4. IISc scientists develop sensor to detect E. coli
bacterium
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Explanation:
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Explanation:
A group of scientists at the Indian Institute of Science
(IISc) has successfully designed a sensor to detect the presence
of harmful E. coli bacterium in food and drinking water.
The sensor has been designed by the research teams of Dr
Sai Siva Gorthi and Prof SundarrajanAsokan of Department of
Instrumentation and Applied Physics and Robert Bosch Centre
for Cyber Physical Systems, IISc
The sensor is designed using a photo-sensitive optical
fibre and is called a ‘bare Fiber Bragg grating (bFBG) sensor’,
which is coated with antibodies specific to E. coli. When a beam
of light comprising a band of wavelengths is passed through
the bFBG sensor, it reflects one particular wavelength of light.
When exposed to a sample in which e-coli cells are present, the
e-coli cells bind specifically to the sensor.