Reusable Filters Augmented with Heating Microfibers for Antibacterial and Antiviral Sterilization

Yong Il Kim, Min Woo Kim, Seongpil An, Alexander L. Yarin, Sam S. Yoon

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Numerous threats to human health and ecosystems on earth exist due to air pollution and the spread of fatal diseases. Airborne pollutants and particulate matter (PM) pose serious public health risks. In addition, the emergence and spread of bacterial and viral diseases constantly threaten public health and safety. Although various approaches have been implemented thus far to protect humans from air pollution and exposure to diseases, several challenges remain to be addressed. In this study, we developed a hybrid air filter consisting of filtration, heating, and thermal insulation layers. The air filtration layer can effectively capture airborne PM1 particles (less than 1.0 μm in diameter). Furthermore, the heating layer enables the hybrid air filter to generate temperatures above 100 °C, and the insulation layer prevents the heat from being transferred to the other side (e.g., the human skin, if the hybrid air filter is used in a facemask). Since several bacteria and viruses are incapacitated under high temperatures, this hybrid air filter holds great promise for antibacterial and antiviral protection.

Original languageEnglish
Pages (from-to)857-867
Number of pages11
JournalACS Applied Materials and Interfaces
Issue number1
Publication statusPublished - 2021 Jan 13


  • coronavirus
  • facemask
  • filtration efficiency
  • heating metal microfiber film
  • polymer nanofiber filter

ASJC Scopus subject areas

  • Materials Science(all)


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