Mechanical properties and antibacterial activity of copper doped diamond-like carbon films

Chan, Yu Hao; Huang, Chung Fang; Ou, Keng Liang; Peng, Pai

doi:10.1016/j.surfcoat.2011.07.034

Cited by 102 publications

(59 citation statements)

References 29 publications

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“…In contrast, the stainless steel surface did not show antibacterial properties. In the present study, similarly to Sharifahmadian et al (2013) and other previous studies (Chan et al, 2011;Wilks et al, 2005;Xu et al, 2012;Zhang et al, 2011), E. coli was rapidly killed on copper regardless of the hydrodynamic condition and nutrient load. Thus, despite the higher number of adhered cells on this surface, it may be suitable as a surface material for industry since it can reduce the contamination risk.…”

Section: Resultssupporting

confidence: 89%

The impact of material properties, nutrient load and shear stress on biofouling in food industries

Moreira

Gomes

Simões

et al. 2015

Food and Bioproducts Processing

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Abstract:In the food industry, biofilm formation in pipes, equipment and cooling systems increases maintenance costs, decreases operational efficiencies and is a source of contamination.Shear stress, nutrient load and surface material are important variables affecting the biofilm onset in industry. In this work, the combined impacts of these variables were assessed using three different materials (glass, copper and stainless steel), two nutrient loads (high and low nutrient medium) and two hydrodynamic conditions (static and dynamic). Initial adhesion and biofilm formation were studied in microplates usingEscherichia coli as a model organism.Surface material was the factor with the strongest impact and adhesion/biofilm formation were correlated with surface hydrophobicity. However, the impact of this variable was dependent on the nutrient load and imposed shear stress. It was also found that, for the majority of the situations tested, initial attachment performance is a good predictor of biofilm formation behaviour and that the effects observed during attachment are amplified during biofilm maturation. Since shear stress is a major determinant in cell adhesion, the results of this study may find application in industrial systems operating at flow rates between 0.001 and 600 m 3 h -1 depending on tube material and diameter.

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Section: Resultssupporting

confidence: 89%

The impact of material properties, nutrient load and shear stress on biofouling in food industries

Moreira

Gomes

Simões

et al. 2015

Food and Bioproducts Processing

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show abstract

“…4). Friction coefficient (COF) was obtained as an average value from measurement, but tribotrack volume (W v , mm 3 ) and wear rate (W r , mm 3 /N·m) were calculated from tribotrack cross-sectional area (A, µm 2 ) measurement (see Fig. 5).…”

Section: Experimental Partmentioning

confidence: 99%

Tribological Properties of PVD Carbon-Copper Composite Films Reinforced by Titanium

Lungevičs

Leitāns

Rudzītis

et al. 2016

Latvian Journal of Physics and Technical Sciences

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Carbon-copper composite coatings reinforced with titanium were deposited using high power magnetron sputtering technique. Tribological and metrological tests were performed using Taylor Hobson Talysurf Intra 50 measuring equipment and CSM Instruments ball-on-disk type tribometer. Friction coefficient and wear rate were determined at 2N, 4N, 6N loads. It was revealed that friction coefficient decreased at a higher Ti concentration, which was particularly expressed at bigger applied loads. However, wear volume values tended to increase in the beginning, till Ti concentration reached about 11 %, but then decreased, thus providing better nanocoating wear resistance.

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“…4. Wear rate was calculated using the following equation (1): where W v -tribotrack volume, mm 3 ; F -load on ball, N; l -total wear experiment distance, m.…”

Section: Wear Rate Determinationmentioning

confidence: 99%

“…Such coatings have good adhesion and serve as a protective layer. Carbon-copper (a-C/Cu) coatings are in particular interest [2][3][4]. Such coatings have composite structure in which copper and graphite do not constitute carbide directly -copper nanoparticles are built in graphite matrix.…”

Section: Introductionmentioning

confidence: 99%

Tribological Properties of Sputter Deposited Carbon-Copper Composite Films

Leitāns

Bulaha

Lungevičs

2015

Proceedings of the 8th International Scientific Conference "BALTTRIB 2015"

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Carbon-copper composite coatings were deposited using high power magnetron sputtering technique. Tribological tests were performed using ball-on-disk type tribometer. Friction coefficient and wear rate were determined at 40 N load. It was found that an increase in the percentage composition of carbon in C-Cu coating, reduces the coefficient of friction value. But at higher concentrations of C coating it becomes more brittle, that reduces wear resistance.

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Mechanical properties and antibacterial activity of copper doped diamond-like carbon films

Cited by 102 publications

References 29 publications

The impact of material properties, nutrient load and shear stress on biofouling in food industries

The impact of material properties, nutrient load and shear stress on biofouling in food industries

Tribological Properties of PVD Carbon-Copper Composite Films Reinforced by Titanium

Tribological Properties of Sputter Deposited Carbon-Copper Composite Films

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