Materials Literature
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We fabricated a carbon nanotube (CNT) via structure on a 300-mm wafer. We investigated the CNT chemical-mechanical polishing (CNT-CMP) behavior in an actual via pattern structure and clarified the technical issues of the CNT-CMP process. We developed a fabrication process of CNT via structures using selective CNT grow…
A simple compact device for prompt evaluation of the maximum electron energy has been developed. ЦВИД-01-1 and ЦВИД-3 color film indicators were used as detectors of electrons. The results of ARSA accelerator experiments were compared to those obtained using a semicircular magnetic spectrometer. The difference in the…
Using methods of X-ray fluorescence analysis (XRFA), the Rutherford backscattering of ions (RBS) and spectral X-ray microanalysis (SXRM) in combination with scanning electron microscopy (SEM), we study the elemental composition and structure of contaminants on the surface of a metallic panel with samples of different…
Organic-inorganic hybrid methyl ammonium lead halide perovskites have large absorption coefficient and high carrier mobility, which lead to their applications in photovoltaic devices. Recently, solar cells based on perovskite absorber have achieved the record solar-to-electrical power conversion efficiency as high as…
Slow strain rate tension tests were carried out in order to investigate effect on new corrosion inhibitor to stress corrosion cracking of prestressed steel wire in simulated concrete pore solution. Indeed, the results suggest that C4H13N3 can form adsorption film on the metal surface, prevent chloride ion erosion. Mea…
In this paper, a novel erase method combining Fowler-Nordheim (FN) and two-sided band to band hot hole (BBHH) erase schemes is proposed and applied in a Silicon-oxide-Nitride-Oxide-Nitride (SONOS) device with 4.5 nm thick bottom oxide, which can hardly be erased by FN tunneling. Results show that the new erase mechani…
In the present work alkaline iron oxide nanoparticles are synthesized by a novel solvo thermal approach and characterized exhaustively by various complementary techniques. Field emission scanning electron microscopy (FESEM) studies reveal that the size of nanoparticles is in the range of 31.5 nm to 96.9 nm. Energy-dis…
Tensile strength of some natural fibers such as hemp is higher than that of steel. To determine tensile properties of hemp fiber, a fiber or bundle is tensile tested with universal testing machine that is controlled by personal computer. This paper presents a small tensile testing equipment that is controlled by Raspb…
The Raman scattering spectroscopy method is used to study the interaction of phonons and free charge carriers in doped semiconductor nanostructures (superlattices). In doped superlattices based on polar semiconductors, the collective vibrational modes of free charge carriers (plasmons) shield the long-range Coulomb in…
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…