic systems, four kinds of sample solutions were transported from each liquid inlet to microchannels using six pneumatic micropumps. As a result, two kinds of antibodies were immobilized onto different CNT electrodes using the microfluidic systems. Next, two kinds of cancer markers, prostate specific antigen and human chorionic gonadotropin in phosphate buffer solution, were simultaneously detected by differential pulse voltammetry. Therefore, microfludic multi-immunosensors based on CNT electrodes and pneumatic micropumps are useful for the development of multiplex hand-held biosensors.
- 2009-06-25
著者
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Tamiya Eiichi
Department Of Applied Physics Graduate School Of Engineering Osaka University
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Maehashi Kenzo
The Institute Of Scientific And Industrial Research Osaka University
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Takamura Yuzuru
School Of Chemical Materials Science Japan Advanced Institute Of Science And Technology
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Matsumoto Kazuhiko
The Institute Of Scientific And Industrial Research Osaka University
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Tsujita Yuichi
The Institute Of Scientific And Industrial Research Osaka University
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Chikae Miyuki
School Of Materials Science Japan Advanced Institute Of Science And Technology
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