Japanese scientists are developing a sensor that promises to provide new tools for rapid identification of influenza viruses, hepatitis B virus, mad cow disease pathogens and residual pesticides.
According to reports, scientists at the University of Hokkaido's founding scientific research institute recently identified a carbon nanotube sensor. The sensor is 1 to 5 microns long and 5 nanometers in diameter. If antigens and antibodies are added to the sensor silicon substrate, the type of virus can be quickly identified under power-on conditions.
Taking the identification of influenza viruses as an example, about 135 influenza viruses are known. When different viral antigens are combined with antibodies on a silicon substrate, the current changes differently, thereby identifying the virus species. Scientists believe that the sensitivity of this sensor can reach hundreds of thousands of times the traditional detection method.
Professor Yukio Takeshi, who is in charge of the research, said that it takes more than three hours to identify the influenza virus by traditional methods, and it is necessary to bring the virus samples back to a well-equipped research institute to detect the virus types using less than 10 carbon nanotube sensors. minute.
Researchers are perfecting such sensors, hoping to develop detection devices that are portable and can be used in field operations.
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