Scientists Develop Photothermal HEPA Filter that Eradicates 99 pct of COVID-19 Virus

SEOUL, May 4 (Korea Bizwire) — The Korea Institute of Energy Research said Tuesday it had developed a photothermal HEPA (high-efficiency particulate air) filter that eradicates fine and ultrafine dust as well as viruses. The research team coated commercial HEPA filters with photothermal materials like metal nanoparticles and carbon nanotubes, which turn light energy into [...]