Materials Literature
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The behavior of soft mode range with respect to the temperature width of smectic A (Sm A) phase has been studied in four different ferroelectric liquid crystal (FLC) materials in the frequency range 10Hz–10MHz. The studies have been carried out in a planarly well aligned cells at different temperatures and different b…
The effect of calcination temperatures (1000-1400 oC) on the phase formation and microstructure of barium strontium zirconate titanate [(Ba0.25Sr0.75)(Zr0.75Ti0.25)O3 ; BSZT] powders were investigated. BSZT powders were prepared and compared by the solid state reaction method and the combustion technique. The higher c…
From the viewpoints of plasma control and radiation safety, tritium retention in deposition layers is an important problem. In this study, deposition layers from type 316 stainless steel were formed by a sputtering method using hydrogen RF plasma at three different temperatures. The behavior of hydrogen release from t…
An investigation was conducted to predict the failure strength response of IG-100 nuclear grade graphite exposed to multiaxial stresses. As part of this effort, a review of failure criteria accounting for the stochastic strength response is provided. The experimental work was performed in the early 1990s at the Oak Ri…
We investigated the effects of Cr element substitution on thermal stability of magnetic flux and oxidation resistance of SmFeN compounds by X-ray diffraction (XRD), thermogravimetry analysis (TG), and flux aging loss measurement methods. We found that with increases in Cr substitution, the irreversible flux losses of…
The linting propensity of a woven cellulosic substrate is investigated as a function of substrate characteristics and of different parameters in the test environment. The results from the linting propensity tests parallel those observed in liquid—solid extraction processes, where solutes are extracted from a matrix of…
The curves of intracenter luminescence decay for Mn2+ ions in the Cd0.5Mn0.5Te semiconductor solid solution, obtained in a low-temperature experiment, have been simulated by the Monte Carlo method. The features of the kinetics of the 2-eV band in the time interval where significant nonexponentiality of relaxation at d…
This work presents a thermoelectric infrared microsensor which is designed and fabricated with TSMC CMOS-MEMS processes. The proposed device can achieve the responsivity of 432.3 V/W and time constant of 2.49 ms at 1 atm.
A fuel cell-supercapacitor hybrid power supply for portable applications is designed. To ensure system level simulation, each component is accurately modelled and simulation results are reported. A digital still camera is selected as specific load device, although the choice of a specific application does not influenc…
Abstract Photocatalytic reduction of Ag I 2 SO 4 from aqueous solutions is observed in the presence of Dawson‐derived sandwich type polyoxometalates (POMs) [M 4 (P 2 W 15 O 56 ) 2 ] 16− , M = Co 2+ , Ni 2+ and Zn 2+ as photocatalyst and an organic substrate (propan‐2‐ol) as sacrificial electron donor. The direct photo…
The purpose of this study is to assess the effect of van der Waals interactions within multi-walled carbon nanotubes with the three dimensional finite element models. The elastic buckling behaviors of nanotubes are treated under axial compressive force acting on open both ends of nanotubes and considered with various…
Polyhydroxyalkanoate (PHA) is biodegradable polyester, which can be synthesized by many microorganisms through catabolic pathway, without producing any toxic byproduct. Owing to it special and versatile properties, this polymer has attracted much attention as a possible replacement for traditional plastics in the futu…
The anomalous magnetocaloric effect in singlet rare-earth paramagnets near energy level crossing has been experimentally observed for the first time. The magnetization and differential magnetic susceptibility of Ho1 − x Y x VO4 crystals (x = 0, 0.5) measured along the tetragonal axis in a pulsed magnetic field with va…
The influence of additions of difficult-to-reduce Al 2 O 3 and MgO oxides on the dispersity and morphology of nickel-based and copper-based nanodimensional compositions during their obtainment by chemical methods is considered. The conditions of directed synthesis of metal oxide nanopowders allowing for the nature and…
The formation of a series of six-coordinate complexes (B)Co(TPP)(NO 2 ) (B is ketone, aldehyde, ether or epoxide; TPP is meso -tetraphenylporphyrin dianion) on exposure of thin films of five-coordinate Co(TPP)(NO 2 ) to vapors of the O-donor ligands was established by IR and UV/Vis spectroscopy (resorting to the data…
"Focus on martensitic transformations." Materials Science and Technology, 24(8), p. 883
The specific features of the thermodeformational behavior of Mn-Cu-based alloys with the two-way shape memory effect are revealed, and their connection with the diffusionless fcc → fct phase transition and the forming structure is discussed. The mechanism of the reversible thermal deformation caused by directed intern…
Bench scale (1 to 6 gram) methane cracking tests have been performed on a variety of pure elements, some alloys, and SAES® commercial getters St 101, St 198, St 707, St 737, and St 909 to determine methane cracking performance (MCP) of 5% methane in a helium carrier at 700°C, 101.3 kPa (760 torr) with a 10 sccm feed.…
Dielectric barrier discharge (DBD) as the source of nonthermal plasma has attracted the attention of many researchers in the field of diesel exhaust-gas treatment. The authors have studied the DBD, particularly using the anodic porous alumina, which have many pores with nanometer-order diameter and high aspect ratio,…
The feasibility of sintering on indium tin oxide (ITO) thin film by a mesoplasma under open atmosphere was investigated. An ITO film of 300 nm thickness was prepared on a glass substrate by spin coating an ITO nanoparticle suspension. A mesoplasma of a gliding arc was irradiated on the ITO film. The plasma generated a…