World’s First Photothermal Filter that Kills Coronavirus

Korean scientists applied new technology to HEPA filters that kills 99.9% of viruses.

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High-efficiency particulate air filters, better known as HEPA filters, have been around since the 1940s. According to a recent Inquirer.net article, scientists in Seoul, South Korea have developed an updated version that kills 99.9% of influenza and COVID-19 viruses. This is thanks to the application of new photothermal technology that absorbs light energy and converts it into heat energy. It’s been used for drug delivery, cell death, and solar batteries.

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