A5006920649- Transition Metal Oxide Nanomaterials
- Metal and Thin Film Mechanics
- Catalytic Processes in Materials Science
- ZnO doping and properties
- Magnetic and transport properties of perovskites and related materials
- GaN-based semiconductor devices and materials
- Luminescence Properties of Advanced Materials
- Semiconductor materials and devices
- Perovskite Materials and Applications
- Metallic Glasses and Amorphous Alloys
- Metal-Organic Frameworks: Synthesis and Applications
- Electronic and Structural Properties of Oxides
- Copper-based nanomaterials and applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Electrocatalysts for Energy Conversion
- Laser-Ablation Synthesis of Nanoparticles
- nanoparticles nucleation surface interactions
- X-ray Diffraction in Crystallography
- Laser Material Processing Techniques
- Catalysis and Oxidation Reactions
- Surface Roughness and Optical Measurements
- Gas Sensing Nanomaterials and Sensors
- Multiferroics and related materials
- Semiconductor materials and interfaces
- Advancements in Battery Materials
Centre National de la Recherche Scientifique
2016-2025
Université de Lorraine
2016-2025
Institut Jean Lamour
2015-2024
Jožef Stefan Institute
2023
ITMO University
2021
Laboratoire d'Étude des Microstructures et de Mécanique des Matériaux
2016
Laboratoire de Réactivité et Chimie des Solides
2013-2015
Laboratoire Interdisciplinaire Carnot de Bourgogne
2008-2014
Université de Bourgogne
2008-2014
Université de Picardie Jules Verne
2013-2014
Platinum is the most versatile element in catalysis, but it rare and its high price limits large-scale applications, for example fuel-cell technology. Still, conventional catalysts use only a small fraction of Pt content, that is, those atoms located at catalyst's surface. To maximize noble-metal efficiency, precious metal should be atomically dispersed exclusively within outermost surface layer material. Such species can indeed prepared with exceptionally stability. Using DFT calculations...
A microwave-assisted synthesis of water-dispersible core/shell Cu–In–Zn–Se/ZnS QDs and their potential as absorbers for QDSSCs.
This paper demonstrates the possibility of producing a lamellar ceramic nanocomposite at top-most surface oxide coatings grown with Plasma Electrolytic Oxidation process (PEO). PEO was conducted on aluminium in silicate-rich electrolyte under so-called "soft" regime. Nanoscale characterisation showed that transition from "arcs" to regime concomitant gradual formation 1:1 mullite/alumina (≈120 nm thick) filled cavity "pancake" structure. Combined plasma diagnostic techniques, three-step...
The preparation of high-purity LiFeBO<sub>3</sub> has been reported, which ensures an accurate crystal structure determination through synchrotron XRD, neutron powder diffraction, single XRD combined with <sup>6</sup>Li NMR and <sup>57</sup>Fe Mössbauer spectroscopies.
Reduction of the wavelength in on-chip light circuitry is critically important not only for sake keeping up with Moore's law photonics but also reaching toward spectral ranges operation emerging materials, such as atomically thin semiconductors, vacancy-based single-photon emitters, and quantum dots. This requires efficient tunable sources well compatible waveguide networks. For first challenge, halide perovskites are prospective materials that enable cost-efficient fabrication micro-...
Engineering of nonlinear optical response in nanostructures is one the key topics nanophotonics, as it allows for broad frequency conversion at nanoscale. Nevertheless, application developed designs limited by either high cost their manufacturing or low efficiencies. This paper reports on efficient second-harmonic generation a free-standing GaP nanowire array encapsulated polymer membrane. Light coupling with resonances and field confinement nanowires together nonlinearity material yield...
Metal-organic frameworks (MOFs) have been recently explored as crystalline solids for conversion into amorphous phases demonstrating non-specific mechanical, catalytic, and optical properties. The real-time control of such structural transformations their outcomes still remain a challenge. Here, we use in situ high-resolution transmission electron microscopy with 0.01 s time resolution to explore non-thermal (electron induced) amorphization MOF single crystal, followed by transformation an...
We have developed a novel nanophotonic design representing plasmonic hybrid Au–Si nanosponge structure. The obtained results provide an understanding of the internal structure and physics this nanosponge.
Laser conversion of metal-organic frameworks (MOFs) has recently emerged as a fast and low-energy consumptive approach to create scalable MOF derivatives for catalysis, energy, optics. However, due the virtually unlimited structures tunable laser parameters, results their interaction are unpredictable poorly controlled. Here, we experimentally base general nano- centimeter-scale with desired nonlinear optical catalytic properties. Five three- two-dimensional MOFs, differing in chemical...
The urea oxidation reaction (UOR), with its low thermodynamic potential, offers a promising alternative to the oxygen evolution (OER) for efficient hydrogen production. However, sluggish kinetics still demand development of an electrocatalyst. In this study, critical role Ru doping in Fe₂TiO₅ is demonstrated accelerate UOR kinetics. computational finding confirmed feasibility approach, guiding experimental synthesis Fe2-xRuxTiO5. Benefitting from surface properties and electronic structure,...
Abstract Platin ist das am vielseitigsten eingesetzte Element in der Katalyse. Allerdings begrenzt hohe Preis des Edelmetalls die Verwendung vielen Bereichen, z. B. Katalysatormaterialien für Brennstoffzellen. Trotzdem nutzen konventionelle Katalysatoren oftmals nur einen Bruchteil ihres Pt‐Gehaltes, nämlich diejenigen Atome, sich auf Oberfläche Katalysators befinden. Eine effizientere Edelmetallnutzung setzt somit eine höhere, bevorzugt atomare Dispersion Pt‐Atome voraus. Tatsächlich es...
We report the physical and electrical characterization of a series substituted imidazolium-based ionic liquids grafted on Stöber-type SiO2. This hybrid architecture affords an increase lithium transference to 0.56 by hindering TFSI– (bis(trifluoromethane)sulfonimide) mobility total conductivity. When doped with 16 wt % LiTFSI, resulting organic/inorganic solid material exhibits diffusion coefficient 2 × 10–12 m2/s at 87 °C conductivity ca. 10–6 S/cm room temperature 10–4 65 activation energy...
Abstract The conversion of metal–organic frameworks (MOFs) into derivatives with a well‐defined shape and composition is considered reliable way to produce efficient catalysts energy capacitors at the nanometer scale. Yet, approaches based on conventional melting MOFs provide such as amorphous carbon, metal oxides, or metallic nanoclusters an appropriate morphology. Here ultrafast utilized by femtosecond laser pulses new generation complex morphology enhanced nonlinear optical response. It...
Abstract Luminescent security labels are effective platforms for protection of consumer goods from counterfeiting. However, the lifetimes such approaches limited due to narrow‐band photoluminescent features label elements, which can be used technology disclosure. In this paper, a novel concept application non‐linear white‐light luminescence hybrid metal–semiconductor structures fabricated by direct femtosecond laser writing creation physically unclonable is proposed. A close connection...
Core–shell particles made of calcium carbonate and coated with biocompatible polymers using the Layer-by-Layer technique can be considered as a unique drug-delivery platform that enables us to load different therapeutic compounds, exhibits high biocompatibility, integrate several stimuli-responsive mechanisms for drug release. However, before implementation diagnostic or purposes, such core–shell require comprehensive in vivo evaluation terms physicochemical pharmacokinetic properties....
A joint experimental and theoretical study is presented to reveal the influence of nitrogen doping on optical electrical properties NiO thin films. Nitrogen addition can significantly enhance subgap absorption. The molecular state (N2) has been identified in these doped films by electron energy loss spectroscopy.
In recent decades, antibiotic resistance has become a crucial challenge for human health. One potential solution to this problem is the use of antibacterial surfaces, i.e., copper and alloys. This study investigates properties brass that underwent topographic surface functionalization via ultrashort pulsed direct laser interference patterning. Periodic line-like patterns in scale range single bacterial cells were created on with 37% zinc content enhance contact area rod-shaped Escherichia...