Properties of Zinc-containing Diamond-like Carbon Films Prepared by Plasma Source Ion Implantation

Hatada, Ruriko; Flege, Stefan; Rimmler, Berthold; Ensinger, Wolfgang; Baba, Koumei

doi:10.14723/tmrsj.42.37

Cited by 3 publications

(1 citation statement)

References 23 publications

(28 reference statements)

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“…Zinc is biocompatible [26] and biodegradable [27] and thus suitable to be used in coatings of medical implants. Additionally, when preparing Zn-DLC films by plasma source ion implantation and deposition (PSII) [28], the zinc particles within the surface of the DLC film tend to have a diameter of several ten nm, even with average Zn contents as low as 9.6 at.% [29].…”

Section: Introductionmentioning

confidence: 99%

Surface Structuring of Diamond-Like Carbon Films by Chemical Etching of Zinc Inclusions

et al. 2019

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A diamond-like carbon (DLC) film with a nanostructured surface can be produced in a two-step process. At first, a metal-containing DLC film is deposited. Here, the combination of plasma source ion implantation using a hydrocarbon gas and magnetron sputtering of a zinc target was used. Next, the metal particles within the surface are dissolved by an etchant (HNO3:H2O solution in this case). Since Zn particles in the surface of Zn-DLC films have a diameter of 100–200 nm, the resulting surface structures possess the same dimensions, thus covering a range that is accessible neither by mask deposition techniques nor by etching of other metal-containing DLC films, such as Cu-DLC. The surface morphology of the etched Zn-DLC films depends on the initial metal content of the film. With a low zinc concentration of about 10 at.%, separate holes are produced within the surface. Higher zinc concentrations (40 at.% or above) lead to a surface with an intrinsic roughness.

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Section: Introductionmentioning

confidence: 99%

Surface Structuring of Diamond-Like Carbon Films by Chemical Etching of Zinc Inclusions

et al. 2019

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Dielectric constant, AC conductivity and impedance spectroscopy of zinc-containing diamond-like carbon film UV photodetector

Das

Hatada

Ensinger

et al. 2018

Journal of Alloys and Compounds

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Zn:DLC films via PECVD-HIPIMS: Evaluation of antimicrobial activity and cytotoxicity to mammalian cells

Correia

Sampaio

Milhan

et al. 2023

Journal of Vacuum Science &Amp; Technology A

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DLC films were grown with Zn via a combined plasma-enhanced chemical vapor deposition (PECVD) and high-power impulse magnetron sputtering (HIPIMS) process. The films were deposited on textiles in an atmosphere of Ar and C2H2, and the percentage of metal in the DLC was varied by controlling the acetylene gas flow. At first, to evaluate the antimicrobial activity, a screening test with the ISO 22196 standard was carried out. Afterward, AATCC TM100:2019 was used to evaluate the antimicrobial effectiveness of the films on textiles. The antimicrobial effectiveness of the coating was studied against a Gram-negative bacterium ( Escherichia coli), a Gram-positive bacterium ( Staphylococcus aureus), and a fungus ( Candida albicans), after a 24 h contact. In addition, the cytotoxicity of the samples to mammalian cells was evaluated by indirect contact. For this, the samples were soaked into the growth media for 1 and 7 days, and then, the extracts were collected and put in contact with keratinocytes for 24 h. Finally, the properties of the films were also evaluated as a function of the Zn content, such as their structural quality, morphology, hardness, wear resistance, and coefficient of friction. The films showed excellent results against all microorganisms, with 100% effectiveness in some cases. The pure extracts obtained from all the samples with the incorporation of metals were cytotoxic. Despite that, the cell viability after contact with some Zn-DLC diluted extracts (10%) was not different from that observed in the uncoated group. Besides, increasing the Zn content resulted in a film with poorer mechanical properties but did not affect the coefficient of friction of the coating.

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Properties of Zinc-containing Diamond-like Carbon Films Prepared by Plasma Source Ion Implantation

Cited by 3 publications

References 23 publications

Surface Structuring of Diamond-Like Carbon Films by Chemical Etching of Zinc Inclusions

Surface Structuring of Diamond-Like Carbon Films by Chemical Etching of Zinc Inclusions

Dielectric constant, AC conductivity and impedance spectroscopy of zinc-containing diamond-like carbon film UV photodetector

Zn:DLC films via PECVD-HIPIMS: Evaluation of antimicrobial activity and cytotoxicity to mammalian cells

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