Materials Literature
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The EPR of Mn ions in the (La1−y Pry)0.7Ca0.3MnO3 system has been studied within a broad range of temperatures (4<T<600 K) and Pr concentrations (0≤y≤1), as well as under isotope substitution of 18O for 16O. All compositions were shown to undergo transitions to a magnetically ordered state with decreasing temperature.…
Abstract The mechanical and thermal behaviour and the morphology of High‐Density Polyethylene (HDPE), filled with different types of Barium Sulfate (BaSO 4 ) submicron particles have been examined. Composites with a filler content in the range 5‐15 vol% were obtained with a twin screw mixer‐single screw extruder and t…
Polyurethane (PU) foam is molded into preheated tools and expands to fill the mold cavity. Foam parts frequently have defects such as varying density and flaws in surface texture. Although there are many possible causes uneven mold temperatures are suspected to be a leading cause of defects (1,2) . Much of the work pr…
The temperature dependence of the absorption spectra of 2,2'-bithiophene and 2,2':5',2''-terthiophene isolated molecules in cyclodextrin (CyD) were investigated between 15 K to room temperature (RT). The optical absorption spectra of BT molecules in β- and γ-CyD, (BT) β-CyD and (BT) γ-CyD are nearly the same between 1…
A publication of the French Society of Microscopies, Large-Angle Convergent-Beam Electron Diffraction Applications to Crystal Defects is devoted to an important aspect of electron diffraction. Convergent-beam diffraction is capable of furnishing remarkably accurate crystallographic information. In this book, the autho…
Using the band-structure method, we have studied the coupling between the magnetic ion $d$ states and the itinerant valence and conduction states in ${\mathrm{Be}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x}\mathrm{Te}$, ${\mathrm{Zn}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x}\mathrm{Se}$, ${\mathrm{Zn}}_{1\ensuremath{-}x}{\mathrm{…
We have reported that poly(2-methoxyethyl acrylate) (PMEA) shows excellent blood compatibility with respect to the coagulation, complement, leukocyte and platelet systems in vitro and ex vivo when compared with other polymer surfaces. In this study, to clarify the reasons for this good compatibility, the structure of…
The kinetics of flocculation and removal of Microcystis aeruginosa by chitosan-modified clays was studied. The efficiency of flocculating and removing of algal cells was greatly improved after the modification of the clays. About 80% of algae cell was removed in 0.5 hour, and 90% in 2 hours, when 11 mg/L modified sepi…
A technique is developed for measuring the modulus of elasticity of a material with a Nanoscan scanning force microscope on the basis of measuring the dependence of probe vibration frequency on the penetration depth of the needle into the specimen. This technique makes it possible to study materials with elastic modul…
Heavy-metal fluoride glasses are very promising optical fiber materials because of their predicted ultralow loss and long transparency range. Although conventional silica fibers have attained their theoretical minimum loss of 0.15 dB/km, fluoride glasses have the potential to yield losses of only 0.001 dB/km. Fluoride…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Zhizhong Liu, Montgomery T. Shaw, Benjamin S. Hsiao; Ordering kinetics of body-centered-cubic mor…
A study has been carried out to determine the feasibility of electrochemical removal of mercury ions from aqueous solution using carbon aerogel electrodes. In this work the influence of three parameters viz., initial concentration (2-8 mg/L), pH (2-9), and charge (0.3-1.3 Ah) on the percentage removal of mercury are e…
A Ni(II) complex of the composition Ni(HNta) · 4H 2 O ( I ) was synthesized. Its structure was found to consist of neutral mononuclear [Ni(HNta)(H 2 O) 3 ] complexes and crystallization water molecules. The Ni atom has octahedral surrounding and is coordinated to tridentate-chelate HNta 2– ligand through the N atom an…
This article reviews devices fabricated using room-temperature solution-casting compatible with silicon post-processing, which produce communications-wavelength electroluminescence. Integrable optoelectronics may be facilitated in this processible material system-one which may conveniently be combined with silicon ele…
A substantial portion of plastics waste consists of a mixture of polyolefins, i.e., polyethylenes of low and high density and polypropylene. These materials are immiscible and generally incompatible. To achieve good properties of the mixtures suitable for more demanding applications, the blends need to be compatibiliz…
Abstract Hollandite samples, Ba x (Ni x Ti 8— x )O 16 (1.1 < x < 1.40) made by ceramic techniques, have been studied by electron and X-ray diffraction. As a result, the barium nickel hollandite system is described as a composite modulated single phase solid solution made up of mutually incommensurable (along b )…
The structure and state of water within hydrating crystalline and amorphous sodium disilicate were monitored for the first time using quasi-elastic neutron scattering (QENS) and X-ray diffraction (XRD). The QENS kinetic data collected for the first 12 h of the reaction were fitted to a model consisting of a Lorentzian…
Low voltage scanning electron microscopy (SEM) metrology and inspection are performed by immersing the sample in an electric field; under this condition, when a scanning electron beam images a sample containing insulating features (like oxides and resist), a surface global charge builds up to offset the applied field…
The main characteristics required for a diffraction grating used for (de)multiplexing functions in spectral equalizing systems are investigated, both theoreticaly and experimentally. We show that volume-phase holographic (VPH) gratings can be used as dispersive elements instead of classic reflection surface-relief gra…
The synthesis of zinc oxide (ZnO) nanocrystallites by mechanochemical reaction of ZnCl2 and Na2CO3 with NaCl as diluent and following thermal treatment was investigated using X-ray diffraction (XRD) and transmission electron microscopy (TEM). Calcination of the as milled powder at 600°C in air and removal of NaCl thro…