New insights on contact angle/roughness dependence on high surface energy materials

Giljean, Sylvain; Bigerelle, Maxence; Anselme, Karine; Haïdara, Hamidou

doi:10.1016/j.apsusc.2011.06.088

Cited by 107 publications

(67 citation statements)

References 62 publications

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“…To confirm the effect of roughness further, we measured the CA values of the CuO films, which increased from 47.3° (parent glass) to 67.4° (0.4 mol % CuO thin film) with increasing Cu concentration. Giljean et al [9] have described the relationship between R a and CA and confirmed that CA increases when the surface becomes rough due to low surface energy. The antimicrobial effects of Cu ions were related to their combination with active oxygen.…”

Section: Discussionmentioning

confidence: 89%

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Concentration- and roughness-dependent antibacterial and antifungal activities of CuO thin films and their Cu ion cytotoxicity and elution behavior

Shim

Kim

Eom

et al. 2015

Journal of Industrial Microbiology and Biotechnology

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In this study, we aimed to evaluate the antibacterial and antifungal properties, cytotoxicity, and elution behavior of copper oxide (CuO) thin films with varying concentrations and roughness values. CuO films greater than 0.2 mol % showed 99.9 % antimicrobial activity against Escherichia coli, Staphylococcus aureus, Campylobacter jejuni, and Penicillium funiculosum. Cu ions were found to be noncytotoxic in New Zealand white rabbits. The concentration of Cu ions from CuO thin films eluted in drinking water in 24 h at 100 °C was 0.014 μg L(-1), which was below the standard acceptable level of 0.02 μg L(-1). The transmittance of CuO thin film-coated glass was similar to that of parent glass. The antimicrobial activity, cytotoxicity, elution behavior, and transmittance of CuO deposited on glass suggest that these films could be useful in household devices and display devices.

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Section: Discussionmentioning

confidence: 89%

“…Figure 4 shows the CAs of the parent glass and CuO thin film surfaces at various Cu concentrations. CA measurements are also a useful method for confirming R a values [5,9]. The parent glass had a CA value of 47.3°, as shown in Fig.…”

Section: Resultsmentioning

confidence: 94%

Concentration- and roughness-dependent antibacterial and antifungal activities of CuO thin films and their Cu ion cytotoxicity and elution behavior

Shim

Kim

Eom

et al. 2015

Journal of Industrial Microbiology and Biotechnology

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“…Recently, novel powerful approaches for the realization of biomimetic interfaces have been developed that combine the effectiveness of functional surface topographies with the possibility of functionalizing large areas, making them more suitable for up-scaling to production enivonments. These techniques cover anodization [17], polymer film roughening [18,19], electroerosion [20], and sol-gel processes [21,22]. In particular, laser machining has emerged as a novel and promising approach for the high-speed modification of interfacial properties; in fact, this technique, especially with ultrashort laser pulses, can facilitate the realization of surface textures on a multidimensional scale, similar to those found in natural biological systems, in only a one-step process [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Design and characterization of textured surfaces for applications in the food industry

Lazzini¹,

Romoli²,

Blunt³

et al. 2017

Surf. Topogr.: Metrol. Prop.

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Description of two-process surface topography W Grabon and P Pawlus -A study of variations of areal parameters on machined surfaces P Pawlus, W Grabo, R Reizer et al. AbstractThe aim of this work is to design, manufacture and characterize surface morphologies on AISI 316L stainless steel produced by a custom designed laser-texturing strategy. Surface textures were characterized at a micrometric dimension in terms of areal parameters compliant with ISO 25178, and correlations between these parameters and processing parameters (e.g. laser energy dose supplied to the material, repetition rate of the laser pulses and scanning velocity) were investigated. Preliminary efforts were devoted to the research of special requirements for surface morphology that, according to the commonly accepted research on the influence of surface roughness on cellular adhesion on surfaces, should discourage the formation of biofilms. The topographical characterization of the surfaces was performed with a coherence scanning interferometer. This approach showed that increasing doses of energy to the surfaces increased the global level of roughness as well as the surface complexity. Moreover, the behavior of the parameters S pk , S vk also indicates that, due to the ablation process, an increase in the energy dose causes an average increase in the height of the highest peaks and in the depth of the deepest dales. The study of the density of peaks S pd showed that none of the surfaces analyzed here seem to perfectly match the conditions dictated by the theories on cellular adhesion to confer anti-biofouling properties. However, this result seems to be mainly due to the limits of the resolving power of coherence scanning interferometry, which does not allow the resolution of submicrometric features which could be crucial in the prevention of cellular attachment.

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“…By plotting the experimental data of θ a , θ r against ∆θ and linear extrapolation using Equations (10) and (11) to ∆θ = 0 (≡ corresponds to the y axis intercept), this "hysteresis-free" contact angle value is considered as thermodynamic equilibrium contact angle. In a more theoretical approach, Kamusewitz and Possart [48] derived a relationship between CAH and Wenzel's contact angle by introducing the Wenzel equation into the Young equation, leading to Equation (12), cosθ W = 0.5 × (cosθ a + cosθ r ) (12) By determine the roughness factor by, e.g., scanning force microscopy, the equilibrium contact angle can then be calculated by using the Wenzel Equations (1)- (7).…”

Section: Introduction and Brief Summary Of Basic Wetting Theoriesmentioning

confidence: 99%

“…Nowadays, drop shape analysis by contact angle determination of sessile drops is the preferred method to characterize solid surfaces in terms of wetting behavior [1][2][3][4], adhesion [5][6][7], surface topography and composition [8][9][10], superhydrophobicity [11][12][13], superolephobicity [14,15], wetting transitions [16,17], etc. Therefore, excellent summaries dealing with theoretical and practical aspects of contact angle determination and interpretation can be found in literature [18][19][20][21][22][23][24].…”

Section: Introduction and Brief Summary Of Basic Wetting Theoriesmentioning

confidence: 99%

Statistical Contact Angle Analyses with the High-Precision Drop Shape Analysis (HPDSA) Approach: Basic Principles and Applications

Heib

Schmitt

2016

Coatings

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Abstract:Surface science, which includes the preparation, development and analysis of surfaces and coatings, is essential in both fundamental and applied as well as in engineering and industrial research. Contact angle measurements using sessile drop techniques are commonly used to characterize coated surfaces or surface modifications. Well-defined surfaces structures at both nanoscopic and microscopic level can be achieved but the reliable characterization by means of contact angle measurements and their interpretation often remains an open question. Thus, we focused our research effort on one main problem of surface science community, which is the determination of correct and valid definitions and measurements of contact angles. In this regard, we developed the high-precision drop shape analysis (HPDSA), which involves a complex transformation of images from sessile drop experiments to Cartesian coordinates and opens up the possibility of a physically meaningful contact angle calculation. To fulfill the dire need for a reproducible contact angle determination/definition, we developed three easily adaptable statistical analyses procedures. In the following, the basic principles of HPDSA will be explained and applications of HPDSA will be illustrated. Thereby, the unique potential of this analysis approach will be illustrated by means of selected examples.

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New insights on contact angle/roughness dependence on high surface energy materials

Cited by 107 publications

References 62 publications

Concentration- and roughness-dependent antibacterial and antifungal activities of CuO thin films and their Cu ion cytotoxicity and elution behavior

Concentration- and roughness-dependent antibacterial and antifungal activities of CuO thin films and their Cu ion cytotoxicity and elution behavior

Design and characterization of textured surfaces for applications in the food industry

Statistical Contact Angle Analyses with the High-Precision Drop Shape Analysis (HPDSA) Approach: Basic Principles and Applications

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