Materials Literature
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We report the effects of Ge partial substitution for Si on local atomic and electronic structures of thermoelectric materials in binary compound cobalt monosilicides (CoSi1−xGex: 0 ≤ x ≤ 0.15). Correlations between local atomic/electronic structure and thermoelectric properties are investigated by means of X-ray absor…
Interactions in the lithium carbonate-niobium pentoxide system upon mechanochemical treatment (MChT) in air and in water are studied. The products are examined using differential thermal and X-ray diffraction analyses; IR, Raman, and electron spectroscopy; nitrogen adsorption; and electron micros-copy. Activation of t…
K. Cho and co-workers develop on page 3213 a water-free transfer method for placing chemical vapor depositiongrown graphene onto arbitrary substrates. Transferring graphene without water enables water-sensitive substrates to be used in graphene electronics. Using this method, high-performance flexible air-stable graph…
The influence of the substrate Gd2(MoO4)3 ferroic phase transition on the magnetization of ferromagnetic nickel thin film was investigated using vibrating sample magnetometer. We have compared experimental results with micromagnetic simulations.Our measurements showed strong magnetization change at Curie Point. We hav…
In this paper, the effects of precipitates and Mn-solute atoms on the recrystallization behavior of an Al-Mn alloy was studied using micro-Vickers hardness, electrical conductivity measurements and optical microscopy. Various thermo-mechanical processes were designed to investigate the different morphologies, and the…
The optical properties of an ensemble of metallic nanoparticles in an insulating matrix have been studied in terms of the classical Maxwell Garnett theory. To estimate the quantum effects, the analytical expression for the dielectric function of a metallic particle in the form of a parallelepiped has been used that wa…
Reliability testing of thermally conductive, high-temperature, high-dielectric strength materials was conducted using newly developed high-temperature thermal conductivity and high-dielectric breakdown voltage characterization instruments based on ASTM Standards. These instruments and tests were used for optimizing th…
The results of long-term isothermal tests of samples of glass-filled PA-6 at 60–150°C are presented. It has been shown that an irreversible change in its strength properties occurs at T ≥ 150°C. A detailed study of the mechanical relaxation characteristics has revealed that the mechanism of the relaxation process in t…
The interaction of underwater explosion waves with aluminum foam plates with different cell types is investigated. It is shown that the transmitted wave that passed through a closed-cell sample can be decomposed into two parts, one with a low-frequency content, which corresponds to the gas pressure in the pores, and o…
Detection of DNA sequences is pivotal to many modern molecular diagnostic methods, but the ability to directly detect DNA sequences, without the need for signal amplification (such as by applying a polymerase chain reactions) is highly desirable. Here we investigate the potential for gold inverted pyramidal structures…
An incrementally coupled mechanical-ultrasonic finite element model is developed to model the thermosonic Cu wire bonding process on Cu/low-k chips, in order to study the influences of key process and design parameters on the stress conditions in the chips. The model takes into account of both mechanical oscillation e…
The thermal and microstructural properties of five copper-gallium-tin alloys (Cu-Ga-Sn) and two important intermetallic compounds Cu3Sn and CuGa2 have been investigated by dilatometry, scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDX) and X-ray diffraction. The temperature dep…
For 2.5D and 3D IC packaging, wafer back side processing often has temperature limits substantially lower than curing temperature of conventional polyimide (PI). New low temperature curable insulation materials possess very different properties and require thorough evaluation to ensure process compatibility and produc…
Silicon carbonitride films are synthesized by plasma enhanced chemical vapor deposition from bis(trimethylsilyl)ethylamine and helium or ammonium mixtures. The structure of chemical bonds in the films is studied by X-ray photoelectron and IR spectroscopy. The data on the main types of bonds present in silicon carbonit…
Application of Low Temperature Co-Fired Ceramic (LTCC) technology is widely spread. Its presence is well established in component packaging, sensor applications, high frequency applications [1, 2], chemical reactors and bio-medical applications [3]. For successful realization and implementation of LTCC structures, cha…
Structural characteristics, vibrational frequencies, and energies of isomers of compounds of CO and CO 2 molecules with the centered aluminum cluster Al 13 and its doped analogues Al 12 M (M = Ti and Ni) have been calculated by the density functional theory method. For the Al 12 MCO compounds, the most favor-able are…
New carboxylate platinum(II) complexes: syn and anti isomers of Pt(phen)(OOCMe) 2 molecular complex, [Pt(phen)(NCMe) 2 ](O 3 SCF 3 ) 2 , as well as unusual sandwich complex [Pt(phen) 2 ] 2+ · 2 syn -[Pt(phen)(OOCMe) 2 ] where [Pt(phen) 2 ] 2+ cation is inserted between two syn -Pt(phen)(OOCMe) 2 molecules were synthes…
The convection pattern and the evolution of mushy zone, temperature and solidification structure are measured during solidification of NH4Cl-70%H2O solution in a water-cooled copper mold with transparent sidewalls. The natural convection and crystal sedimentation are measured via Particle Image Velocimetry (PIV) techn…
Co64Fe4Si14.5B14.5amorphous ribbon was fabricated by the melt-spinning technique. Soft magnetic properties of the ribbon were improved by annealing at 623K for 1 hour with a zero magnetic field, a 50mT longitudinal or transverse external magnetic field comparing with the as-quenched ribbon. The longitudinally driven g…
Simultaneous Thermal Analysis (STA) unifies the application of thermogravimetry (TGA) and differential scanning calorimetry (DSC) to one and the same sample in a single instrument, under perfectly identical conditions. The results obtained by STA were used in a new way, to reveal the influence of plasma-aided flame re…