656782 external_news 1648582494 1648582494 Shortly after the pandemic began in 2020, researchers began examining the materials used for face masks in order to find the best protection available. Researchers from Georgia Tech included Nga Lee (Sally) Ng, professor in the School of Earth and Atmospheric Sciences with a joint appointment in the School of Chemical and Biomolecular Engineering. Lee, an aerosol scientist, and her research team tested 33 different commercially available materials such as single-layer woven fabrics (like cotton and polyester), mixed fabrics, non-woven materials, and materials used in hospitals. 

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