Materials Literature
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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…
The template method (surfactant: Pluronic 123) has been applied to produce mesoporous silica that contain ammonium groups [≡Si(CH 2 ) 3 NH 3 ] + , [≡Si(CH 2 ) 3 NH 2 (CH 2 ) 2 NH 3 ] 2+ , [≡Si(CH 2 ) 3 NH 2 (CH 2 ) 2 NH 2 (CH 2 ) 2 NH 3 ] 3+ and [≡Si(CH 2 ) 3 N(CH 3 ) 3 ] + in the surface layer, which has been confirm…
High Temperature Gas-cooled Reactor is one of the candidates for the next generation advanced nuclear energy systems. As high temperature gas cooled reactor neutron moderator, reflector and structural material, nuclear graphite is very important in the nuclear industry to assure the safe operation of the reactor. The…
Reinforced Plastics reports on a new method of reducing the density of SMC mouldings for automotive applications developed by DSM using a high performance low profile additive and surface modified hollow glass spheres.
It is well known that low-velocity detonation excited by the explosion of a thin layer of a plastic explosive within charges of grained pyroxylin powder is propagated with a velocity that is practically constant along the charge. However, it varies depending on the power of the initiating pulse. The present paper is d…
The series of V-doped glasses with Li2O-2B2O3(Li2B4O7), 1/2(Li2O-K2O-4B2O3), (LiKB4O7), CaO-2B2O3(CaB4O7) and 1/2(Li2O-2CaO-B2O3) (LiCaBO3) composition containing 0.5 and 1.0 mol. % V2O5oxide were obtained by standard glass technology. The electron paramagnetic resonance (EPR) and optical absorption spectra of the obt…
To study the structural and electronic properties of III-As (III:Ga, In) binary semiconductors, the total minimum energy of zinc blend GaAs and InAs cubic structure are calculated using local density approximation (LDA) with norm-conserving pseudopotential and the projector augmentation wave (PAW) pseudopotential to t…
Amorphous indium-titanium-zinc-oxide (ITZO) thin-film transistors (TFTs) with various channel thicknesses were fabricated at room temperature by using pulsed laser deposition. The channel layer thickness (CLT) dependence of the TFTs was investigated. All the ITZO thin films were amorphous, and the surface roughnesses…
We report the nonlinear optical localization in an embedded waveguide array fabricated in chalcogenide glass. The array, which consists of seven waveguides with circularly symmetric cross sections, is realized by ultrafast laser writing. Light propagation in the chalcogenide waveguide array is studied with near infrar…
It is shown that the integral-equation theory may be used to study the phase behavior of a diblock copolymer in an ionic liquid with allowance made for the solvent structure. Features of microphase separation are exemplified via calculation of the mean-field spinodal temperature and order-disorder transition temperatu…
The plasma surface activation was applied to the thermal-compression bonding of chips and substrates. An Ar gas was selected to perform the physical plasma treatment on the bonding surface of Au bumps and Cu electrodes. This plasma-activated technology was expected to remove the surface contaminants, and then to reduc…
A large amount of dust can be produced in iron and steel making process. This paper analysis the chemical composition, particle size distribution and microscopic characteristics of those iron and steel making dust. Some dust with high iron content, some dust with much CaO and some dust with carbon, those indicate that…
The self-consistency schemes previously developed in J. Struct. Chem. , 30 , N 5, p. 3 (1986) are shown to belong to the class of semi-canonical orbital schemes. In the derivation they explicitly involve only a part of canonical Koopmans orbitals in the iteration process. In particular, within the restricted Hartree-F…
Carbon nanotubes with excellent mechanical properties can be utilised as nanoscale reinforcement to carry loads in composite structures. External loads are transferred to carbon nanotubes via the surrounding matrix, through the interfacial shear stress. In this work, the interaction and stress transfer in double-walle…
High‐purity (99.9+%) nanosize Cr 2 O 3 was produced from chromite concentrates. Sodium dichromate was produced from an alkaline melt of chromite ore and then nanosize Cr 2 O 3 was obtained by reaction between sodium dichromate and sulphur. Nanooxides were investigated by scanning electron microscopy, transmission elec…