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Durability and versatility. (a) Virus repellency of the super-repellent coatings on glass, fabric, and mask after abrasion. ND represents “not detected” and is denoted by the dashed line. Error bars denote standard deviation of three independent experiments. (b) Photos contrasting the retention of SARS-CoV-2-loaded droplets on various substrates: glove and mask coated with the SAP SiO2; button, doorknob, and clothing coated with the SHP SiO2.
