Optical Sensor Detects Bacteria in Minutes

Sep-08-16 Researchers have created an optical device that can detect the E. coli bacteria within minutes.

Developed by teams from the University of Quebec and the Indian Institute of Technology Kanpur, the optical device works by using a bacteriophage that will naturally attach to bacteria. The bacteriophage itself is bonded to the surface of an optical fiber, where it will latch onto any E.coli in the sample area. When light is emitted onto the surface of the sensor, the attached E. coli will alter its wavelength, indicating the presence of bacteria.

The sensor can also work efficiently in a wide range of temperatures, making it much more practical for on-site applications.

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