Data di Pubblicazione:
2017
Citazione:
Bactericidal performance of nanostructured surfaces by fluorocarbon plasma / E. Vassallo, M. Pedroni, T. Silvetti, S. Morandi, S. Toffolatti, G. Angella, M. Brasca. - In: MATERIALS SCIENCE AND ENGINEERING. C, BIOMIMETIC MATERIALS, SENSORS AND SYSTEMS. - ISSN 0928-4931. - 80(2017), pp. 117-121. [10.1016/j.msec.2017.05.111]
Abstract:
This study presents the characterization and antibacterial activity of nanostructured Si by plasma treatment method using a tetrafluoromethane (CF4) and hydrogen (H2) mixture. Nanostructured-Si is a synthetic nanomaterial that contains high aspect ratio nanoprotrusions on its surface, produced through a reactive-ion etching process. We have shown that the nanoprotrusions on the surfaces produce a mechanical bactericidal effect. Nanostructured-Si exhibited notable activity against three different microorganisms: Gram-negative (Escherichia coli), Gram-positive (Staphylococcus aureus) and spore-forming bacteria (Bacillus cereus) producing a > 5 log10 reduction after 24 h of incubation. Scanning electron microscopy was used to analysis the structure and morphology character of different surfaces evidencing the physical bactericidal activity of the Nanostructured-Si. These results provide excellent prospects for the development of a new generation of antibacterial surfaces.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Antibiofouling; Bacillus cereus; Bactericidal; Escherichia coli; Nanopattern; Staphylococcus aureus; Materials Science (all); Condensed Matter Physics; Mechanics of Materials; Mechanical Engineering
Elenco autori:
E. Vassallo, M. Pedroni, T. Silvetti, S. Morandi, S. Toffolatti, G. Angella, M. Brasca
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