Materials Literature
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The magnetic properties of gamma-Fe2O3 nanoparticles embedded in a thermoplastic elastomer poly(ether-ester) copolymer by the in situ polycondensation reaction process have been investigated by means of magnetization and ferromagnetic resonance (FMR) measurements at low filler concentrations of 0.1 and 0.3 wt% with th…
Within European countries, Denmark was been at the forefront of replacing the transmission lines with cables. The project was supplying the power to the greater Copenhagen area in early 1990s. Recently, the Danish TSO Energinet.dk has initiated a research project for analyzing the HV underground cable in transmission…
The absorption spectrum of Cs 2 ZnI 4 thin films in the energy range 3–6 eV at temperatures from 90 to 340 K has been investigated. It is established that this compound belongs to direct-gap insulators. Low-frequency exciton excitations are localized in ZnI 4 structural elements of the lattice. Phase transitions at 28…
The integration of vertical natural capacitors (VNCap) into existing backend-of-line (BEOL) stacks is an important aspect to enable radio-frequency and mixed signal features without extra mask costs. From manufacturing and reliability point of view these devices can be rather challenging since they may contain million…
A carbon-nanotube-atom fixed and activated scheme of non-equilibrium molecular dynamics simulations is put forward to extract the thermal conductivity of carbon nanotubes (CNTs) embedded in solid argon. Though a 6.5% volume fraction of CNTs increases the composite thermal conductivity to about twice as much as that of…
Cupromakovickyite, ideally Cu 8 Pb 4 Ag 2 Bi 18 S 36 , is a new mineral species that occurs at the skarn deposit of Baiţa Bihor, Romania, and at the scheelite deposit Felbertal, Salzburg Province, Austria. The associated minerals are makovickyite, bismuthinite derivatives (aikinite–friedrichite range), hodrusite, kupc…
Polycyanurate‐modified montmorrilonite (PCN‐MMT) nanocomposites were synthesized by polymerization of dicyanate ester of bisphenol A in the presence of MMT dispersed by ultrasound. Techniques of IR spectroscopy, WAXD, and TEM were applied to study polymerization kinetics and structure of the nanocomposites prepared, w…
Symmetrical bi‐1,3,4‐oxadiazole derivatives, namely 5,5′‐bis(phenyl 4‐alkoxybenzoate)‐2,2′‐bi‐1,3,4‐oxadiazole (BBOXD‐n, n = 6, 10, 14, 16), were synthesised. All BBOXD‐n exhibited remarkably stable SmC phases by virtue of the high transition enthalpies of SmC–I. In addition, BBOXD‐6 and BBOXD‐10 showed an enantiotrop…
This work is a study of the thermal stability of (001)-cut Pb(Mg1/3Nb2/3)1−xTixO3 (x=0.30) single crystals before and after an electric (E)-field poling by means of dielectric permittivity, hysteresis loop, domain structure, polarization current, and x-ray diffraction. An R(RNT)-R(RNT)/T(TNT)-T(TNT)-C transition seque…
The electrochemical behaviour of two Cu-Ag alloys, namely (20wt%Cu + 80wt%Ag) and (80wt%Cu + 20wt%Ag) alloys, was studied in 0.15 M borax and 0.15 M boric acid buffer solution, pH =8.45, by means of cyclic voltammetry, potentiodynamic anodic polarization and current/ time transients techniques. SEM and XRD microanalys…
We have conducted electromigration studies of Cu interconnects with wide-to-narrow transitions and observed bimodal failure distributions. The early failure mode corresponds to a fatal void at the width transition site while the late failure mode corresponds to a fatal void at the cathode. Also, we observed that as th…
Static-spray deposition of a polyol-based sol, containing nanoparticles of NiZn ferrite, on a moderately heated glass support, has been used to generate crystalline thin films. The films exhibit superparamagnetic behavior with a blocking temperature, which decreases as the zinc content increases, due to their nanocrys…
Phase formation in the B-C-N system has been studied at pressures from 6 to 15 GPa and temperatures from 1000 to 1600°C using mixtures of carbon nitride (C 3 N 4 ) nanospheres and boron. A new ternary phase with the structure of cubic boron nitride in which some of the nitrogen and boron atoms are replaced by carbon h…
High-temperature mass-spectrometric analysis is used to study the sublimation of SrMoO4(s) at 1570–1800 K. SrMoO4(g) molecules are found to be present in the vapor. The vapor pressure of the SrMoO4(g) molecule is determined to be log p = −19980/T + 7.99. The heat of sublimation ΔH s, 0 o (SrMoO4(s)) = 480 ± 40 kJ/mol…
A blend/clay nanocomposites of 50/50 (wt%) NR/SBR was prepared via mixing the latex of a 50/50 NR/SBR blend with an aqueous clay dispersion and co‐coagulating the mixture. The structure of the nanocomposite was characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Nanocomposites containi…
The paper describes our research of microwave usage in drying the size pick-up. An analysis of three different drying processes in relation to physical-mechanical properties of sized yarn has been carried out. Under the same sizing conditions, but different drying methods, the following parameters were determined: bre…
Site-specific single polyaniline nanowires were fabricated through electrophoresis growth with acetone wetting. After growing the nanowires, the post-process of acetone wetting of the nanowires improved morphology, topology, and electrical conductivity with coagulation and substitution in polyaniline. They showed resi…
We propose and demonstrate the "defect-induced plasma process" for the fabrication of the room-temperature-operated carbon nanotube single-electron transistors (CNT-SETs) with the SiO 2 protection films on the CNT channels. After introducing of defects in the CNT channels by O 2 plasma irradiation through the SiO 2 pr…
The problem of a single acoustically driven bubble translating unsteadily in a fluid is considered. The investigation of the translation equation identifies the inverse Reynolds number as a small perturbation parameter. The objective is to obtain a closed-form, leading order solution for the translation of the bubble,…
Size-dependence of optical properties and energy relaxation in CdSe/ZnS quantum dots (QDs) were investigated by two-colour femtosecond (fs) pump-probe (400/800 nm) and picosecond time-resolved photoluminescence (ps TRPL) experiments. Pump-probe measurement results show that there are two components for the excited car…