Materials Literature
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The diimino-diphenolato neutral square-planar Ni(ii) complex, NiL2, is readily oxidised with 2 equiv. of Ag[SbF6], to produce an unprecedented octahedral Ni(ii) tris(phenoxyl) radical complex, [Ni(L˙)3][SbF6]2. This study reveals, for the first time, the X-ray structure of a metal-tri-phenoxyl radical complex.
The matrix-dependent strain distributions of Au and Ag nanoparticles in a metal-oxide-semiconductor based nonvolatile memory device are investigated by finite element calculations. The simulation results clearly indicate that both Au and Ag nanoparticles incur compressive strain by high-k Al2O3 and conventional SiO2 d…
To decrease the cleanroom requirement of a MEMS chip fabrication, Nd:YAG laser machining is integrated into silicon micromachining. However, to get a smooth surface the laser parameters must be chosen carefully, and a subsequent wet chemical etching treatment of the surface is essential. The process is used to fabrica…
Effects of lattice deformations on Raman spectra were investigated in β-FeSi2 epitaxial films grown on Si substrates. The lattice of the epitaxial film was deformed depending on thermal-annealing temperature (Ta). In Raman spectra, Raman lines of Ag-mode (iron displacements) showed a frequency shift with increasing Ta…
Progress on two design approaches to patternable, low k dielectrics is described. These formulations are both print in negative tone and are based on polyhedral silsesquioxanes bearing benzocyclobutene moieties. The patternability was demonstrated and both materials have dielectric constants between 2.00–2.22 at optic…
We have designed, constructed and tested a prototype hydride-based container to in-situ observe the hydride decomposition process using a neutron imaging facility. This work describes the container design parameters and the experimental setup used for the studies. The results open new possibilities for the application…
Low Voltage (LV) underground power cables generally have a good reputation in terms of customer-minuteslost and ageing phenomena. However, in the Netherlands a slow but steady growth in the number of faults is observed. Since the increasing penetration of de-central generation is adding more pressure and given the hig…
The preparation method of hydrophobic gold nanoparticles (AuNPs) with the diameters of 17, 30 and 48 nm has been developed. So as to clarify the size effects of AuNPs on the hydrophobization processes, time courses for the formation of the self-assembled monolayers (SAMs) of octadecanethiol (ODT) molecules on the surf…
Chemical bond formation between polyester and a functional polymeric additive was tried by using multifunctional isocyanate (MFI) as a crosslinking agent.Reactions between desipramine, which is monomer unit of functional polymeric additive, and MFI afforded generation of the corresponding urea type compounds.According…
The Co-Ni-P nanorods were fabricated by electrodeposition method by using the porous polycarbonate template. The investigation by mean of X-ray diffraction and high-resolution transmission electron microscopy indicated that samples were nanocrystalline clusters embedded in the amorphous base. The samples exhibited a r…
Optically stimulated luminescence in doped K2SO4 is reported. K2SO4 was prepared by simple melt quenched process using readymade potassium sulphate. Samples were doped with Eu and AEu (A=Ca, Na and Al). Out of these samples K2SO4:Eu and K2SO4:Ca,Eu shows good OSL response to 470 nm optical stimulation. K2SO4:Eu and K2…
We complete the Solomon-Wilson-Alexiades’s mushy zone model (Solomon, 1982) for the one-phase Lamé-Clapeyron-Stefan problem by obtaining explicit solutions when a convective or heat flux boundary condition is imposed on the fixed face for a semi-infinite material. We also obtain the necessary and sufficient condition…
The voltage- and frequency-dependent material properties of (Ba,Sr)TiO3 (BST) thin film have been extracted up to 67 GHz by means of a lumped elements equivalent circuit validated by fitting on de-embedded experimental data. The tunability is 73% (0-10 V bias), and the loss tangent is better than 0.06 (value at 0 V at…
The surface of the nickel‐based superalloy GH4169 was subjected to high‐current pulsed electron beam (HCPEB) treatment. The microstructural morphologies of the material were analysed by means of optical microscope (OP), scanning electron microscope (SEM), and transmission electron microscope (TEM). The results reveal…
The aim is to analyse the neutron spectrum influence in a hybrid system ADS-fission inducing transuranics (TRUs) transmutation. A simple model consisting of an Accelerator-Driven Subcritical (ADS) system containing spallation target, moderator or coolant, and spheres of actinides, “fuel,” at different locations in the…
Un radiofármaco es un compuesto radiactivo utilizado para el diagnóstico y tratamiento de enfermedades. En Argentina, el 95% de los radiofármacos utilizados en medicina nuclear son de diagnóstico mientras que aproximadamente un 5% de usan para terapia. Cuando son utilizados con un propósito diagnóstico, se aprovecha l…
Peptide-based therapeutics have received increasing attention in medical research. However, the local delivery of such therapeutics poses unique challenges. Self-assembling peptides that use decorated nanofibers are one approach by which these therapeutics may be delivered. We previously found that the self-assembling…
We have evaluated the feasibility of layer-by-layer encapsulation technology for the improvement of dye pigments used for tattoos or permanent make-up. The formation of core-shell structures is possible by coating pigments with thin films of several different polyelectrolytes using this technology. The physicochemical…
Without well balanced electric conductivity and transmission of electrolyte in structures, amorphous carbons suffer from their declined electrochemical performances at increasing charge-discharge rates or current densities. A metamorphic differentiation of amorphous carbons has been carried out by annealing activated…
Among various kinds of shape memory alloys, an Fe-based alloy indicates excellent formability, machinability and weldability. Additionally, its production cost is lower than other alloys. Therefore, it is attempted that the alloy be applied to structural members such as joints for pipelines, splice plates for railways…