Materials Literature
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In order to design high-quality threads, it is necessary to know the properties of threads and fibers, as well as the loadings and deformations which may occur during the sewing process. Thread properties depend on the mechanical properties of the fiber and the constructional parameters of the thread and its surface t…
Dynamic heterogeneity in miscible blends was investigated by the use of dielectric relaxation spectroscopy for blends composed of poly(vinylethylene) (PVE) and various polyethers, i.e., poly(butylene oxide) (PBO), poly(isopropyl glycidyl ether) (PiPGE), poly( n -butyl glycidyl ether) (PnBGE), and poly( tert -butyl gly…
Nitrogenated amorphous carbon (a-CNx) films were prepared by unbalanced magnetron sputtering (UBMS) at different N2∕Ar gas flow rate ratios and different bias voltages. The films were characterized using x-ray photoelectron spectroscopy, Raman scattering, nanoindenter, atomic force microscopy nanoscratch, and contact…
A room-temperature sol-gel-based process was used to produce by direct synthesis talc-like organosilicates having hexadecyl or aminopropyl groups pending in the interlayer space. Thermal analyses, Fourier transform infrared and 13C/29Si solid-state nuclear magnetic resonance spectroscopies confirmed the presence of or…
The FP project is an international reactor safety project. Its main objective is to study the release, transport and retention of fission products in a severe accident of a light water reactor (LWR). The FPT4 test was performed with a fuel debris bed geometry, to look at late phase core degradation and the releases of…
Abstract We report a strong chemical structure dependence for the individual dissolution of single-walled carbon nanotubes (SWNTs) in aqueous micelles of six steroid biosurfactants including sodium cholate (SC), sodium deoxycholate (SDC), sodium taurodeoxycholate (STDC), sodium glycocholate (SGC), 3-[(3-cholamidopropy…
Multi‐materials are combinations of monolithic materials in a chosen configuration and scale. They can help populate the material property space and fill areas monolithic materials cannot reach. This paper presents a novel approach to compare the performance of monolithic materials and multi‐materials in multi‐criteri…
X-ray luminescence from CdTe nanoparticles is observed when CdTe nanoparticles are encapsulated into BaFBr:Eu2+ phosphors. In contrast, negligible x-ray luminescence is observed from the unencapsulated nanoparticles, either in solution or in solid form. The origin of the x-ray luminescence is attributed to the effecti…
On the basis of x-ray structural data and studies of the electrical, magnetic, and magnetoresistive properties and the ferromagnet resonance spectra of ceramic samples of La0.7Sr0.3Mn1−xFexO3 (0⩽x⩽0.10) it is established that a competition between structural changes influencing the ferromagnetism leads to a monotonic…
In this paper, a low-temperature stress-free electrolytic nickel (EL) deposition process with added dispersed diamond nanoparticles (diameter <0.5 /spl mu/m) is developed to synthesize Ni-diamond nanocomposite for fabricating electrothermal microactuators. Device characterization reveals dramatic performance improveme…
Several methodologies for the synthesis of corroles that carry minimal-sized electron-withdrawing substituents at the meso- C atoms were investigated; of these the one based on dypyrromethane/aldehyde condensation was fruitful. The new corrole with one C 6 F 5 and two CF 3 groups, as well as its cobalt(III) complex, w…
For nearly 50years, piezoelectric ceramics (primarily from the PZT family) have been the materials of choice as the active elements in underwater electroacoustic sound projectors. There is currently great interest in the materials science community for the consideration of newly discovered single crystal relaxor ferro…
SrTiO 3 thin films were deposited on vitreous silica substrates at various substrate temperatures (300–700°C) by rf magnetron sputtering technique. The transition from amorphous phase to polycrystalline phase for the films occurred at the substrate temperatures of 300–400°C. Their optical properties were investigated…
Abstract Nanocomposites of three different styrenic polymers (polystyrene – PS, styrene‐butadiene‐styrene triblock copolymer – SBS, and styrene‐ethylene/butylene‐styrene triblock copolymer – SEBS) containing organophilic silicates have been prepared using three different techniques. The materials were prepared by melt…
Abstract Mixed-ligand dinuclear Cu(I) complexes containing both diimine and diphosphine ligands have demonstrated interesting photophyisical properties; the complexes are emissive in solution at room temperature, even with 1,10-phenanthroline (phen) lacking a 2,9-substituted group.
The diffusion tensor and velocity correlation function of a Brownian particle immersed in a viscous compressible fluid confined between two parallel plane walls are calculated in point approximation. The fluid is assumed to satisfy stick boundary conditions at the walls. It is found that the velocity correlation funct…
Generally, ZnS–SiO 2 thin film is used as a protective layer in phase-change optical media. The wet etching characteristics of ZnS–SiO 2 have been investigated, and it was found that ZnS–SiO 2 can be patterned by laser irradiation and wet etching. Convex patterns of ZnS–SiO 2 with steep taper profiles were formed. The…
The ferroelectric properties of Pt∕Pb(Zr0.6Ti0.4)O3∕Pt∕TiO2∕SiO2∕Si thin-film capacitors with different thicknesses are investigated. According to the literature data, tilting of the hysteresis loops and marked increase of the coercive fields are observed when the thickness of the film is reduced. The degradation of t…
The convergent syntheses of three generations of carbosilane dendrimeric carbodiimides are described. The wedge-type building blocks were synthesized in a divergent way, starting from allyl chloride and a repetitive sequence of hydrosilylation with HSiCl3 and a Grignard reaction with allylmagnesium bromide. Hydrogenat…
The present study was focused on the effect of chitosan, a linear amino-polysaccharide, on the properties of handsheets made from bleached kenaf kraft pulp. Chitosan was incorporated into the sheets by three distinct techniques, equilibrium adsorption (pH 5), precipitation (pH 10), and spray application. The chitosan…