Scientists develop sensor to detect airborne particles

Prof Robert Dorey, head of Cranfield’s Microsystems and Nanotechnology Centre, explained to The Engineer that sensors to detect microsized particles already exist but the increased use of nanoparticles has driven the need to develop the new device.

‘We are trying to make a sensor that incorporates a layered coating that responds to nanomaterials that come into contact with it and counts how many there are in a given area,’ he said.

The exact composition of the layer and the way the sensor will be calibrated is subject to a patent application but Dorey did say that stationary and portable versions would be produced.

He added that manufacturers who work with nanomaterials and environmental groups would use the sensors.

Nanomaterials are used in products including suntan lotion, composites, wind turbine components, cars and sports equipment.

‘The interesting thing is how much of the nanomaterials we’re using to make things get through to the environment,’ commented Dr Sophie Rocks, a lecturer in nanotoxicology at Cranfield.