Materials Literature
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In this part of the review, the currently implemented elementary quantum algorithms are considered and prospects of the development of the full-scale quantum computer based on NV centers in diamond are discussed. The NV-hybrid systems, which can operate as the communication elements between remote NV qubits, are analy…
Resistance standards with values in the TΩ range play an important role in electrical instrumentation. The calibration of such standards is, thus, a service offered by many metrology institutes. The techniques used to measure very high resistance values differ quite substantially from the calibration techniques applie…
Porous silicon is generally achieved through electro-chemical etching or chemical etching of bulk silicon in hydrofluoric acid based solutions. The work presented here explores the effect of a chemical etching process on a metallurgical grade silicon powder. It is found that the metallurgical grade silicon particles c…
This work deals with the application of [MERCSF-N] computer program in calculating the macroscopic effective removal cross-section of fast neutrons, ΣR (cm－1), for two different boro phosphate glass systems: (0.5 - x) CdO-x Fe2O3-0.4 P2O5-0.1 B2O3 and (0.5 - x) B2O3-x Fe2O3-0.1 CdO-0.4 P2O5 (with 0.05 ≤ x ≤ 0.5 by mol…
Monodispersed chiral mesoporous spheres of nanometer size with high specific area and good thermal stability were synthesized using the chiral anionic surfactant (N-palmitoyl-L-phenylalanine) as a template according to the co-structure directing agent (CSDA) method. The resulting mesoporous nanospheres were characteri…
In our work, graphene oxide (GO) was covalently functionalized with propargyl alcohol to obtain alkyne terminated graphene oxide. These alkyne groups on graphene oxide sheets further reacted with a kind of azido-functionalized liquid crystalline polymer via click chemistry, which was found to be a facile and effective…
The polyamine dendrimer-encapsulated Cu complexes are capable of regioselectively catalyzing the oxidative coupling reaction of 2,6-dimethylphenol to tetramethyldiphenoquinone in high yield. The polyamine dendrimer nanovoids encapsulate Cu ions in such a manner that adjacent Cu centers are able to serve as active spec…
Two lanthanide-containing peroxoisopolyanions [Ln4(WO4)(H2O)16{W7O22(O2)2}4]14− (Ln = LaIII; PrIII), have been synthesized by reaction of Na2WO4 and lanthanide (Ln) ions in the presence of peroxide. These represent the first two examples of peroxo-containing Ln-stabilized polyanions (LSPs), and have the highest number…
Experimental works have been conducted the objective of which was to improve mechanical properties of boron carbide by introduction of doping elements into the system. Titanium and Zirconium were selected as doping elements, which were introduced into the system in the form of TiB2 and ZrB2. Four types of boron carbid…
YAG-Ce, Nd, and Yb phosphors with a triple-doped system are prepared by conventional solid-state reaction method. The fluorescence emission and excitation spectra are measured and analyzed. The influences of Yb 3+ doping concentration on the emission of Yb 3+ and Nd 3+ in YAG-Ce, Nd, and Yb are studied. The fluorescen…
Certain porous silicon (PS) structures have demonstrated energetic characteristics when mixed with an appropriate oxidizer [1-4]. However, limited studies on the effect of PS structure on its combustion have been performed. This work investigates how various material properties of PS films; surface area, porosity and…
The template-directed imine-bond forming reactions between chiral amidines or achiral carboxylic acids monomers bearing a formyl or an amino group at one end were remarkably accelerated 34- or 10-fold in chloroform in the presence of the corresponding optically inactive carboxylic acid dimer or optically active amidin…
Currently, the use of titanium alloys components and coating (clad) in petroleum subsea production systems continues to increase. Titanium alloys are lightweight, very flexible; have greater mechanical resistance relationship showing excellent resistance to corrosion and fatigue in ambient seawater and marine environm…
Copper oxides have received much attention because of their potential in energy-related applications such as gas-phase reactions, photoreactions, and batteries. In this study, the surfaces of cube- and octahedron-shaped Cu2O nanocrystals are transformed into thorny CuO, which have larger surface areas and better stabi…
We investigated the effect of hypervelocity impacts of micrometeoroids and small-scale orbital space debris (M/OD) on space structures by comparing numerical simulation results obtained using the AUTODYN-2D hydrocode with the results of experiments using a two- stage light gas gun. The response of an aluminum honeycom…
Herein we report a novel synthetic strategy for the synthesis of micrometre sized core–shell particles comprising a polyelectrolyte core and a porous hydrophobic shell. A water-in-oil-in-water (W1/O/W2) double-emulsion was used as the template for the simultaneous polymerisation of both the internal aqueous and the in…
High functionalization of materials by the combination of heterogeneous substances has become an important procedure for the development of high-performance materials. In various procedures for composite processes, the phase separation of glasses has a potential for use with combinations of the varieties of functional…
Coke gas treatment process requires fresh fuel oil to remove naphthalene. At the Coke plant of Annaba in Algeria, an amount of about 14.5 tons/day of fuel oil is used as washing oil. At the end of the process, the released fuel is charged at least 7% of naphthalene as impurities. This creates serious problems in the r…
Studies were carried out to determine the activity of complexes of the essential amino acids DL-Lysine and L-Methionine with heavy metals in the oxidation of cyclohexene with tert-butylhydroperoxide in toluene at 80°C. All complexes were prepared through interaction of metal ions and DL-Lysine and L-Methionine at room…
We previously reported a simple method for the preparation of size-controlled spherical silver nanoparticles (Ag NPs) generated by autoclaving a mixture of silver-containing glass powder and glucose. The particle size is regulated by the glucose concentration, with concentrations of 0.25, 1.0 and 4.0 wt% glucose provi…