Reduction of bacterial adhesion on titanium-doped diamond-like carbon coatings

Zhao, Yingyu; Zhao, Buyun; Su, Xueju; Zhang, Shuai; Wang, Su; Keatch, Robert; Zhao, Qi

doi:10.1080/08927014.2017.1403592

Cited by 21 publications

(18 citation statements)

References 24 publications

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“…While the donor component increased, the acceptor component of Ti-DLC coatings almost had not changed and was approximately zero. Similar results were obtained by Zhao et al [39]. As can be seen the γ AB − value decreased for the surface after DP and PFDP deposition in comparison with pure Ti-DLC.…”

Section: Resultssupporting

confidence: 89%

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Impact of Perfluoro and Alkylphosphonic Self-Assembled Monolayers on Tribological and Antimicrobial Properties of Ti-DLC Coatings

et al. 2019

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The diamond-like carbon (DLC) coatings containing 1.6%, 5.3% and 9.4 at.% of Ti deposited by the radio frequency plasma enhanced chemical vapor deposition (RF PECVD) method on the silicon substrate were modified by n-decylphosphonic acid (DP) and 1H, 1H, 2H and 2H-perfluorodecylphosphonic acid (PFDP). The presence of perfluoro and alkylphosphonic self-assembled monolayers prepared by the liquid phase deposition (LPD) technique was confirmed by Fourier transform infrared spectroscopy (FTIR). It was shown that DP and PFDP monolayers on the surface of titanium incorporated diamond-like carbon (Ti-DLC) coatings had a huge influence on their wettability, friction properties, stability under phosphate- and tris-buffered saline solutions and on antimicrobial activity. It was also found that the dispersive component of surface free energy (SFE) had a significant influence on the value of the friction coefficient and the percentage value of the growth inhibition of bacteria. The dispersive component of SFE caused a reduction in the growth of bacteria and the friction coefficient in mili- and nano-newton load range. Additionally, both self-assembled monolayers prepared on Ti-DLC coatings strongly reduced bacterial activity by up to 95% compared to the control sample.

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Section: Resultssupporting

confidence: 89%

“…A similar behavior was observed by Yan et al [40]. In addition, Zhao et al [39] reported that if the electron donor component is large then the surface is more negatively charged. Therefore in the case of surface modification by DP and PFDP the high value of the donor component generates a negative charge on the surfaces.…”

Section: Resultssupporting

confidence: 82%

Impact of Perfluoro and Alkylphosphonic Self-Assembled Monolayers on Tribological and Antimicrobial Properties of Ti-DLC Coatings

et al. 2019

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“…For larger pore diameters (>11 μm), the influence of the potential was weakened enough to let bacteria enter the pores, enhancing bacterial adhesion . In spite of the chemical nature of the surface, bacterial initial attachment and biofilm formation can be regulated by adopting micrometer-scale ordered patterns with different shapes: square-shaped patterns, conical shapes, porous structure, and periodic diamond-like patterns …”

Section: How Surface Topography Can Affect Bacterial Adhesion and Via...mentioning

confidence: 99%

How Functionalized Surfaces Can Inhibit Bacterial Adhesion and Viability

Ghilini

Pissinis

Miñán

et al. 2019

ACS Biomater. Sci. Eng.

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Device-associated infections (DAI) remain a serious concern in modern healthcare. Bacterial attachment to a surface is the first step in biofilm formation, which is one of the main causes of DAIs. The development of materials capable of preventing or inhibiting bacterial attachment constitutes a promising approach to deal with this problem. The multifactorial nature of biofilm maturation and antibiotic resistance directs the research for multitargeted or combinatorial therapeutic approaches. One attractive strategy is the modification or the engineering of surfaces in order to provide antiadhesive and/or antimicrobial properties. Currently, several different approaches that involve physical and chemical surface modification deliver some possible alternatives to achieve this goal. The engineered surfaces can be coated with molecules capable of inhibiting the bacterial adhesion or with active agents that kill microorganisms. In addition, surfaces can also be modified in order to be stimuli-responsive, responding to a particular trigger and then delivering the consequent antimicrobial outcome. Here, we review the prevailing strategies to modify surfaces in order to create an antimicrobial surface and discuss how different surface functionalization can affect bacterial adhesion and/or viability.

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“… 23 Additionally, Ti coatings on stainless steel samples have been shown to reduce bacterial attachment. 24 …”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Biocompatibility of Ti-doped Diamond-like Carbon Films

et al. 2020

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A series of Ti/Ti-diamond-like carbon (Ti-DLC) films was deposited onto monocrystalline Si substrates by dual-magnetron sputtering. The mechanical properties, chemical composition, and microstructure of the films were investigated by Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), X-ray diffraction (XRD), and nanoindentation. The biocompatibility of the Ti-DLC films was evaluated via cell viability testing. The TiC phase was formed at a Ti content of 4.43 atom %, and the surface roughness gradually increased as the Ti content increased. Ti-DLC films with 17.13 atom % Ti exhibited superior adhesion strength and surface hardness. The optical densities (ODs) of the different Ti-DLC films were similar, indicating that the films exhibit biocompatibility regardless of the Ti content. Overall, doping DLC films with Ti provides a better film for medical applications, as it improves the mechanical properties, as evidenced by the elastic modulus, hardness, adhesion strength, and surface roughness of the coating, and maintains ideal biocompatibility.

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Reduction of bacterial adhesion on titanium-doped diamond-like carbon coatings

Cited by 21 publications

References 24 publications

Impact of Perfluoro and Alkylphosphonic Self-Assembled Monolayers on Tribological and Antimicrobial Properties of Ti-DLC Coatings

Impact of Perfluoro and Alkylphosphonic Self-Assembled Monolayers on Tribological and Antimicrobial Properties of Ti-DLC Coatings

How Functionalized Surfaces Can Inhibit Bacterial Adhesion and Viability

Mechanical Properties and Biocompatibility of Ti-doped Diamond-like Carbon Films

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