A wireless magnetoelastic-sensing device for in situ evaluation of Pseudomonas aeruginosa biofilm formation

A wireless, passive magnetoelastic-sensing device is presented for the in situ, continuous, and real-time evaluation of the formation of Pseudomonas aeruginosa biofilms. The sensor, a polyurethane-coated magnetostrictive ribbon, is placed in a flowing system, and both the resonance frequency and amplitude of the sensor are wirelessly monitored through magnetic field telemetry. The sensor platform appears to be of great utility for the in situ evaluation of biofilms formation.