A5089852600- ZnO doping and properties
- Plant and animal studies
- Polymer crystallization and properties
- Insect and Pesticide Research
- Polymer Nanocomposites and Properties
- Human-Animal Interaction Studies
- Diamond and Carbon-based Materials Research
- Graphene research and applications
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Gas Sensing Nanomaterials and Sensors
- GaN-based semiconductor devices and materials
- Electronic and Structural Properties of Oxides
- Health, Medicine and Society
- Healthcare Systems and Practices
- Insect and Arachnid Ecology and Behavior
- Atomic and Molecular Physics
- Animal Behavior and Welfare Studies
- Semiconductor Quantum Structures and Devices
- Wildlife Ecology and Conservation
- Carbon Nanotubes in Composites
- Silicon Carbide Semiconductor Technologies
- Conducting polymers and applications
- Plant Parasitism and Resistance
- Advanced Chemical Physics Studies
Université Le Havre Normandie
2024
Observatoire de la Côte d’Azur
2023
Université Côte d'Azur
2017-2023
Centre National de la Recherche Scientifique
2007-2022
MacDiarmid Institute for Advanced Materials and Nanotechnology
2020
Victoria University of Wellington
2020
University of Namur
2006-2010
Centre de Recherche sur l'Hétéro-Epitaxie et ses Applications
2008-2009
Institut National de la Recherche Agronomique
2008
Institut Agro Rennes-Angers
2007
Over the last 10 years, influence of dog–owner relationship on dog behaviour has received growing attention, unlike working handler's relationship. Using a questionnaire addressed to 430 handlers Belgian army in 2001 (303 respondents), this study investigated association between time spent by with their military (MD) and some behaviours these dogs, reflecting welfare, obedience, aggressiveness. Less than half took MD home and/or practised sport MD. Most practising also animal home....
Graphene growth from a propane flow in hydrogen environment (propane-hydrogen chemical vapor deposition (CVD)) on SiC differentiates other methods that it offers the possibility to obtain various graphene structures Si-face depending conditions. The different include (6√3 × 6√3)-R30° reconstruction of graphene/SiC interface, which is commonly observed Si-face, but also rotational disorder generally C-face. In this work, mechanisms leading formation are studied and discussed. For purpose, we...
We have developed a method to grow and characterize the state of art non-polar ZnO/(Zn,Mg)O multi-quantum wells on m-plane ZnO substrates as prerequisite for applications based intersubband transitions. The epilayer interfaces exhibit low roughness, layer thickness remains constant within one monolayer in these heterostructures. optical properties been studied UV IR domains by means photoluminescence absorption experiments, respectively. In UV, is very well described an excitonic transition,...
The growth by molecular beam epitaxy and the optical properties of GaN∕Al0.5Ga0.5N quantum dots on (0001) sapphire substrates are reported. spontaneously formed via a two dimensional to three transition upon interruption. Photoluminescence over blue range (435–470nm) is obtained at room temperature varying GaN nominal thickness. A weak dependence integrated photoluminescence intensity between low observed indicating strong carrier localization in dots.
We show that the shape of GaN nanostructures grown by molecular beam epitaxy on AlxGa1−xN (0001) surfaces, for x≥0.4, can be controlled via ammonia pressure. The are obtained from a two dimensional to three transition layer occurring upon growth interruption. Atomic force microscopy measurements depending pressure during interruption, dot or dash-shaped obtained. Low temperature photoluminescence reveal large redshift in emission energy quantum dashes, as compared dots. By simply adjusting...
While the integration of graphene on semiconductor surfaces is important to develop new applications, epitaxial has only been integrated SiC substrates or 3C-SiC/Si templates. In this work, we explore possibility growing AlN/Si(111) Using a chemical vapor deposition process with propane as carbon source, have obtained graphitic films (from 2 10 layers) while preserving morphology AlN layer beneath film. This study an step for semiconductors other than SiC.
The asymmetric wiggler, inserted since the end of 1990 on Super-Aco storage ring in Orsay, has been built to produce a high rate and flux circularly polarized soft x rays 100–3000 eV range. This insertion device is particularly well suited measure x-ray absorption spectra corresponding dipole transitions towards electronic orbitals that are directly responsible for magnetism (3d states first row transition metals, 4f rare earths). In this article we report magnetic circular dichroism...
Abstract Graphene growth on SiC using propane‐hydrogen CVD has been recently demonstrated. In contrast to the annealing method, in‐plane rotational disorder of graphene can be observed SiC(0001). this contribution, we study effects temperature interface between and SiC. We show that allows control formation with or a (6√3×6√3)‐R30° interface. Accordingly, grazing incidence X‐ray diffraction evidences an effect strain. These results are discussed basis hydrogenation surface. (© 2012 WILEY‐VCH...
Synchrotrons are powerful sources of an x-ray beam whose polarization state is well defined. The recent apparition insertion devices able to produce high flux circularly polarized light has impulsed new fields solid-state physics in spectroscopy or diffraction techniques. In this paper, the calculation circular rates taking into account characteristics synchrotron source and depolarization effect introduced by monochromatization on crystals presented here. From measurements magnetic...
A combined experimental and computational study is reported on a hitherto unrecognised single lanthanide catalyst for the breaking of molecular nitrogen formation ammonia at ambient temperature low pressure. We combine in situ electrical conductance electron diffraction measurements to track conversion from metals insulating nitrides. The efficiency then interpreted using $\mathrm{DFT}+U$ calculations, suggesting dissociation pathway separate that well established transition metals. Finally,...
The objective of this experiment was 1) to quantify drift between bumblebee, Bombus terrestris L., colonies when hives are vertically stacked; and 2) measure the impact on colony growth. conducted outside, in an open area, at three sites with one stack per site. Observations were made from 28th 58th d development, before competition point. Bumblebees regularly marked a colony-specific color access migrations cumulative births colonies. population size composition analyzed by dissection end...
The European Convention for the Protection of Pet Animals was opened signature in Strasbourg on 13 November 1987 and entered into force 1 May 1992. This states that: 'Surgical operations purpose modifying appearance a pet animal or other non-curative purposes shall be prohibited and, particular: docking tails'. At present, 15 27 States Union have ratified this (with without reserving their position tail docking) cosmetic surgical operations. In addition, four these operations, even though...
The objective of this experiment was 1) to quantify drift between bumblebee, Bombus terrestris L., colonies when hives are vertically stacked; and 2) measure the impact on colony growth. conducted outside, in an open area, at three sites with one stack per site. Observations were made from 28th 58th d development, before competition point. Bumblebees regularly marked a colony-specific color access migrations cumulative births colonies. population size composition analyzed by dissection end...