Materials Literature
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Local structure of Ti-based additives in Mg(BH4)2 was studied by X-ray absorption fine structure spectroscopy with conventional and dispersive mode in order to understand the correlation between the structure of the additives and dehydrogenation property of Mg(BH4)2. Simultaneous measurement of the dehydrogenation cur…
Prototype Fast Breeder Reactor (PFBR) is a 500 MWe pool type sodium cooled reactor. The main function of Steam Generator (SG) is to extract the reactor heat through secondary sodium system and convert the feed water into superheated steam in the tubes of SG. The Steam Generator is a vertical, once through, shell and t…
The combination of scanning impedance microscopy and conductive atomic force microscopy was applied to single crystals of the perovskite-type oxide CaCu3Ti4O12 (CCTO) in order to provide a local dielectric characterization on ingot sections. Both techniques clearly showed dielectric heterogeneities due to the presence…
A convenient method for surface modification is crucially important for the preparation of a functional interface. The precise control of surface properties by chemical and physical approaches is expected to enhance the potential application of innovative nanomaterials. In this study, we propose a methodology for conv…
The effect of zeolite Y precursor on the formation of MCM-41 containing zeolite Y building units has been investigated by means of UV Raman spectroscopy, X-ray diffraction (XRD), infrared spectroscopy (IR) and electron microscopy (SEM and TEM). Study of the precursor formation shows that 4-membered ring species are fo…
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…