Published: Apr 26, 2020, 02:15 IST | Updated: Apr 26, 2020, 02:15 IST
As researchers scramble to find a way to safely disinfect N95 masks for reuse, many are turning to the man behind its virus-blocking technology. Peter Tsai invented the filtration fabric inside the mask nearly 30 years ago, and spent decades perfecting it, before retiring from the University of Tennessee last year.