Light relief

 
Published: Sunday 31 May 1998

Researchers have developed a hybrid pollution sensor in the form of a bioluminescent bacteria placed on a standard microchip. A common bacteria is genetically altered to glow in the presence of certain pollutants. This is placed in a porous polymer on the surface of a chip which contains a photo-detector. When the bacteria emits light, the chip emits an alarm. This could prove to be very useful to monitor pollution sites from where these tailor-made micro-organisms could send wireless back data on the monitoring ( Communications of the ACM , Vol 40, No 7).

Subscribe to Weekly Newsletter :

Comments are moderated and will be published only after the site moderator’s approval. Please use a genuine email ID and provide your name. Selected comments may also be used in the ‘Letters’ section of the Down To Earth print edition.