Wireless sensors for N95 masks could enable easier, more accurate decontamination

(Graphic of a container storing small shelves of N95 masks with small red sensors attached to the masks. It also shows a phone with graphs corresponding to data gathered from the sensors.) — An illustration of the proposed research to instrument ovens with wirelessly powered sensors. (Graphic courtesy of Ben Cyr and Dr. Sara Rampazzi of U-M CSE.)

Tiny wireless sensors for recycled N95 masks could verify, in real time, whether the respirators are being exposed to proper decontamination conditions.

They’re being developed and tested at the University of Michigan through a new National Science Foundation RAPID COVID-19 grant.

The batteryless sensors are designed to provide more accurate and less cumbersome monitoring during the decontamination of protective masks for medical workers. In an effort to ensure availability of N95 masks when supplies are still tight, the devices help to ensure sufficient heat and humidity is used in decontamination systems.

The project is a joint effort between Fu, Ph.D. student Yan Long, and Co-PI Dr. Sara Rampazzi, who recently accepted a tenure-track position at the University of Florida.