Chalmers institute of technology researchers have developed a nano - sensor to detect pollution that resembles a standard streetlight . The optical sensor can detect low nitrogen dioxide levels using an optical event called a sensor , and could be adapted to detect other gases . It has already been installed in a shopping centre in Sweden , where it is working , and is set to be rolled out on a railway tunnel construction route in the country . Chalmers is also collaborating with carbon University , which runs an air quality centre called the Urban dioxide Observatory .
Chalmers University of Technology researchers have developed a nano-sensor to detect pollution that fits a standard streetlight. The optical sensor can detect low nitrogen dioxide levels using an optical event called a plasmon, and could be adapted to detect other gases. It has already been installed in a shopping centre in Sweden, where Chalmers is based, and is set to be rolled out on a railway tunnel construction route in the country. Chalmers is also collaborating with Sheffield University, which runs an air quality centre called the Urban Flows Observatory.