Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
In this work, surface treatment of nanodiamonds (NDs) produced by a detonation technique has been conducted using oleic acid and dodecylamine in order to achieve a stable dispersion in oil. From Fourier transform infrared spectroscopy (FTIR) analyses, it was found that the NDs have various surface functional groups su…
Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.
By depositing a superconductor on gapped graphene (graphene grown on SiC substrate), the motion of quasiparticles in this superconductor is explained by the massive Dirac equation. In this paper, we study the spin dependent transport properties of graphene-based ferromagnetic/insulator/superconductor (FIS) junction an…
A phenomenological model is proposed to describe the magnetic and magnetoresistance properties of ferromagnetic manganites. This model is based on the methods used to describe hysteretic systems, takes into account phase separation effects, and assumes the transition of ferromagnetic manganites into the Griffiths phas…
High product yield of highly crystalline layered MxV3O8 compounds was obtained under hydrothermal conditions from the V2O5-Zn(OAc)22H2O-alkali metal salt-H2O system at significantly lower reaction temperature than previously reported in neutral media for x = 1 and M = K + , Rb + , and Cs + , and in basic media for x =…
We have observed the in-plane magnetic domain arrangement during magnetization reversal in a 40 nm thick La0.7Sr0.3MnO3/SrTiO3 (001) thin film patterned into 500 μm long microbridges of width 50 or 100 μm. Magneto-optical Kerr effect microscopy was used at room temperature and magnetic hysteresis loops were deduced fr…
Pulse-width modulated adjustable frequency drives are extensively used in the industries for control of induction motors. It has led to significant advantages in terms of the performance, size, and efficiency of variable speed motor controls but the applied voltage and current waveforms become non sinusoidal. These no…
Carbon nanotubes (CNTs) have been under intense investigations during the past two decades due to their unique physical and chemical properties; however, there is still no commonly accepted growth mechanism to describe the growth behavior of CNTs. Here, we propose a nano Czochralski (CZ) model which regards the cataly…
Strong reinforcing effects are observed when multiwall carbon nanotubes are incorporated in a styrene–butadiene copolymer. The good level of dispersion of carbon nanotubes in the host matrix that allows to take advantage of their high aspect ratio as well as their orienting capability under uniaxial extension, appear…
Vinyl polymers offer the particularity that small modifications in their microscopic structures can lead to drastic effects at the macroscopic level. Full-atomistic simulations are thus genuinely invaluable for probing the results of such variations in backbone architectures, alternations of side chains and so on. How…
Nano/microstructures of zinc oxide (ZnO) were grown by the laser assisted flow deposition (LAFD) method. This new process has proved to be very efficient, allowing high yield ZnO deposits at high-rate applicable to large-scale substrates. Laser local heating promotes fast ZnO decomposition and recombination under a se…
Rice straw (RS) polypropylene (PP) composites were prepared in the different ratios of 10:90, 20:80, 30:70, 40:60 and 50:50 (RS wt% : PP wt%) by extrusion moulding and hot press compression technique and investigated the mechanical properties like tensile strength (TS), bending strength (BS), impact strength (IS) and…
A procedure for the synthesis of hexa- p -hydroxymethylphenoxycyclotriphosphazene is optimized. The thermal characteristics of this compound are studied, and its capability for thermal self-con-densation is demonstrated. The main steps of polycondensation of hexa- p -hydroxymethylphenoxycyclotriphosphazene involve the…
In our tunneling investigation using Andreev superconductor-normal metal-superconductor contacts on LiFeAs single crystals we observed two reproducible independent subharmonic gap structures at dynamic conductance characteristics. From these results, we can derive the energy of the large superconducting gap ΔL = (2.5–…
The properties of miniature cantilever-type ultrasonic motors using lead-free array-type multilayer piezoelectric ceramics of (Sr,Ca) 2 NaNb 5 O 15 (SCNN) developed using the design rule were investigated under high input power by comparison with the high-power properties of SCNN ceramics. The frequency dependence of…
This work describe the optical and electrical properties of indium tin oxide (ITO) thin films prepared by thermal evaporation method on flexible plastic substrate (polyethylene terephthalate (PET)). The optical transmission and absorption of ITO films in the visible and UV rang have been studied. The resistivity, shee…
The surface of chlorinated and fluorinated nanodiamond obtained by detonation synthesis was modified with ethylenediamine and hexamethylenediamine. Nanodiamonds with grafted diamines were found to manifest photoluminescence in Raman spectra; the occurrence and intensity of luminescence depended on the chemical nature…
We investigate the polarization properties of a two-dimensional (2D) array of metallic elliptical nanoholes in the visible wavelength region. The calculated spectra reveal that such a nonchiral structure exhibits a circular dichroism. The proposed structure is a 2D anisotropic system that possesses two principle polar…
The paper deals with the study of the effect of the intensity of the pulse laser irradiation of a graphite target (the fluence) on the rate of deposition, density, and the mechanical and tribological properties of diamond-like carbon coatings formed on a steel substrate at room temperature. The diminishing of the flue…
CEA and AREVA_NC have developed and used a depletion code named CESAR for 30 years. This user-friendly industrial tool provides fast characterizations for all types of nuclear fuel (PWR / UOX or MOX or reprocess Uranium, BWR / UOX or MOX, MTR and SFR) and the wastes associated. CESAR can evaluate 100 heavy nuclides, 2…