Materials Literature
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A photoreactive rhodium dithionite complex [(RhCp(Et))(2)(μ-CH(2))(2)(μ-O(2)SSO(2))] (1(Et)) with Cp(Et) (η(5)-C(5)Me(4)Et) ligands was newly synthesized. Upon short-time irradiation with low intensity light, two kinds of stepwise surface morphology changes of the crystal 1(Et) were observed. Prolonged irradiation wit…
This paper deals with the synthesis of hexagonal-shaped silver nanoplates with diameters ranging from 15 to 20 nm along with a smooth nanobulk of 120 nm. These nanoplates were prepared by a kinetically controlled solution growth method using mild reducing agent dextrose, polyvinylpyrrolidone (PVP<mml:math xmlns:mml="h…
AbstractThe aim of this study was to assess the tensile and tearing properties of newly developed structural denim fabrics after an abrasion load and to compare them with those of tradi-tional denim fabric. The fabrics developed were designed as large and small structural pattern and traditional denim fabric. All the…
The evaporation of methanol from needle-shaped particles of cellobiose octaacetate (COA) has been studied directly in a jacketed vacuum drier using in situ measurements by Raman spectrometry. A design of experiments (DoE) approach was used to investigate the effects of three parameters (method of agitation, % solvent…
Sphere segment void, or inverse opal, films prepared from a variety of coinage metals have shown promise as reliable and reproducible substrates for surface enhanced Raman spectroscopy (SERS). Sphere segment void substrates are prepared from colloidal templates consisting of one or more layers of polystyrene spheres.…
The electromagnetic losses and shielding efficiency of shields for a buried three phase high voltage cable are studied for several shielding configurations. The shields are U-shaped gutters covered with plates, and the power cables are positioned either in trefoil or in flat configuration. The shielding efficiency and…
Biocomposite made of polylactic acid (PLA) reinforced with natural kenaf bast fibre (KF) using twin screw extruder and injection molding machine has been developed. The effect of kenaf fibre content on crystallization and melting behavior has been studied by means of differential scanning calorimetry (DSC). The amourp…
A series of iron(II) chloride complexes of pentadentate ligands related to α,α,α',α'-tetra(pyrazolyl)-2,6-lutidine, pz(4)lut, has been prepared to evaluate whether pyrazolyl substitution has any systematic impact on the electronic properties of the complexes. For this purpose, the new tetrakis(3,4,5-trimethylpyrazolyl…
We report growth and optical properties of a novel system of CdTe nanoparticls doped P2O5–Na2O–ZnO– Li2O glass matrix. We have investigated the effect of concentration, annealing time and temperature on the band gap and size of the CdTe semiconductor nanoparticles. In addition the effect of adding ZnO to the glass mat…
A series of single-doped and multidoped Ca 8 MgGd(PO 4 ) 7 :Ln 3+ , Mn 2+ (Ln 3+ = Ce 3+ , Tb 3+ , and Dy 3+ ) phosphors were synthesized by solid-state reaction, and their photoluminescence properties under vacuum ultraviolet excitation were evaluated. From the emission spectra excited at 147 nm, it can be found that…
Nanoscale materials offer new possibilities for the development of novel remediation and environmental monitoring technologies. Different nanoscale materials have been exploited for preventing environmental degradation and pollutant transformation. However, the rapid self-aggregation of nanoparticles or their associat…
In this paper, Zn2TiO4 and TiN nanofibers were prepared by a facile combination of electrospinning followed by thermolysis under different atmospheres. An N,N-dimethyl formamide (DMF)–ethanol solution of poly(vinylpyrrolidone) (PVP), Ti(IV)–isopropoxide (Ti(OC4H9)4) and zinc acetate (ZnAc) was used as the electrospinn…
Bi2+-enhanced photoluminescence of Eu3+ doped Bi0-bismuth glass nanocomposites are demonstrated here. The generation of bismuth nanoparticles (NPs) and its typical surface plasmon resonance at 460 nm are controlled by the oxidative method instead of the conventional reduction technique during melt-quench processing. T…
A versatile synthetic method, based on a solvothermal synthesis technique, has been developed for the fabrication of TiO(2) nanocrystals with different shapes, such as nanowires, nanorods and nanospheres. The central characteristic of our approach is the production of a coordination complex at an intermediate stage of…
Li + /Er 3+ /Yb 3+ tridoped CaWO 4 polycrystalline powders were prepared by a solid-state reaction method and their upconversion (UC) luminescence properties were investigated in detail. Under 980 nm laser excitation, CaWO 4 :Li + /Er 3+ /Yb 3+ powder exhibited weak red emission near 680 nm and strong green UC emissio…
The relationship between the local structural changes and the oxide ion diffusion in La0.6Sr0.4FeO3−δ was investigated. The oxygen vacancy concentration in La0.6Sr0.4FeO3−δ was varied by annealing under various oxygen partial pressures. Local structural changes of La0.6Sr0.4FeO3−δ with the introduction of oxygen vacan…
The influence of stresses on the magnetic properties of non-oriented electrical steels was studied. The dependence of iron loss on compressive stress was affected by grain size. The magnetic polarization J at high magnetic fields such as 5000A/m and 10000A/m increased by compressive stresses and decreased by tensile s…
In this experimental study, the cutting performance of ball-end mills in high-speed dry-hard milling of powder metallurgical steels was investigated. The cutting performance of the milling tools was mainly evaluated in terms of cutting length, tool wear, and cutting forces. Two different types of hardened steels were…
The Ru(bipy)(3) dication is efficiently and reversibly transferred into perfluorocarbons due to the formation of a highly fluorophillic hydrogen-bonded fluorous carboxylate-carboxylic acid counter-anion, whilst retaining key luminescence and photosensitizer characteristics, for example in singlet oxygen production.
We present a two dimensional simulation based on the cellular Potts model of a liquid droplet sliding down a ramp of pillars. For the same critical angle at which a droplet starts to slide with minimal velocity on a smooth ramp in our simulation, we find that for a ramp of pillars the velocity of the droplet depends s…