Diamond-like carbon films produced from high deposition rates exhibit antibacterial activity

The bactericidal activity of diamond-like carbon (DLC) films produced with high deposition rates was measured against Escherichia coli ATCC 25922 ( E. coli). Also, the DLC structural quality, hardness and total compressive stress were evaluated by using Raman scattering spectroscopy, nanoindentation...

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Bibliographic Details
Published inSynthetic metals Vol. 159; no. 21; pp. 2167 - 2169
Main Authors Marciano, F.R., Bonetti, L.F., Da-Silva, N.S., Corat, E.J., Trava-Airoldi, V.J.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Amsterdam Elsevier B.V 01.11.2009
Elsevier
Subjects
Bactericidal activity
Condensed matter: structure, mechanical and thermal properties
Diamond-like carbon
Exact sciences and technology
High deposition rates
Mechanical and acoustical properties
Physical properties of thin films, nonelectronic
Physics
Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties)
High deposition rates
Diamond-like carbon
Bactericidal activity
Germicides
Raman spectra
Compressive stress
Internal stresses
Nanoindentation
Deposition rate
PECVD
Hardness
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Summary:The bactericidal activity of diamond-like carbon (DLC) films produced with high deposition rates was measured against Escherichia coli ATCC 25922 ( E. coli). Also, the DLC structural quality, hardness and total compressive stress were evaluated by using Raman scattering spectroscopy, nanoindentation and perfilometry. Our results show DLC films produced with good quality, low internal compressive stress and high hardness even with high deposition rates. Antibacterial tests show DLC films kill about 30% of E. coli, which means it is possible to use super-hard DLC films as an antibacterial device produced in a large scale.
ISSN:0379-6779
1879-3290
DOI:10.1016/j.synthmet.2009.07.050