Antimicrobial Copper Cold Spray Coatings and SARS-CoV-2 Surface Inactivation
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MRS Advances © The Author(s), 2020, published on behalf of Materials Research Society by Cambridge University Press. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited. DOI: 10.1557/adv.2020.366
Antimicrobial Copper Cold Spray Coatings and SARS-CoV-2 Surface Inactivation Bryer C. Sousa and Danielle L. Cote, Ph.D. Materials Science and Engineering, Worcester Polytechnic Institute, Worcester, MA Abstract: This article contextualizes how the antimicrobial properties and antipathogenic contact killing/inactivating performance of copper cold spray surfaces and coatings and can be extended to the COVID-19 pandemic as a preventative measure. Specifically, literature is reviewed in terms of how copper cold spray coatings can be applied to hightouch surfaces in biomedical as well as healthcare settings to prevent fomite transmission of SARS-CoV-2 through rapidly inactivating SARS-CoV-2 virions after contaminating a surface. The relevant literature on copper-based antipathogenic coatings and surfaces are then detailed. Particular attention is then given to the unique microstructurally-mediated pathway of copper ion diffusion associated with copper cold spray coatings that enable fomite inactivation. Keywords: Antiviral Materials, Contact Killing/Inactivating Surfaces, Antimicrobial Coatings, Copper, Cold Spray, COVID-19, SARS-CoV-2, Antipathogenic Coatings
INTRODUCTION The objective of this review article is to situate the way in which the antipathogenic properties and antimicrobial contact killing/inactivating performance of copper cold spray coatings and surfaces can be extended to the COVID-19 pandemic as a preventative measure against transmission. Specifically, literature is reviewed from a materials performance and mechanistic perspective on how copper cold spray coatings are successfully able to be utilized as high-touch surfaces in biomedical as well as healthcare settings as an antimicrobial and viricidal material solution for enhanced prevention of fomite transmission of SARS-CoV-2 through rapidly inactivating SARS-CoV-2 virions after infecting a surface. For example, nursing homes, medical facilities, public 1
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transportation, and schools have become high traffic focal points for the spread and transmission of the SARS-CoV-2 virus during the current pandemic. Such settings house a significant volume of high touch surfaces on which the SARS-CoV-2 virus has been shown to be able to remain active and transmissible. By way of refitting the high touch surfaces of the most vulnerable locations and organizations with such antiviral copper cold spray coatings, our
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