1. Flow-Through Portable Antivirus UV-C Optical Enclosures to be Used with Protective Masks
- Author
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Ozgur Selimoglu
- Subjects
2019-20 coronavirus outbreak ,Coronavirus disease 2019 (COVID-19) ,Article Subject ,business.industry ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,Flow (psychology) ,Irradiance ,Enclosure ,QC350-467 ,Optics. Light ,Sterilization (microbiology) ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,Optics ,Environmental science ,business - Abstract
UV-C light is an important disinfection tool against airborne viruses, while also being harmful if the light reaches the human skin. Body-attached reflective flow-through optical enclosures can be used for isolating the UV-C light from the user as well as elevating the irradiance level. In this study, we explain why air-sterilizing light enclosures are more effective than the expectations by introducing a dose multiplication factor of 4. As a result of omnidirectional illumination, air sterilization becomes more effective than surface disinfection if similar irradiance levels are measured from the enclosure wall. The methodology is explained by the design of a portable enclosure device primarily targeting the COVID-19 virus, and disinfection effectiveness better than 99.5% is demonstrated by biological tests.
- Published
- 2021
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