Light propagation within N95 filtered face respirators: A simulation study for UVC decontamination
| Autor: | Aldrich Ngan, Fynn Schwiegelshohn, Angelica Manalac, Ron Hofmann, Vaughn Betz, Tanner Young-Schultz, Lothar Lilge, Chengjin Wang, Abdallatif Satti Abdalrhman, Frank X. Gu, Madrigal Weersink |
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| Rok vydání: | 2020 |
| Předmět: |
business.product_category
Materials science Ultraviolet Rays Monte Carlo method General Physics and Astronomy medicine.disease_cause 01 natural sciences General Biochemistry Genetics and Molecular Biology 010309 optics 03 medical and health sciences 0302 clinical medicine Optics Light source Light propagation 0103 physical sciences Equipment Reuse medicine Humans General Materials Science Respirator Decontamination Ventilators Mechanical business.industry 010401 analytical chemistry General Engineering COVID-19 General Chemistry Human decontamination 030210 environmental & occupational health 0104 chemical sciences Disinfection Face (geometry) Environmental science Fluence rate business Ultraviolet |
| Zdroj: | Journal of Biophotonics |
| ISSN: | 1864-0648 1864-063X |
| DOI: | 10.1002/jbio.202000232 |
| Popis: | This study presents numerical simulations of UVC light propagation through seven different filtered face respirators (FFR) to determine their suitability for UV germicidal inactivation (UVGI). UV propagation was modelled using the FullMonte program for two external light illuminations. The optical properties of the dominant three layers were determined using the inverse adding doubling method.The resulting fluence rate volume histograms and the lowest fluence rate recorded in the modelled volume, sometimes in the nW cm-2, provide feedback on a respirator’s suitability for UVGI and the required exposure time for a given light source. While UVGI can present an economical approach to extend an FFR’s useable lifetime, it requires careful optimization of the illumination setup and selection of appropriate respirators.Abstract Figure |
| Databáze: | OpenAIRE |
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