Development of a CrN/Cu nanocomposite coating on titanium-modified stainless steel for antibacterial activity against Pseudomonas aeruginosa

A relatively simple method was developed to fabricate CrN/Cu nanocomposite coatings using pulsed DC magnetron sputtering for application in antibacterial activity. These nanocomposite coatings were applied on titanium (Ti)-modified stainless steel substrata (D-9 alloy) and the antibacterial activity...

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Bibliographic Details
Published in:Biofouling (Chur, Switzerland) Switzerland), 2012-09, Vol.28 (8), p.779-787
Main Authors: Elangovan, T., George, Rani P., Kuppusami, P., Mangalaraj, D., Bera, Santanu, Mohandas, E., Kim, Dae-Eun
Format: Article
Language:English
Subjects:
Antibacterial activity
Bacterial Adhesion
Biofilms
Biofouling - prevention & control
Cells, Cultured
Chromium Compounds - administration & dosage
coating(s)
Coatings
Copper
Copper - administration & dosage
Electron microscopy
Magnetron sputtering
Mineral nutrients
nanocomposite
Nanocomposites
Nanocomposites - chemistry
Nitrogen Compounds - administration & dosage
Photoelectron Spectroscopy
Pseudomonas aeruginosa
Pseudomonas aeruginosa - drug effects
Scanning electron microscopy
sputtering
Stainless Steel
Stainless steels
Substrata
surface analysis
Titanium
X-Ray Diffraction
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Summary:A relatively simple method was developed to fabricate CrN/Cu nanocomposite coatings using pulsed DC magnetron sputtering for application in antibacterial activity. These nanocomposite coatings were applied on titanium (Ti)-modified stainless steel substrata (D-9 alloy) and the antibacterial activity of these coating with respect to the Gram-negative bacterium Pseudomonas aeruginosa was investigated qualitatively and quantitatively. Scanning electron microscopy, epifluorescence microscope analyses, and total viable counts confirmed that inclusion of copper in the CrN/Cu nanocomposite coatings provided antibacterial activity against P. aeruginosa. The quantitative examination of the bacterial activity of P. aeruginosa was estimated by the survival ratio as calculated from the number of viable cells which formed colonies on nutrient agar plates.
ISSN:0892-7014
1029-2454
DOI:10.1080/08927014.2012.710605