Influence of bias voltage on diamond like carbon (DLC) film deposited on polyethylene terephthalate (PET) film surfaces using PECVD and its blood compatibility

Pandiyaraj, K. Navaneetha; Selvarajan, V.; Heeg, Jan; Junge, Fabian; Lampka, Andreas; Barfels, T.; Wienecke, M.; Rhee, Young Ha; Kim, Hyung Woo

doi:10.1016/j.diamond.2010.03.016

Cited by 29 publications

(19 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, the sp 3 concentration of the present a‐C:H coatings is similar to those presented by Logothetidis et al61 who observed a high absorption of albumin versus fibrinogen. Hemocompatibility of this type of films became worse when sp 3 /sp 2 ratio increased above 1.1 or the I D / I G ratio was higher than 1.6 30, 63. This is in line with our suggestion that a sp 3 /sp 2 ratio around 0.8–0.9 is suitable for cell spreading and to prevent thrombus generation on the a‐C:H surface.…”

Section: Discussionsupporting

confidence: 88%

“…In similar materials like DLC coatings, water contact angles around 60–70° resulted in the reduction of the plasma proteins adsorption. Thus, an interfacial tension between the coating and albumin lower than between the coating and blood or fibrinogen reduces the degradation of protein structure and the activation of blood coagulation mechanism 30…”

Section: Discussionmentioning

confidence: 98%

“…It is usually accepted that the main parameters affecting the hemocompatibility of a coating is the wettability of the surface, modulated by the surface chemical composition and roughness. Indeed, hydrophilic coatings (very low water contact angle) favor the adsorption of albumin against fibrinogen, which is suitable for the inhibition of thrombus formation 28–30. Particularly, hydrophilic polymeric‐like materials have also shown non‐thrombogenic properties 31.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Bioactivity and hemocompatibility study of amorphous hydrogenated carbon coatings produced by pulsed magnetron discharge

López‐Santos

Colaux

Laloy

et al. 2012

J Biomedical Materials Res

View full text Add to dashboard Cite

Literature contains very few data about the potential biomedical application of amorphous hydrogenated carbon (a-C:H) thin films deposited by reactive pulsed magnetron discharge even so it is one of the most scalable plasma deposition technique. In this article, we show that such a C2H2 pulsed magnetron plasma produces high quality coating with good hemocompatibility and bioactive response: no effect on hemolysis and hemostasis were observed, and proliferation of various cell types such as endothelial, fibroblast, and osteoblast-like cells was not affected when the deposition conditions were varied. Cell growth on a-C:H coatings is proposed to take place by a two-step process: the initial cell contact is affected by the smooth topography of the a-C:H coatings, whereas the polymeric-like structure, together with a moderate hydrophilicity and a high hydrogen content, directs the posterior cell spreading while preserving the hemocompatible behavior.

show abstract

Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bioactivity and hemocompatibility study of amorphous hydrogenated carbon coatings produced by pulsed magnetron discharge

López‐Santos

Colaux

Laloy

et al. 2012

J Biomedical Materials Res

View full text Add to dashboard Cite

show abstract

“…Process parameters such as power supply voltage and total working pressure control the final hardness of the a-C:H due to the influence of the energy of ion species impinging on substrate surface where the thin film grows [33][34][35][36][37]. Indeed, a higher voltage leads to higher potential difference between anodes and cathodes, thus a higher kinetic energy of ion species is achieved at constant working pressure.…”

Section: Resultsmentioning

confidence: 98%

Hydrogenated amorphous carbon thin films deposition by pulsed DC plasma enhanced by electrostatic confinement

Dufrène

Cemin

Soares

et al. 2014

Surface and Coatings Technology

View full text Add to dashboard Cite

Diamond-like carbon (DLC) is a metastable form of amorphous carbon with attractive properties such as high hardness, low friction, chemical inertness and high wear resistance. In this work, hydrogenated amorphous carbon (a-C:H) thin films were deposited using a plasma enhanced chemical vapor deposition technique by pulsed DC plasma with a simple, low-cost and efficient arrangement of multi-cathodes and multi-anodes in order to enhance the plasma by electrostatic confinement. The samples were characterized by Scanning Electron Microscopy, Energy Dispersive X-ray Spectroscopy, Elastic Recoil Detection Analysis, Raman Spectroscopy, and nanoindentation measurements. a-C:H thin films show an homogeneous hydrogen profile along the films deposited at −600 V and −800 V and variable working pressure. According to Raman spectra, both the I D /I G ratio and the G-peak position increase at higher voltages (more remarkable dependence) and lower working pressures (less remarkable dependence). Moreover, the hardness depends on working conditions such as power supply voltage and total working pressure. The electrostatic confinement enhances the deposition rates of a-C:H thin films up to values of 0.9 μm·h −1 , which is almost double than those previously published by pulsed DC plasma in similar conditions. The Raman spectra follow the stage 2 of an established model and this structure transition may explain the hardness behavior.

show abstract

“…Therefore, it is necessary to investigate the correlation between sp 2 content and anti‐reflective property of DLC film, which can be deposited at a low temperature and a high deposition rate over large areas via a variety of plasma‐enhanced chemical vapor deposition (PECVD) methods . In the present work, the direct current (DC) PECVD was employed, and the interrelation between sp 2 content and anti‐reflective property was studied …”

Section: Introductionmentioning

confidence: 99%

Study on the anti‐reflection and structure evolution of hydrogenated amorphous carbon grown by plasma chemical vapor deposition

Shi

Geng

Zhang

et al. 2014

Surface & Interface Analysis

View full text Add to dashboard Cite

In this work, the interrelation between the anti‐reflective property and the component, especially the sp2 content, was studied. The results showed that the refraction index n increased from 2.2 to 3.3 with the direct current negative bias increasing. The reflection result R successful fall by 11.9% because of the existence of hydrogenated amorphous carbon anti‐reflective coatings. Both the refraction index and reflectivity decreasing correspond to a more graphitic microstructure character. Moreover, the optical property evolution of the films was explained by the chemical vapor deposition mechanism based on the ion sub‐plantation model and two‐phase model. Copyright © 2014 John Wiley & Sons, Ltd.

show abstract

Influence of bias voltage on diamond like carbon (DLC) film deposited on polyethylene terephthalate (PET) film surfaces using PECVD and its blood compatibility

Cited by 29 publications

References 28 publications

Bioactivity and hemocompatibility study of amorphous hydrogenated carbon coatings produced by pulsed magnetron discharge

Bioactivity and hemocompatibility study of amorphous hydrogenated carbon coatings produced by pulsed magnetron discharge

Hydrogenated amorphous carbon thin films deposition by pulsed DC plasma enhanced by electrostatic confinement

Study on the anti‐reflection and structure evolution of hydrogenated amorphous carbon grown by plasma chemical vapor deposition

Contact Info

Product

Resources

About