2023
DOI: 10.1021/acsami.3c01400
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Durability and Surface Oxidation States of Antiviral Nano-Columnar Copper Thin Films

Abstract: Antiviral coatings that inactivate a broad spectrum of viruses are important in combating the evolution and emergence of viruses. In this study, nano-columnar Cu thin films have been proposed, inspired by cicada wings (which exhibit mechano-bactericidal activity). Nano-columnar thin films of Cu and its oxides were fabricated by the sputtering method, and their antiviral activities were evaluated against envelope-type bacteriophage Φ6 and non-envelope-type bacteriophage Qβ. Among all of the fabricated films, Cu… Show more

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Cited by 8 publications
(6 citation statements)
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“…Fast, easy methods for applying long-lasting coatings have been reported, including simply coating from organic solvents and in situ copolymerization with self-assembling biocides . Antiviral materials have been less researched than antimicrobial ones but are not less important; moreover, designing materials specifically for viruses is essential because viruses strongly differ from bacteria in size, structure, and growth mechanism. The COVID-19 pandemic has further highlighted the importance of antiviral materials and inspired extensive research in this field, ,,, as exemplified by our previous works on surfactant-loaded mesoporous silica and nanopillar copper films. , However, surfaces with long-lasting antiviral effects remain challenging to realize.…”
Section: Introductionmentioning
confidence: 99%
“…Fast, easy methods for applying long-lasting coatings have been reported, including simply coating from organic solvents and in situ copolymerization with self-assembling biocides . Antiviral materials have been less researched than antimicrobial ones but are not less important; moreover, designing materials specifically for viruses is essential because viruses strongly differ from bacteria in size, structure, and growth mechanism. The COVID-19 pandemic has further highlighted the importance of antiviral materials and inspired extensive research in this field, ,,, as exemplified by our previous works on surfactant-loaded mesoporous silica and nanopillar copper films. , However, surfaces with long-lasting antiviral effects remain challenging to realize.…”
Section: Introductionmentioning
confidence: 99%
“…The antibacterial and antiviral activity of nanostructured copper and its compounds is significantly greater than that of bulk copper and its compounds. This is because surface-exposed copper ions on nanostructure surfaces exhibit much higher activity than those on bulk ones [ [5] , [6] , [7] , [8] , [9] , [10] , [11] , [12] ].…”
Section: Introductionmentioning
confidence: 99%
“…Infectious diseases caused by bacteria and viruses can spread rapidly across the globe, becoming a serious threat to human health and safety. , Vaccines and antiviral drugs have been effective methods for combating epidemic viral diseases. However, developing new antiviral vaccines or drugs requires long cycles, and the continuous mutation of viruses may lead to vaccine failure. , Since respiratory virus transmission is mainly through contact with respiratory droplets, the World Health Organization recommends wearing masks to protect individuals from infection. , However, most current masks or protective clothing only provide passive protection through a physical barrier and have no virucidal capacity. The arbitrary removal of used masks in a nonmedical setting increases the cross-infection risk and the reproliferation of viruses. Therefore, the development of air filter materials for masks with virus-inactivation capabilities is essential.…”
Section: Introductionmentioning
confidence: 99%