Antibacterial Efficacy of Cold-Sprayed Copper Coatings against Gram-Positive <i>Staphylococcus aureus</i> and Gram-Negative <i>Escherichia coli</i>

Contact surfaces have been identified as one of the main routes for pathogen transmission. The efficacy to kill both viruses and bacteria on touch surfaces is critical to reducing the rampant spread of harmful pathogens. Copper is one such material that has been traditionally used for its antimicrob...

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Autores principales:	Novana Hutasoit, Sanjida Halim Topa, Muhammad Awais Javed, Rizwan Abdul Rahman Rashid, Enzo Palombo, Suresh Palanisamy
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cold spray copper coating antibacterial property <i>E. coli</i> <i>S. aureus</i> Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/aa3a58e226844de081d596dee4631c7b
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spelling	oai:doaj.org-article:aa3a58e226844de081d596dee4631c7b2021-11-25T18:13:12ZAntibacterial Efficacy of Cold-Sprayed Copper Coatings against Gram-Positive <i>Staphylococcus aureus</i> and Gram-Negative <i>Escherichia coli</i>10.3390/ma142267441996-1944https://doaj.org/article/aa3a58e226844de081d596dee4631c7b2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6744https://doaj.org/toc/1996-1944Contact surfaces have been identified as one of the main routes for pathogen transmission. The efficacy to kill both viruses and bacteria on touch surfaces is critical to reducing the rampant spread of harmful pathogens. Copper is one such material that has been traditionally used for its antimicrobial properties. However, most contact/touch surfaces are made up of steel or aluminum due to their structural properties. Therefore, coating high-touch components with copper is one possible solution to improve antibacterial efficacy. In this study, copper was coated on both stainless steel and aluminum substrates using a cold spray process which is a fast and economic coating technique. The coated samples in both as-deposited and heat-treated states were exposed to <i>Escherichia coli</i> and <i>Staphylococcus aureus</i> bacteria, and their efficacy was compared with bulk copper plate. It was found that both bacterial cells responded differently to the different coating properties such as coating thickness, porosity, hardness, surface roughness, oxide content, and galvanic coupling effect. These correlations were elucidated in light of various results obtained from antibacterial and bacterial attachment tests, and materials characterizations of the coatings. It is possible to tailor copper coating characteristics to render them more effective against targeted bacteria.Novana HutasoitSanjida Halim TopaMuhammad Awais JavedRizwan Abdul Rahman RashidEnzo PalomboSuresh PalanisamyMDPI AGarticlecold spraycoppercoatingantibacterial property<i>E. coli</i><i>S. aureus</i>TechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6744, p 6744 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cold spray copper coating antibacterial property <i>E. coli</i> <i>S. aureus</i> Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	cold spray copper coating antibacterial property <i>E. coli</i> <i>S. aureus</i> Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Novana Hutasoit Sanjida Halim Topa Muhammad Awais Javed Rizwan Abdul Rahman Rashid Enzo Palombo Suresh Palanisamy Antibacterial Efficacy of Cold-Sprayed Copper Coatings against Gram-Positive <i>Staphylococcus aureus</i> and Gram-Negative <i>Escherichia coli</i>
description	Contact surfaces have been identified as one of the main routes for pathogen transmission. The efficacy to kill both viruses and bacteria on touch surfaces is critical to reducing the rampant spread of harmful pathogens. Copper is one such material that has been traditionally used for its antimicrobial properties. However, most contact/touch surfaces are made up of steel or aluminum due to their structural properties. Therefore, coating high-touch components with copper is one possible solution to improve antibacterial efficacy. In this study, copper was coated on both stainless steel and aluminum substrates using a cold spray process which is a fast and economic coating technique. The coated samples in both as-deposited and heat-treated states were exposed to <i>Escherichia coli</i> and <i>Staphylococcus aureus</i> bacteria, and their efficacy was compared with bulk copper plate. It was found that both bacterial cells responded differently to the different coating properties such as coating thickness, porosity, hardness, surface roughness, oxide content, and galvanic coupling effect. These correlations were elucidated in light of various results obtained from antibacterial and bacterial attachment tests, and materials characterizations of the coatings. It is possible to tailor copper coating characteristics to render them more effective against targeted bacteria.
format	article
author	Novana Hutasoit Sanjida Halim Topa Muhammad Awais Javed Rizwan Abdul Rahman Rashid Enzo Palombo Suresh Palanisamy
author_facet	Novana Hutasoit Sanjida Halim Topa Muhammad Awais Javed Rizwan Abdul Rahman Rashid Enzo Palombo Suresh Palanisamy
author_sort	Novana Hutasoit
title	Antibacterial Efficacy of Cold-Sprayed Copper Coatings against Gram-Positive <i>Staphylococcus aureus</i> and Gram-Negative <i>Escherichia coli</i>
title_short	Antibacterial Efficacy of Cold-Sprayed Copper Coatings against Gram-Positive <i>Staphylococcus aureus</i> and Gram-Negative <i>Escherichia coli</i>
title_full	Antibacterial Efficacy of Cold-Sprayed Copper Coatings against Gram-Positive <i>Staphylococcus aureus</i> and Gram-Negative <i>Escherichia coli</i>
title_fullStr	Antibacterial Efficacy of Cold-Sprayed Copper Coatings against Gram-Positive <i>Staphylococcus aureus</i> and Gram-Negative <i>Escherichia coli</i>
title_full_unstemmed	Antibacterial Efficacy of Cold-Sprayed Copper Coatings against Gram-Positive <i>Staphylococcus aureus</i> and Gram-Negative <i>Escherichia coli</i>
title_sort	antibacterial efficacy of cold-sprayed copper coatings against gram-positive <i>staphylococcus aureus</i> and gram-negative <i>escherichia coli</i>
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/aa3a58e226844de081d596dee4631c7b
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Antibacterial Efficacy of Cold-Sprayed Copper Coatings against Gram-Positive <i>Staphylococcus aureus</i> and Gram-Negative <i>Escherichia coli</i>

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