Abstract:
:Surface contact with virus is ubiquitous in the transmission pathways of respiratory diseases such as Coronavirus Disease 2019 (COVID-19), by which contaminated surfaces are infectious fomites intensifying the transmission of the disease. To date, the influence of surface wettability on fomite formation remains elusive. Here, we report that superhydrophobicity prevents the attachment of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on surfaces by repelling virus-laden droplets. Compared to bare surfaces, superhydrophobic (SHPB) surfaces exhibit a significant reduction in SARS-CoV-2 attachment of up to 99.99995%. We identify the vital importance of solid-liquid adhesion in dominating viral attachment, where the viral activity (N) is proportional to the cube of solid-liquid adhesion (A), N ∝ A3. Our results predict that a surface would be practically free of SARS-CoV-2 deposition when solid-liquid adhesion is ≤1 mN. Engineering surfaces with superhydrophobicity would open an avenue for developing a general approach to preventing fomite formation against the COVID-19 pandemic and future ones.
journal_name
J Colloid Interface Scijournal_title
Journal of colloid and interface scienceauthors
Zhu P,Wang Y,Chu H,Wang Ldoi
10.1016/j.jcis.2021.05.031keywords:
["COVID-19","Fomite transmission","SARS-CoV-2","Superhydrophobicity","Surface contamination"]subject
Has Abstractpub_date
2021-10-15 00:00:00pages
613-619eissn
0021-9797issn
1095-7103pii
S0021-9797(21)00703-7journal_volume
600pub_type
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