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A copper-based foam filter that could someday be used in facemasks or air cleaners sits on the bristles of a plant, illustrating its light-weight nature.

Research by Physics Professor Shows Copper Foam Could Be Highly Efficient, Durable Filter for Reusable Masks and Air Cleaners

March 25th, 2021

During the COVID-19 pandemic, people have grown accustomed to wearing face masks, but many coverings are fragile and not easily disinfected. In a recent Nano Letters article, Department of Physics professor Kai Liu and his group of researchers have transformed copper nanowires into metal foams that could be used in face masks and air filtration systems, which are more durable and have the potential to effectively filter out microbes.