Multi-functional nc-MN/a-Si3N4 bulk ceramic nanocomposites prepared from metal-containing preceramic polymers
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Preparation of porous Si- and Al-based (carbo)nitrides from preceramic polymers
International audience
Monolith-type silicon titanium nitride ceramic nanocomposites: From synthesis to properties
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Focus on the interactions between artificial microstructural ageing and susceptibility to localized corrosion under cyclic corrosion tests of an aeronautic 2024-T351 aluminium alloy
The 2024-T351 aluminium alloy is widely used in aircraft industry especially for skin and wings due to its high-strength to weight ratio. During their service life, these structural parts can be submitted to different sources of damage as fatigue, corrosion and / or microstructural evolutions. In this work, fatigue wa…
Observation of Low-Frequency Raman Modes and Electronic Excitations In Atomically Thin MoS$_{2}$ Crystals
Atomically thin MoS$_{2}$ crystals have been recognized as a quasi-2D semiconductor with remarkable physics properties. This letter reports our Raman scattering measurements on multilayer and monolayer MoS$_{2}$, especially in the low-frequency range ($<$50 cm$^{-1}$). We find two low-frequency Raman modes with contra…
Temperature-dependent proximity magnetism in Pt
We experimentally demonstrate the existence of magnetic coupling between two ferromagnets separated by a thin Pt layer. The coupling remains ferromagnetic regardless of the Pt thickness, and exhibits a significant dependence on temperature. Therefore, it cannot be explained by the established mechanisms of magnetic co…
Direct observation of magnetic easy-axis rotation in magnetoelectric composites by Kerr microscopy
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Crystal structure determination from high-resolution proton NMR and crystal structure prediction
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Understanding and modeling of gain boundary pinning in Inconel718
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Chemical and microstructural characterization of propanethiol plasma polymer films by XPS and ToF-SIMS
Plasma polymer films (PPF) are promising organics materials for tailoring surface functional properties presenting a high crosslinking degree which influences its mechanical and thermal properties. In particular, propanethiol plasma polymer films (SH-PPF) could be useful for applications such as supports for gold nano…
Electrospray deposition from fountain pen AFM probes
In this paper we present for the first time electrospraying from fountain pen probes. By using electrospray contactless deposition in an AFM setup becomes possible. Experiments on a dedicated setup were carried out as first step towards this goal. Spraying from 8 and 2 µm apertures was observed. For the 2 µm apertures…
Cavitation-Induced Fusion: Proof of Concept
Cavitation-induced fusion (also known as bubble fusion or sonofusion) has been a topic of much debate and controversy and is generally (albeit incorrectly) perceived as unworkable. In this paper we present the theoretical foundations of cavitation-induced fusion and summarize the experimental results of the research c…
The Audio Frequency Conductance Study of Some Metal Succinate Salts in Aqueous Medium at Different Temperatures (Part I: Magnesium, Manganese (II), Barium and Copper Succinates)
The audio electrical conductances of aqueous solutions of magnesium, manganese II, barium, and copper succinates have been measured at various temperatures in the range of 298.15 K to 313.15 K, using an audio frequency conductance bridge. The evaluation of conductance data was carried out by minimisation technique usi…
EXPERIMENTAL AND NUMERICAL STUDY OF NITI HOLEY PLATES LOADED IN TENSION
International audience
Influence of hydrogen and oxygen content on the mechanical behavior of zirconium between 275 and 325°C and titanium at 20°C
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Coaxial Self-Trapping of White and Gray Regions of an Incandescent Field: A Bright Core with a Dark Cladding
We report the generation of a self-trapped incoherent hybrid beam comprising a dark-sheathed bright core. The hybrid beam originates from refractive index changes in a photocrosslinkable organosiloxane, which allow simultaneous and cooperative self-trapping of a gray ring with a white core embedded in a broad incandes…
Design and Characterization of Novel Biodegradable Polymer-Clay-HydroxyapatiteNanocomposites for drug delivery applications
In recent years, biodegradable polymer based nanocomposites have been used promisingly for various drug delivery systems and biomedical applications as compared to synthetic polymer composites because of the biocompatible and biodegradable behavior of natural polymers. These biodegradable polymer nanocomposites also s…
Experimental and numerical analysis of hydrogen interaction with plastic strain in a high strength steel
8 pages
Optimization of the Synthesis of Nanostructured Tungsten-Molybdenum Bimetallic Oxide
nanoparticles were prepared through the Pechini process and were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), FT-IR spectrometer, and differential thermal analysis (TG-DSC) analyses. The polyesterification reaction, as the starting step, has a profound influence on the dispersio…
Ultrasensitive On-Chip Immunoassays with a Nanoparticle-Assembled Photonic Crystal
Electrophoretic particle entrapment system (EPES) is employed to generate 2D array of nanoparticles coated with biological molecules (i.e., antibodies). Phase matching of the excitation and the emission in the 2D arrays with particles produces a highly enhanced fluorescence signal that was shown to improve the limit o…