| 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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Jones, Bj
Abertay University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (31/31 displayed)
- 2024Developing fingermarks on circulated scottish banknotes
- 2022Degradation of polymer banknotes through handling, and effect on fingermark visualisationcitations
- 2020The optimisation of fingermark enhancement by VMD and Lumicyano™ on thermal papercitations
- 2016Sticking non-stickcitations
- 2014The effect of substrate geometry and surface orientation on the film structure of DLC deposited using PECVDcitations
- 2014Determining the chronology of deposition of natural fingermarks and inks on paper using secondary ion mass spectrometrycitations
- 2014Determining the chronology of deposition of natural fingermarks and inks on paper using secondary ion mass spectrometrycitations
- 2013The effects of polymer pigmentation on fingermark development techniquescitations
- 2012Substrate and material transfer effects on the surface chemistry and texture of diamond-like carbon deposited by plasma-enhanced chemical vapour depositioncitations
- 2011Argon plasma treatment techniques on steel and effects on diamond-like carbon structure and delaminationcitations
- 2010University challengecitations
- 2010Diamond-like carbon coating of alternative metal alloys for medical and surgical applicationscitations
- 2010Nano-scale composition of commercial white powders for development of latent fingerprints on adhesivescitations
- 2009Diamond-like carbon / epoxy low-friction coatings to replace electroplated chromiumcitations
- 2009Diamond-like carbon/epoxy low-friction coatings to replace electroplated chromiumcitations
- 2009Structure and tribological performance of diamond-like carbon based coatings for aerospace component processingcitations
- 2009Electronic properties of SnO2-based ceramics with double function of varistor and humidity sensor
- 2008In diamond health
- 2008Nano-scale analysis of titanium dioxide fingerprint-development powderscitations
- 2008Energy efficiency improvements in dry drilling with optimised diamond-like carbon coatingscitations
- 2008Sparkling touchdown
- 2008Effect of sintering temperature and heat treatment on electrical properties of indium oxide based ceramics
- 2007Energy Efficiency Improvements in Dry Drilling with Optimised Diamond-Like Carbon Coatingcitations
- 2005Electron paramagnetic resonance evaluation of defects at the (100)Si/Al2O3 interfacecitations
- 2005Analysis of defects at the interface between high-k thin films and (1 0 0) siliconcitations
- 2003An EPR study at X- and W-band of defects in a-Ccitations
- 2003An EPR study at X- and W-band of defects in a-C:H films in the temperature range 5-300K
- 2002Electronic properties of amorphous carbon nitride a-C1-xNxcitations
- 2001Electron delocalization in amorphous carbon by ion implantation
- 2001Electron paramagnetic resonance study of ion implantation induced defects in amorphous hydrogenated carbon
- 2001Electron paramagnetic resonance study of ion implantation induced defects in amorphous hydrogenated carboncitations
Places of action
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article
The effect of substrate geometry and surface orientation on the film structure of DLC deposited using PECVD
Abstract
Potential applications of diamond-like carbon ({DLC}) coatings range from precision tools and biomedical implants to micro mechanical devices and engine components. Where uniform coatings are required on substrates with complex geometries, plasma enhanced chemical vapour deposition ({PECVD}) is often a preferred deposition method. As a non-line of sight process, the geometry of the substrate is often considered negligible. For this reason analysis of {PECVD} coatings, such as amorphous carbon, has mostly been concerned with reactor deposition variables, such as bias voltage, pressure and gas ratios. Samples are therefore usually prepared and positioned to minimise the influence of other variables. By depositing nominally similar {DLC} films on silicon samples positioned horizontally and vertically on the reactor cathode plate it was possible to examine the variations in the coating characteristics and mechanical properties that occur due to the geometry of the substrate being coated. Topographic measurements and analysis of bonding structures revealed significant heterogeneity in the coatings. Electron microscopy showed variation in surface structure as well as thickness disparities of up to 50\% in the vertical sample. Atomic force microscopy showed roughness, Ra, varied from 0.37nm to 15.4nm between samples. Raman spectroscopy highlighted variations in the sp2/sp3 bonding ratios whilst micro wear tests demonstrated how these variations reduce the critical load performance. These effects are explained in terms of the deposition mechanisms involved and are related to variation in deposition species and geometrical field enhancements within the deposition chamber. Improved understanding of these local variations will aid in the optimisation of coatings for complex substrate geometries. ?? 2014.