Nanoparticles sniff at disease substances in our breath
Physician Hossam Haick has developed a new electronic nose that can diagnose diseases based on the specific make-up of substances they emit in a person’s breath. The “nose” detects the same volatile organic compounds as our own nose, only it is much more sensitive. The person’s breath is sent past a layer of nanoparticles, which are electrically conductive. The nanoparticles are surrounded by an organic material that detects the smelling gases, and when the material interacts with the gases, the electrical resistance changes. Each substance gives off a different electric signal, which is analysed by a computer, and by comparing the signal to a database of the special “scent marks” of diseases, the diagnosis is made.
THE SENSOR CONSISTS OF NANOPARTICLES, THAT CONVERT PHEROMONES INTO AN ELECTRIC SIGNAL.
Physician Hossam Haick breathes on an electronic nose sensor, which transmits data to a computer.