Ultrafast inactivation of SARS-CoV-2 with 266 nm lasers

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Abstract
Disinfection eliminates pathogenic microorganisms and ensures a biosafe environment for human beings. The rapid spread of COVID-19 is challenging traditional disinfection methods in terms of reducing harmful side effects and conducting faster processes. Spraying large-scale chemical disinfectants is harmful to individuals and the environment, while UV lamp and light-emitting diode (LED) disinfection still requires a long exposure time due to the low irradiance and highly divergent beam characteristics. Given that a laser maintains a high irradiance over a long distance, we studied the effectiveness of lasers as a new disinfection method, and the results show the capability for ultrafast inactivation of SARS-CoV-2 virus with a 266 nm laser. This work confirms UV lasers as a good candidate for disinfection.
Funding Information
  • National Natural Science Foundation of China (81927805)
  • Science and Technology Planning Project of Guangdong Province (2018B090944001)
  • Guangdong Major Project of Basic and Applied Basic Research (2019B030302003)

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