Materials Literature
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γ‐Fe 2 O 3 nanoparticles coated with a layer of FeCl 3 ·6H 2 O were prepared by chemically induced transition in FeCl 2 solution. NaOH was added to the reaction solution, to investigate the effect of alkalinity on the resulting particles. Vibrating sample magnetometry, transmission electron microscopy, X‐ray diffracti…
Microwave complex permittivity measurements of different nanodiamond powders were measured (in the range of 10nm to 1µm). We have developed a low resolution, high accuracy broadband measurement system using our cylindrical cavity resonator consisting of 6 transverse magnetic (TM) modes ranging from 2.49GHz to 9.43GHz.…
We report recent progress in a novel cerium hydroxide polishing slurry with particle size of about 5 nm nano size cerium hydroxide (NSC) abrasive. NSC has succeeded in omitting particles over 1 μm, and in reducing scratches to 1/30 of those with calcined ceria slurry. Even though, NSC maintains oxide removal rate simi…
Abstract For VLSI, internal electrical measurements are key steps to solve design debug issues and to perform failure analysis. Due to multiple metal layers, active areas of the chip are only accessible from the backside of the die. The ability of optical contactless techniques to operate through the silicon substrate…
This paper addresses the fracture toughness ( ), or also known as critical stress intensity Factor, according to conditions of Lineal Elastic Fracture Mechanics (LEFM). The characterization of the mechanical properties in tensile and fracture toughness of structural steel pipes API-5L used in hydrocarbons transportati…
The isochoric thermal conductivity of solid tetrahydrofuran C4H8O (a cyclic hydrocarbon with pseudorotational motion of molecules) was studied using samples of different density in the temperature range 120−180 K. For all the samples, the isochoric thermal conductivity was found to decrease with temperature following…
In this work, we study a model of a one-dimensional magnetic metamaterial formed by a discrete array of nonlinear resonators. We focus on periodic and localized traveling waves of the model, in the presence of loss and an external drive. Employing a Melnikov analysis we study the existence and persistence of such trav…
Metal-free micro-replicated conditioning disks are applied to the development of Cu and Cu barrier CMP processes for 22nm technology nodes. Compared with traditional pad conditioners with diamond grits embedded in metal matrix, the micro-replicated conditioners demonstrate lower within-wafer non-uniformity, more stabl…
The possibility of modifying the powder alloy of the Fe-Cu-Co-Sn-P system with multilayer carbon nanotubes (MCNTs), fullerenes, and nanodispersed and ultradispersed diamonds in order to fabricate a composite material with increased mechanical properties that can be used as a binder for a diamond cutting tool is consid…
Purine nucleobases, guanine and adenine, are known electroactive compounds which get oxidized over the carbon electrodes. These compounds are found to react with benzene derivatives forming its adducts. The formation of these adducts was electrochemically monitored using carbon electrodes from the changes in oxidation…
Butyl rubber is an isobutylene/isoprene copolymer and is provided with good properties including low permeability to gases, good thermal stability and high resistance to oxygen and ozone action, among others. It is well known that the end-use rubber properties depend on the state of cure distribution in the rubber pro…
In this paper, we report the electric and magnetic effects after inserting Fe nanoparticles into the MgO layer of a Ta(25)/Co20Fe60B20(1.3)/MgO(1)/Fe(x)/MgO(1)/Co40Fe40B20(2.2)/Ta(5) structure. The samples were annealed at 300 °C without external magnetic field. Temperature dependence of resistivity and the anomalous…
Cement paste shrinkage and influence of the shrink-resistant additive Estrifan Additive RCL on this process were studied, both when the latter one was used independently, and in a combination with the superplasticizer Muraplast FK48, and powdery fillers - fly ash and silica fume Reftinskaya TPP ISU-85. It has been rev…
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Influence exerted by the structure of layers of titanium dioxide produced by chemical vapor deposition on its ability to form hydroxyapatite in Dulbecco’s phosphate-salt buffer solution was studied. The results obtained demonstrated that the surface phase composition of TiO 2 determines the morphology of the mineral l…
Methionine γ-lyase [EC 4.4.1.11] participates in methionine catabolism in a number of bacteria and protozoa eukaryotes, including pathogenic microorganisms. The lack of this enzyme in mammals allows us consider it to be a promising target for rational antibacterial drug design. Currently, in medical practice, there ar…
The changes in the phase composition and the mechanical and magnetic properties resulting from the nanocrystallization of an Fe 80.2 P 17.1 Mo 2.7 amorphous alloy activated by heat or fast photon (xenon lamp radiation) treatment are compared using X-ray diffraction, Mössbauer spectroscopy, transmission electron micros…
Aim: Extensive or irreversible damage to the skin often requires additional skin substitutes for reconstruction. Biomaterials have become critical components in the development of effective new medical therapies for wound care.
The dynamic charge susceptibility as a function of the wave vector and the frequency has been analyzed in the context of the existing experimental data on the plasmon frequencies, softening of the longitudinal phonon modes, and charge density waves in the electron subsystem of the high-temperature superconducting cupr…
The structure, morphology and properties of titanium-oxynitride coatings deposited by pulsed reactive magnetron sputtering were investigated. The methods of X-ray diffractometry, Raman spectroscopy, secondary ion mass-spectrometry and scanning electron microscopy are used. It is established that the structure, and the…