A5035659294- Diamond and Carbon-based Materials Research
- Energetic Materials and Combustion
- Carbon Nanotubes in Composites
- High-pressure geophysics and materials
- Graphene research and applications
- Thermal and Kinetic Analysis
- Force Microscopy Techniques and Applications
- Laser-Ablation Synthesis of Nanoparticles
- Nonlinear Optical Materials Studies
- Rocket and propulsion systems research
- Ion-surface interactions and analysis
- Electrohydrodynamics and Fluid Dynamics
- Fiber-reinforced polymer composites
- Mechanical and Optical Resonators
- Advanced Fiber Laser Technologies
- Electronic and Structural Properties of Oxides
- Nanotechnology research and applications
- Combustion and Detonation Processes
- Intermetallics and Advanced Alloy Properties
- Terahertz technology and applications
- Fullerene Chemistry and Applications
- Photonic and Optical Devices
- Spectroscopy and Laser Applications
- Advanced Fiber Optic Sensors
- Advanced Physical and Chemical Molecular Interactions
Institut Franco-Allemand de Recherches de Saint-Louis
2009-2024
Centre National de la Recherche Scientifique
2010-2022
Nanomatériaux Pour les Systèmes Sous Sollicitations Extrêmes
2013-2022
Laboratoire de physique des Solides
2004-2010
Université Paris-Sud
2004-2010
Institut de Physique et Chimie des Matériaux de Strasbourg
2007
Institute for Solid State Physics and Optics
2006
Eötvös Loránd University
2006
Laboratoire Francis Perrin
2005
CEA Paris-Saclay
2005
We report a new hot-drawing process for treating wet-spun composite fibers made of single- and multiwall carbon nanotubes poly(vinyl alcohol). As shown in previous reports, untreated nanotube exhibit very large strain-to-failure, their toughness, which is the energy needed to break fibers, exceeds that any other known materials. However, absorb small amount at low strain become degraded humid conditions. In this work, we use treatments, concept inspired from textile technologies, improve...
Cocrystals, solid mixtures of different molecules on molecular scale, are supposed to be tailor made materials with improved employability compared their pristine individual components in domains such as medicine and explosives. In medicine, cocrystals obtained by crystallization active pharmaceutical ingredients precisely chosen coformers design medicaments that demonstrate enhanced stability, high solubility, therefore bioavailability optimized drug up-take. Nanoscaling may further advance...
We synthesized aligned multiwalled carbon nanotube multilayers by aerosol-assisted catalytic chemical vapor deposition through sequential injections of aerosols containing both and catalyst precursors. Each sequence was traced a specific duration or precursor mixture, with the source being possibly enriched in (13)C isotope labels. discovered that any involved growth new layer on substrate surface, under pre-existing one lifting it up, giving definitive evidence base-growth mechanism.
The detonation process is able to build new materials with a bottom-up approach. Diamond, the hardest material on earth, can be synthesized in this way. This unconventional synthesis route possible due presence of carbon inside high-explosive molecules: firing mixtures negative oxygen balance non-oxidative environment leads formation nanodiamond particles. Trinitrotoluene (TNT) and hexogen (RDX) are explosives primarily used synthesize nanodiamonds. Here we show that use nanostructured...
We report structure-property correlations in single-wall carbon nanotube (SWNT) fibers, among electrical, thermal, and chemical parameters with respect to stretch-induced preferential SWNT alignment along the fiber axis. Purified HiPco (high-pressure CO) conversion tubes are dispersed aid of an anionic surfactant coagulated co-flowing stream adsorbing polymer. The fibers then dried, rewetted under tensile load, redried improve alignment. Complete removal polymer was assured by annealing...
Detonation nanodiamonds exhibit strong nonlinear optical properties depending on their electronic properties. In the present paper, nanodiamond functional groups are chemically modified to obtain with primary amines surface. The of such placed in water suspensions studied and compared one classical detonation nanodiamonds. Transmission, scattering Z-scan experiments performed for two different wavelengths (532 nm 1064 nm). A lower threshold limiting associated more pronounce non-linear...
The main goal of doping detonation nanodiamonds with nitrogen is to obtain stable photoluminescence properties. Small quantities have already been evidenced in such nanodiamonds. This article deals the possibility increasing content inside nanodiamond samples. Electron energy loss spectroscopy a very useful tool for determining location and quantity within individual experimental results demonstrate that strongly depends on precursors used composition explosive charge: incorporation melamine...
Abstract This work focuses on the optical limiting behavior of surface modified nanodiamonds (DNDs) namely, amino-terminated DNDs (DND-NH2) and hydrogen-terminated (DND-H). Their relevant nonlinear properties for are compared to those unfunctionalized DNDs. The limitation is characterized by means transmittance, Z-scan, scattered intensity assessments when submitted a nanosecond pulsed Nd:YAG laser operating at wavelength 532 nm. It stated that largest attenuation attributed DND-H system,...
This letter reports structural results obtained from x-ray scattering measurements performed on individual carbon nanotube carpets. Carpets of aligned multiwalled nanotubes are synthesized by the aerosol pyrolysis method using liquid hydrocarbon∕metallocene aerosols. Nanotube alignment ±5.5° with respect to average growth axis is obtained. In addition, partially filled iron, and we demonstrate that body carpet contains mainly one phase (γ-Fe) encapsulated inside which exhibits a preferential...
This paper reports on the first attempt to enclose diamond nanoparticles--produced by detonation--into a Kevlar matrix. A nanocomposite material (40 wt% diamond) was prepared precipitation from an acidic solution of containing dispersed nanodiamonds. In this material, nanoparticles (Ø = 4 nm) are entirely wrapped in layer about 1 nm thick. order understand interactions between nanodiamond surface and polymer, oxygenated functional groups were identified titrated Boehm's method which revealed...
Boron submicrometer particles (22.3 m2/g) were used as fuel to prepare energetic compositions with bismuth(III) oxide (2.7 and copper(II) (10.7 m2/g), leading unconventional submicrometer-thermites being made solely of ceramic compounds. The morphology the mixtures was studied according their boron content: (i) by comparing calculated apparent density experimental one (ii) a photometric technique based on analysis gray levels samples. early step reaction, corresponding preignition exotherm...
We report quantitative experimental study correlating the structure and mechanical properties of fibers made from single-walled carbon nanotubes (SWNTs) polyvinyl alcohol (PVA). A post-synthesis solvent drawing treatment is used to vary nanotube alignment, whose detailed understanding a prerequisite for fiber development. Quantitative analysis alignment within with different draw ratios performed using x-ray scattering. The method described in detail, we also show that improvement ratio can...