Antimicrobial Cu-functionalized surfaces prepared by bipolar asymmetric DC-pulsed magnetron sputtering (DCP)

Osorio-Vargas, Paula; Sanjinés, R.; Ruales, C.; Castro, Camilo A.; Pulgarín, C.; Rengifo-Herrera, A.-J.; Lavanchy, J.-C.; Kiwi, J.

doi:10.1016/j.jphotochem.2011.03.022

Cited by 40 publications

(17 citation statements)

References 22 publications

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“…Previous work indicated that Cu-sputtered films exhibited a better bacterial inactivation activity than TiO 2 -or Ag-sputtered films under the same experimental conditions (2,18). Currently, there is no well-established method to assess the bactericidal activity of this type of surface (14,18).…”

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confidence: 99%

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Comparison of Methods for Evaluation of the Bactericidal Activity of Copper-Sputtered Surfaces against Methicillin-Resistant Staphylococcus aureus

Rio

Kusiak-Nejman

Kiwi

et al. 2012

Appl Environ Microbiol

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Bacteria can survive on hospital textiles and surfaces, from which they can be disseminated, representing a source of health careassociated infections (HCAIs). Surfaces containing copper (Cu), which is known for its bactericidal properties, could be an efficient way to lower the burden of potential pathogens. The antimicrobial activity of Cu-sputtered polyester surfaces, obtained by direct-current magnetron sputtering (DCMS), against methicillin-resistant Staphylococcus aureus (MRSA) was tested. The Cupolyester microstructure was characterized by high-resolution transmission electron microscopy to determine the microstructure of the Cu nanoparticles and by profilometry to assess the thickness of the layers. Sputtering at 300 mA for 160 s led to a Cu film thickness of 20 nm (100 Cu layers) containing 0.209% (wt/wt) polyester. The viability of MRSA strain ATCC 43300 on Cusputtered polyester was evaluated by four methods: (i) mechanical detachment, (ii) microcalorimetry, (iii) direct transfer onto plates, and (iv) stereomicroscopy. The low efficacy of mechanical detachment impeded bacterial viability estimations. Microcalorimetry provided only semiquantitative results. Direct transfer onto plates and stereomicroscopy seemed to be the most suitable methods to evaluate the bacterial inactivation potential of Cu-sputtered polyester surfaces, since they presented the least experimental bias. Cu-polyester samples sputtered for 160 s by DCMS were further tested against 10 clinical MRSA isolates and showed a high level of bactericidal activity, with a 4-log 10 reduction in the initial MRSA load (10 6 CFU) within 1 h. Cu-sputtered polyester surfaces might be of use to prevent the transmission of HCAI pathogens.

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confidence: 99%

“…Currently, there is no well-established method to assess the bactericidal activity of this type of surface (14,18).…”

mentioning

confidence: 99%

Comparison of Methods for Evaluation of the Bactericidal Activity of Copper-Sputtered Surfaces against Methicillin-Resistant Staphylococcus aureus

Rio

Kusiak-Nejman

Kiwi

et al. 2012

Appl Environ Microbiol

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“…The magnetron sputtering technology can be used to prepare super-hard films, wearable and corrosion-resistant films, superconducting films, magnetic films, optical films, and other specific films [1]. It has been using the magnetron sputtering to deposit thin films on fabric to obtain functionalities, such as wettability, hydrophilicity, hydrophobicity, antibacterial property, and uvioresistant property [2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of FC Films Coated on PET Substrates by RF Magnetron Sputtering

Huang

2018

MATEC Web Conf.

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Abstract. Fluorocarbon (FC) films were prepared on polyethylene terephthalate (PET) plates and PET fabrics respectively by a radiofrequency (RF) magnetron sputtering technique using polytetrafluoroethylene (PTFE) as a target. Scanning electron microscope and X-ray photoelectron spectroscopy were used to investigate the morphology, structure and composition of the obtained FC films. The hydrophobicity and uvioresistant properties of the FC film coated fabric were studied. The results show that the FC films were successfully deposited on the PET substrates by a RF magnetron sputtering. The deposited films are made up of four components -CF3, -CF2-, CF-and -C-. The proportions of the four components and surface morphologies of the deposited films vary with the sputtering conditions. Compared with the original fabric samples, the hydrophobicity of the FC film coated fabrics is quite good and improved significantly.

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“…Recently, it has been used to prepare dielectric films, lubricate films and the other functional macromolecule films [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Performance of FC Film Deposited on PET Fabric by a Magnetron Sputtering Method

Huang¹,

Lu²,

et al. 2017

Proceedings of the 2017 International Conference on Information Technology and Intelligent Manufacturing (ITIM 2017)

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Antimicrobial Cu-functionalized surfaces prepared by bipolar asymmetric DC-pulsed magnetron sputtering (DCP)

Cited by 40 publications

References 22 publications

Comparison of Methods for Evaluation of the Bactericidal Activity of Copper-Sputtered Surfaces against Methicillin-Resistant Staphylococcus aureus

Comparison of Methods for Evaluation of the Bactericidal Activity of Copper-Sputtered Surfaces against Methicillin-Resistant Staphylococcus aureus

Preparation and Characterization of FC Films Coated on PET Substrates by RF Magnetron Sputtering

Performance of FC Film Deposited on PET Fabric by a Magnetron Sputtering Method

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