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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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Arenal, Raúl
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (35/35 displayed)
- 2024Synthesis and dynamics of PtSi nanoparticles on a carbon nanofilm by in-situ TEM Joule heating
- 2023In depth investigations of graphene oxide reduction via in-situ TEM measurementscitations
- 2023Nanostructured CeO2 as support of Ni-catalysts for plasma-catalytic CO2 methanation: Tailoring support’s nanomorphology towards improved performancecitations
- 2023Tungsten oxide mediated quasi-van der Waals epitaxy of WS2on sapphirecitations
- 2022Methylammonium lead bromide perovskite nano-crystals grown in a poly[styrene-co-(2-(dimethylamino)ethyl methacrylate)] matrix immobilized on exfoliated graphene nano-sheetscitations
- 2022In depth investigations of graphene oxide reduction via in-situ TEM measurements
- 2022Explosive percolation yields highly-conductive polymer nanocompositescitations
- 2022Onion-like Fe3O4/MgO/CoFe2O4 magnetic nanoparticles: new ways to control magnetic coupling between soft and hard magnetic phasescitations
- 2021Optoelectronic properties of atomically thin MoxW(1−x)S2 nanoflakes probed by spatially-resolved monochromated EELScitations
- 2021A detailed investigation of the onion structure of exchanged coupled magnetic Fe3-δO4@CoFe2O4@Fe3-δO4 nanoparticlescitations
- 2020Production and processing of graphene and related materialscitations
- 2019Investigating the possible origin of Raman bands in defective sp2/sp3 carbons below 900 cm−1: Phonon density of states or double resonance mechanism at play?citations
- 2019The growth and improved magnetoelectric response of strain-modified Aurivillius SrBi4.25La0.75Ti4FeO18 thin filmscitations
- 2018Multiband light emission and nanoscale chemical analyses of carbonized fumed silicacitations
- 2018Plasmonic properties of an Ag@Ag2Mo2O7 hybrid nanostructure easily designed by solid-state photodeposition from very thin Ag2Mo2O7 nanowirescitations
- 2018Development and properties of high thermal conductivity molybdenum carbide - graphite compositescitations
- 2018Percolating metallic structures templated on laser-deposited carbon nanofoams derived from graphene oxide: applications in humidity sensingcitations
- 2017Advanced spectroscopic analyses on a:C-H materials: Revisiting the EELS characterization and its coupling with multi-wavelength Raman spectroscopycitations
- 2017On the advantages of spring magnets compared to pure FePt: Strategy for rare-earth free permanent magnets following a bottom-up approachcitations
- 2017TEMPO-oxidized cellulose nanofibers as interfacial strengthener in continuous-fiber reinforced polymer compositescitations
- 2017In-situ preparation of ultra-small Pt nanoparticles within rod-shaped mesoporous silica particles: 3-D tomography and catalytic oxidation of n-hexanecitations
- 2017Systematic study of oxygen vacancy tunable transport properties of few-layer MoO3−x enabled by vapor-based synthesiscitations
- 2016High dielectric constant and capacitance in ultrasmall (2.5 nm) SrHfO3 perovskite nanoparticles produced in a low temperature non-aqueous sol-gel routecitations
- 2016Hierarchical nanoplatforms for high-performance enzyme biocatalysis under denaturing conditionscitations
- 2016Radial collapse of carbon nanotubes for conductivity optimized polymer compositescitations
- 2016Dependence of short and intermediate-range order on preparation in experimental and modeled pure a-Sicitations
- 2015Interlayer dependence of G-modes in semiconducting double-walled carbon nanotubescitations
- 2015Fully crystalline faceted Fe-Au core-shell nanoparticlescitations
- 2014Morphological tunability of the plasmonic response: From hollow gold nanoparticles to gold nanoringscitations
- 2014Nitrogen segregation in nanocarbonscitations
- 2014Integration and bioactivity of hydroxyapatite grown on carbon nanotubes and graphene oxidecitations
- 2014In situ formation of carbon nanotubes encapsulated within boron nitride nanotubes via electron irradiationcitations
- 2014Vanadium-doped TiO2 anatase nanostructures: The role of v in solid solution formation and its effect on the optical propertiescitations
- 2012Direct evidence of atomic structure conservation along ultra-long carbon nanotubescitations
- 2011Nitrogen-doped single-walled carbon nanotube thin films exhibiting anomalous sheet resistancescitations
Places of action
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article
Advanced spectroscopic analyses on a:C-H materials: Revisiting the EELS characterization and its coupling with multi-wavelength Raman spectroscopy
Abstract
Hydrogenated amorphous carbon thin films (a:C-H) are very promising materials for numerous applications. The growing of relevance of a:C-H is mainly due to the long-term stability of their outstanding properties. For improving their performances, a full understanding of their local chemistry is highly required. Fifteen years ago, electron energy-loss spectroscopy (EELS), developed in a transmission electron microscope (TEM), was the technique of choice to extract such kind of quantitative information on these materials. Other optical techniques, as Raman spectroscopy, are now clearly favored by the scientific community. However, they still lack of the spatial resolution offered by TEM-EELS. In addition, nowadays, the complexity of the physics phenomena behind EELS is better known. Here, a:C-H thin films have been isothermally annealed and the evolution of their physical and chemical parameters have been monitored at the local and macroscopic scales. In particular, chemical in-depth inhomogeneities and their origins are highlighted. Furthermore, a novel procedure to extract properly and reliably quantitative chemical information from EEL spectra is presented. Finally, the pertinence of empirical models used by the Raman community is discussed. These works demonstrate the pertinence of the combination of local and macroscopic analyses for a proper study of such complex materials. ; The TEM and EELS studies were conducted at the Laboratorio de Microscopias Avanzadas, Instituto de Nanociencia de Aragon, Universidad de Zaragoza, Spain. Some of the research leading to these results has received funding from the European Union Seventh Framework Programme under Grant Agreements 312483- ESTEEM2 (Integrated Infrastructure Initiative – I3) and 604391 Graphene Flagship, as well as from EU H2020 Grant Agreement 696656 Graphene Flagship. R.A. acknowledges funding from the Spanish Ministerio de Economia y Competitividad (FIS2013-46159-C3-3-P), from the Government of Aragon and the European Social Fund under the project ...