| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Mclaughlin, James
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (27/27 displayed)
- 2024Machine Learning-Based Structural Health Monitoring Technique for Crack Detection and Localisation Using Bluetooth Strain Gauge Sensor Networkcitations
- 2018Nanostructured nitrogen doped diamond for the detection of toxic metal ions
- 2018Nanostructured nitrogen doped diamond for the detection of toxic metal ions
- 2017Novel π-conjugated iron oxide/reduced graphene oxide nanocomposites for high performance electrochemical supercapacitorscitations
- 2017Development of an embedded thin-film strain-gauge-based SHM network into 3D-woven composite structure for wind turbine bladescitations
- 2017Functional diamond like carbon (DLC) coatings on polymer for improved gas barrier performancecitations
- 2017Development of an Embedded Thin-film Strain-sensor-based SHM for Composite Tidal Turbine Blades
- 2011Structural and surface energy analysis of nitrogenated ta-C filmscitations
- 2010Effect of thin aluminum interlayer on growth and microstructure of carbon nanotubescitations
- 2010Microstructure and field emission characteristics of ZnO nanoneedles grown by physical vapor depositioncitations
- 2009Electrical and Raman spectroscopic studies of vertically aligned multi-walled carbon nanotubes.citations
- 2009Substrate effects on the microstructure of hydrogenated amorphous carbon filmscitations
- 2009Glycine Adsorption onto DLC and N-DLC Thin Films Studied by XPS and AFMcitations
- 2007Intrinsic mechanical properties of ultra-thin amorphous carbon layerscitations
- 2006Measuring the thickness of ultra-thin diamond-like carbon filmscitations
- 2005Electronic properties of a-CNx thin films : An x-ray-absorption and photoemission spectroscopy studycitations
- 2005Electronic structure and photoluminescence study of silicon doped diamond like carbon (Si:DLC) thin filmscitations
- 2005Structural investigation and gas barrier performance of diamond-like carbon based films on polymer substratescitations
- 2005Spectroscopic analysis of a-C and a-CNx films prepared by ultrafast high repetition rate pulsed laser depositioncitations
- 2004Platelet adhesion on silicon modified hydrogenated amorphous carbon films.citations
- 2004Macrophage responses to vascular stent coatings.
- 2004Electronic structure and bonding properties of Si-doped hydrogenated amorphous carbon filmscitations
- 2001Electrical characteristics of nitrogen incorporated hydrogenated amorphous carboncitations
- 2001Intrinsic stress measured on ultra-thin amorphous carbon films deposited on AFM cantileverscitations
- 2001The insulating properties of a-C:H on silicon and metal substratescitations
- 2000Nitrogen doping of amorphous DLC films by rf plasma dissociated nitrogen atom surface bombardment in a vacuumcitations
- 2000The effects of Si incorporation on the microstructure and nanomechanical properties of DLC thin filmscitations
Places of action
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article
Glycine Adsorption onto DLC and N-DLC Thin Films Studied by XPS and AFM
Abstract
An understanding of protein adsorption to surfaces of materials is required for the control of biocompatibility and bioactivity. Amorphous carbon, commonly known as diamond-like carbon (DLC) is reported to have excellent biocompatibility. Hydrogenated amorphous-carbon thin films (DLC) and nitrogen doped a-C:H thin films (N-DLC) were prepared by plasma-enhanced chemical vapour deposition (PECVD). Glycine adsorption onto the surface of the films was investigated in order to aid in the elucidation of the mechanisms involved in protein adhesion. The physicochemical nature of the surfaces, before and after adsorption of glycine, was analysed using X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM). The XPS spectra highlighted a slight increase the ratio of sp3/sp2 at low levels of N (5.4 atom %) whilst increasing the nitrogen dopant level (> 5.4 atom %) resulted in a decrease of the sp3/sp2 ratio. Following exposure to solutions containing glycine, the presence of peaks at 285.0 eV, 399 eV and 532 eV indicated the adsorption of glycine to the surfaces with a quantitative change in the amount of C, N and O on the surfaces. Glycine was bound to the surface of the DLC films via both de-protonated carboxyl and protonated amino groups while, in the case of N-DLC gylcine was bound to the surface via anionic carboxyl groups and the amino group did not interact strongly with the surface. AFM analysis showed a change in surface roughness of the films with the ratio of rms values increasing following exposure to glycine. These results show that low levels of nitrogen doping in DLC enhances the adsorption of the amino acid, while, increased doping levels (> 5.4 atom %) led to a reduced adsorption, as compared to undoped DLC. Doping of DLC may allow control of protein adsorption to the surface. [DOI: 10.1380/ejssnt.2009.217]