Materials Literature
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Thin films of Lead sulphide (PbS) were grown on soda lime glass substrate by Successive Ionic Layer Adsorption and Reaction (SILAR) method using lead acetate, lead chloride, lead nitrate, and lead sulphate as cationic precursors and thioacetamide as sulphur source. The experiments were carried out at room temperature…
Abstract Oxygen incorporation into infinite-layer structure compounds SrFeO2 and CaFeO2 has been investigated by thermogravimetry analysis. Oxygen begins to be incorporated into SrFeO2 at low temperatures like 100 °C, and the incorporation-reaction rate in SrFeO2 is much larger than that in CaFeO2. A larger structural…
The 4-nitro phenol is an organic NLO material. The commercially available 4-nitrophenol was recrystallized in acetone two times to purify the materials. The single crystal of pure 4-nitro phenol (4-NP) compound was grown by slow evaporation and slow cooling techniques using acetone as a solvent. The grown crystals wer…
Non-stoichiometric silicon nitride films with photoluminescence (PL) properties were synthesized by reactive sputtering from a silicon target. The compositions were obtained quantitatively by Rutherford backscattering spectroscopy (RBS). Thermal annealing was performed to activate the emission centres. The excitation…
Orbital localization of occupied and virtual Hartree-Fock orbitals generated from basis sets augmented with diffuse functions is performed using the Pipek-Mezey, Boys, powers of the second central moment, and powers of the fourth central moment localizations. The locality of the obtained orbital sets are presented in…
Recent anelastic and dielectric spectroscopy measurements revealed new features of the phase diagram of PbZrTiO regarding the manner in which various ferroelectric and octahedral tilt instability lines approach each other. Rather than crossing, they tend to merge, also after considerable bending, and give rise to comb…
We use a spring-and-plaquette network model to analyze the repulsion between elastic disks in contact. By studying various 2D geometries, we find that as disks approach the incompressibility limit the many-body effects become dominant and the disk-disk interaction is not pairwise additive. Upon compression, the disks…
Abstract This work reports the effect of nanogel solid particles on the surface and interfacial tension of water/air and water/styrene interfaces. Moreover, the work aimed to use nanogels as a stabilizer for miniemulsion aqueous polymerization. A series of amphiphilic crosslinked N ‐isopropylacrylamide ( NIPAm ) and 2…
Designers of electronic devices and telecommunications equipment have used different methods (e.g., three-dimensional chip architecture, comprised of a vertically integrated stack of chips) to increase the number of transistors on integrated circuits. These latest chips generate excessive amounts of heat and thus can…
We derive an exact expression for the time-averaged electromagnetic (EM) energy inside a chiral dispersive sphere irradiated by a plane wave. The dispersion relations correspond to a chiral metamaterial consisting of uncoupled single-resonance helical resonators. Using a field decomposition scheme and a general expres…
Understanding the industrial reactors behavior is a difficult task in the case of solid state reactions such as solid-gas reactions. Indeed the solid phase is a granular medium through which circulate gaseous reactants and products. The properties of such a medium are modified in space and time due to reactions occurr…
The reactivation of CoNiAl calcined hydrotalcite-like compounds for the hydrolysis of carbonyl sulfide was studied. The catalytic activity could be recovered after immersing Na 2 CO 3 and calcining catalyst under air flow at 350 °C. The fresh, deactivated, and reactivated catalysts were characterized by various techni…
Rheological and small-angle X-ray scattering (SAXS) measurements were conducted on a symmetric, low molar mass ( M n = 17.6 kg/mol), poly( tert -butylstyrene- block -methyl methacrylate) (PtBS-PMMA) diblock copolymer near the order–disorder transition temperature ( T ODT = 193 ± 1 °C). Evidence of composition fluctuat…
We study crossed Andreev reflection (CAR) of electrons or holes in normal metal--superconductor--normal metal (NSN) junctions and highlight some very strong effects of the underlying lattice. In particular, we demonstrate that for sharp interfaces and under certain, albeit generic, symmetry conditions, the CAR probabi…
This paper reports on the architectural growth of CaTiO 3 microstructures with regular geometrical morphologies and tunable dimensions under simple solvothermal conditions by using a mixture of ethanol and water as solvent, calcium nitrate and tetrabutyltitanate as starting materials, and NaOH as mineralizer. The micr…
Partial Mn atoms have been confirmed to enter the CuO lattice and form the Cu1−xMnxO compounds in the case of doping with 0≤x≤0.2 by the sol–gel method. With increasing Mn content, magnetism is observed. The magnetic critical transition temperature increases with enhanced magnetism, which obeys the bound magnetic pola…
In the manufacturing of micro/nanocomposite materials, micro/nanoparticles need to be dispersed evenly into the base materials. However, due to their high surface-to-volume ratio and high surface energy, the micro/nanoparticles tend to agglomerate and cluster together. Ultrasonic cavitation is effective to disperse mi…
Abstract Hydrophilic mesoporous carbons with an Ia3d mesostructure were successfully synthesized by a combined hydrothermal treatment and nanocasting strategy. The resultant carbon products were found to possess intrinsic peroxidase-like activity, and this catalytic activity could be further enhanced by the introducti…
The knowledge of the intrinsic absorption intensity of each carbon nanotube is of crucial importance for the optical assignment of nanotube species and the estimation of their abundance in a sample. Based on a microscopic approach, we calculate excitonic absorption spectra for a variety of semiconducting and metallic…
We consider a nematic liquid crystal, in coexistence with its isotropic phase, in contact with a substrate patterned with rectangular grooves. In such a system the nematic phase may fill the grooves without the occurrence of complete wetting. There may exist multiple (meta)stable filled states, each characterized by t…