The man behind the mask4/7/2024 ![]() The technique, which earned him a US patent in 1995, uses an electric field to ionize the neutral air to generate ions and electrons, which then charge the nonwoven fibers through field and induction. In producing the masks, whose filters help block and contain a minimum of 95 percent of all particles, Tsai used a method called corona electrostatic charging. Tsai recently came out of retirement to work in conjunction with the UT Research Foundation on methods and testing that might provide a way for the masks to be safely reused, greatly improving the outlook for medical teams and first responders during the pandemic. The now-retired, longtime research faculty member of the Department of Material Science and Engineering is the architect behind the essential technology in N95 respirators, the ones in such high demand for use on the front lines in the fight to contain COVID-19. Peter Tsai may not be a household name, but odds are you know his work. ![]()
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