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Technology update

Jul 5, 2007

Carbon nanotubes on the look out for vitamins

A new bionanosensor made from a field-effect transistor (FET) containing carbon nanotubes has been unveiled by researchers in Japan. Takamichi Hirata of the Musashi Institute of Technology in Tokyo and colleagues say the sensor works by changing its impedance when it senses vitamins and reacts in just 60 s. The device could be used to study various biological processes, such as DNA transcription and replication, and antibody–antigen reactions.

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