Surface properties and biological behaviour of Si-DLC coatings fabricated by a multi-target DC–RF magnetron sputtering method for medical applications

Bociaga, Dorota; Kamińska, M.; Sobczyk-Guzenda, Anna; Jastrzębski, K.; Świątek, L.; Olejnik, Alicja K.

doi:10.1016/j.diamond.2016.01.025

Cited by 49 publications

(29 citation statements)

References 49 publications

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“…However, the presence of silicon above (ca. 16 at.%) positively affected the anti-bacterial properties of the DLC coatings as well, which was also confirmed by Bociaga et al [19]. The chemical composition studies of the tested samples revealed the presence of oxygen atoms in the structure, up to ca.…”

Section: Morphological Analysissupporting

confidence: 80%

“…These properties are related to the presence of a sp 3 C fraction in the structure [17]. However, the stresses can be reduced by incorporating other atoms into the structure (i.e., Si, O, N, F [18][19][20] or metals [21,22]). It is worth mentioning that the reduction in stresses is often associated with a reduction in hardness and elastic modulus of the layers [6,23].…”

Section: Introductionmentioning

confidence: 99%

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Physicochemical and Biological Activity Analysis of Low-Density Polyethylene Substrate Modified by Multi-Layer Coatings Based on DLC Structures, Obtained Using RF CVD Method

et al. 2018

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In this paper, the surface properties and selected mechanical and biological properties of various multi-layer systems based on diamond-like carbon structure deposited on low-density polyethylene (LDPE) substrate were studied. Plasma etching and layers deposition (incl. DLC, N-DLC, Si-DLC) were carried out using the RF CVD (radio frequency chemical vapor deposition) method. In particular, polyethylene with deposited N-DLC and DLC layers in one process was characterized by a surface hardness ca. seven times (up to ca. 2.3 GPa) higher than the unmodified substrate. Additionally, its surface roughness was determined to be almost two times higher than the respective plasma-untreated polymer. It is noteworthy that plasma-modified LDPE showed no significant cytotoxicity in vitro. Thus, based on the current research results, it is concluded that a multilayer system (based on DLC coatings) obtained using plasma treatment of the LDPE surface can be proposed as a prospective solution for improving mechanical properties while maintaining biocompatibility.

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Section: Morphological Analysissupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Physicochemical and Biological Activity Analysis of Low-Density Polyethylene Substrate Modified by Multi-Layer Coatings Based on DLC Structures, Obtained Using RF CVD Method

et al. 2018

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“…In the twenty-first century, most research pertains to the technology of DLC coatings, including the modification of these other atoms (in medical applications N, Si, Ti, O, F, and Ag) [22][23][24][25][26][27][28][29][30]. For their synthesis, the most common method is chemical vapor deposition.…”

Section: Pa Cvd and Dlc Layersmentioning

confidence: 99%

“…In "Introduction," I already mentioned pioneer studies concerning these layers. Up to now, however, carbon nitride has not been obtained in a crystalline form with stoichiometric or a very similar atomic ratio, and a series of works carried out in this area led to obtaining carbon layers subsidized with nitrogen atoms (N-DLC) [38][39][40], silicon (Si-DLC) [25,30,[41][42][43], or more complex, in terms of chemical composition, SiCN:H structures [44,45].…”

Section: Pa Cvd and Dlc Layersmentioning

confidence: 99%

DLC Layers Created Using CVD Techniques and Their Application

Januś¹

2019

Chemical Vapor Deposition for Nanotechnology

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One way to obtain new materials with different properties is to modify existing ones to improve their inadequate properties. Due to the fact that many useful properties of materials, including resistance to wear and corrosion, coefficient of friction and biocompatibility, depend on the state of the surface, modern methods of surface engineering are particularly useful. They include the deposition of layers with a matching chemical composition and structure. In terms of applications, the most suitable seem to be amorphous or nanocrystalline layers containing carbon, nitrogen, silicon and hydrogen. They combine the advantageous properties of silicon carbide SiC and silicon nitride Si 3 N 4 and thus have a strong resistance to oxidation at high temperatures, high modulus of elasticity, low coefficient of friction and wear resistance. However, the silicon carbonitride compound is not thermodynamically stable under normal conditions and therefore must be obtained as a result of unconventional synthesis. One of these methods is chemical vapor deposition (CVD), including the most widely used plasma-assisted chemical vapor deposition (PACVD) techniques. The materials obtained, thanks to these techniques, have found and are still finding wider and wider application in many branches of industry and medicine.

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“…Previous studies have shown that DLC films doped with silicon (Si-DLC) are significantly improved corrosion properties due to the formation of a passive film on their surfaces [11][12][13][14][15][16]. Moreover, silicondoped DLC films deposited by the sputtering method with the Si concentration varied from 4 to 16 at.% can reduce platelet adhesion on the material surface by modifying the hydrophobicity of the material [17]. Additionally, the corrosion resistance of a pure DLC lm can be increased via silicon and nitrogen doping by increasing the number of sp 3 sites in the lm [18].…”

Section: Introductionmentioning

confidence: 99%

Elements-Added Diamond-Like Carbon Film for Biomedical Applications

Sunthornpan

Watanabe

Moolsradoo

2019

Advances in Materials Science and Engineering

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Elements-added diamond-like carbon films for biomedical applications were investigated. The aim of this work was to study the effects of the elemental contents (silicon and silicon-nitrogen) in a DLC film on its properties for biomedical applications. Pure DLC, Si-DLC, and Si-N-DLC films were prepared from C2H2, C2H2 : TMS, and C2H2 : TMS : N2 gaseous mixtures, deposited on an AISI 316L substrate using the plasma-based ion implantation (PBII) technique. The structure of films was analyzed using Raman spectroscopy. The chemical composition of films was measured using energy dispersive X-ray spectroscopy (EDS). The average surface roughness of films was measured by using a surface roughness tester. The hardness and elastic modulus of films were measured by using a nanoindentation hardness tester. The friction coefficient of films was determined using a ball-on-disk tribometer. The surface contact angle was measured by a contact angle measurement. The corrosion performance of each specimen was measured using potentiodynamic polarization. The biocompatibility property of films was conducted using the MTT assay cytotoxicity test. The results indicate that the Si-N-DLC film shows the best hardness and friction coefficient (34.05 GPa and 0.13, respectively) with a nitrogen content of 0.5 at.%N, while the Si-DLC film with silicon content of 14.2 at.%Si reports the best contact angle and corrosion potential (92.47 and 0.398 V, respectively). The Si-N-DLC film shows the highest cell viability percentage of 81.96%, which is lower than the uncoated AISI 316L; this is a considerable improvement. All specimens do not demonstrate any cytotoxicity with approximate viabilities between 74% and 107%, indicating good biocompatibilities.

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Surface properties and biological behaviour of Si-DLC coatings fabricated by a multi-target DC–RF magnetron sputtering method for medical applications

Cited by 49 publications

References 49 publications

Physicochemical and Biological Activity Analysis of Low-Density Polyethylene Substrate Modified by Multi-Layer Coatings Based on DLC Structures, Obtained Using RF CVD Method

Physicochemical and Biological Activity Analysis of Low-Density Polyethylene Substrate Modified by Multi-Layer Coatings Based on DLC Structures, Obtained Using RF CVD Method

DLC Layers Created Using CVD Techniques and Their Application

Elements-Added Diamond-Like Carbon Film for Biomedical Applications

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