Summary #1496

This metal foam filters ultra-small particles like N95 masks, and it's recyclable

academictimes.com
  • New copper-based, reusable metal foam has near 100% air filtration efficiency for particles sized the size of COVID-19.
  • The foam starts with ultra-thin copper nanowires, and metal is deposited on them through electric currents.
  • Current filtration materials, such as those used in N95 masks, are easy to destroy, and not easily reusable.
  • Whereas the copper foam is a sustainable, reusable alternative that can be produced at scale for a very low cost, approximately $2 per filter.

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