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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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Sajdl, Petr
University of Chemistry and Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024Measurement system for in-situ estimation of instantaneous corrosion rate in supercritical watercitations
- 2023Beyond the Platinum Era─Scalable Preparation and Electrochemical Activation of TaS2 Flakescitations
- 2023Exploring morphological diversity of Q-carbon structures through laser energy density variationcitations
- 2022KrF Laser and Plasma Exposure of PDMS–Carbon Composite and Its Antibacterial Propertiescitations
- 2022Carbon Transformation Induced by High Energy Excimer Treatmentcitations
- 2022Surface modifications of a silicalite film designed for coating orthopaedic implantscitations
- 2022Plasma treatment of PTFE at elevated temperature: The effect of surface properties on its biological performancecitations
- 2021The effect of material and process parameters on the surface energy of polycaprolactone fibre layerscitations
- 2020Studium oxidových vrstev na slitinách zirkonia Ramanovou spektroskopií
- 2020Zr alloy protection against high-temperature oxidation: Coating by a double-layered structure with active and passive functional propertiescitations
- 2020Raman study of oxide layers on zirconium alloys using 18O tracerscitations
- 2020Cellulose acetate honeycomb-like pattern created by improved phase separationcitations
- 2017Nanocrystalline diamond protects Zr cladding surface against oxygen and hydrogen uptake : Nuclear fuel durability enhancementcitations
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article
Exploring morphological diversity of Q-carbon structures through laser energy density variation
Abstract
This article presents a study on preparing and characterising Q-carbon structures through ultrafast cooling of annealed amorphous carbon using a nanosecond KrF excimer laser. The experiments were conducted under high vacuum conditions. Different Q-carbon structures resembling fibers, clusters, microdots, and combinations of clusters with nanodots were successfully prepared by varying the beam energy density (ranging from 0.6 to 1.8 J cm−2) during the pulsed laser annealing process. The resulting changes in surface morphology were analysed using atomic force microscopy (AFM) and scanning electron microscopy (SEM). Additionally, the modified forms of carbon were investigated through energy-dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. The findings reveal that increasing the beam energy density during the pulsed laser annealing process led to a corresponding increase in the percentage of sp3 hybridisation in the samples. The highest sp3 content, reaching 83 %, was observed in the sample with the highest energy value of 1.8 J cm−2, where the fastest undercooling occurred. In addition, we evaluated the antibacterial potential of the prepared sample (1.0 J) using two bacterial strains, one gram-positive of S. aureus and one gram-negative of E. coli. © 2023 Elsevier B.V.