Cold Plasma Air Sterilization (IMAGE) Drexel University Caption Researchers at Drexel University's C. & J. Nyheim Plasma Institute are modifying cold plasma sterilization technology, originally developed to deactivate anthrax spores in the air, to prevent airborne transmission of the coronavirus indoors. Credit Drexel University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.