Materials Literature
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Abstract The inhibition efficiencies of two new synthesized Schiff bases have been investigated for aluminium in 0.5 M HCl solution using experimental and theoretical methods. Potentiodynamic polarization and EIS method were used to determine the inhibition efficiencies. From the experimental results it has been found…
Abstract The effect of CNFs on hard and soft segments of TPU matrix was evaluated using Fourier transform infrared (FTIR) spectroscope. The dispersion and distribution of the CNFs in the TPU matrix were investigated through wide angle X‐ray diffraction (WAXD), field emission scanning electron microscope (FESEM), high…
PURPOSE: To achieve prolonged drug release for the treatment of multidrug resistant tuberculosis and to improve the patient compliance, ethionamide loaded PLGA nanoparticles were developed. MATERIAL AND METHODS: They were developed by solvent evaporation method and optimized. The optimized formulation was subjected to…
We report a growth study of MgO thin films on an Au(111) support, performed with scanning tunneling microscopy, X-ray photoelectron spectroscopy, and low-energy-electron and X-ray-diffraction techniques. Depending on the deposition temperature, the O 2 partial pressure, and the availability of water during oxide forma…
The magnetic ground states of the isostructural double perovskites Ba${}_{\text{2}}$NaOsO${}_{\text{6}}$ and Ba${}_{\text{2}}$LiOsO${}_{\text{6}}$ are investigated with muon-spin relaxation. In Ba${}_{\text{2}}$NaOsO${}_{\text{6}}$ long-range magnetic order is detected via the onset of a spontaneous muon-spin precessi…
Dendritic effects have been observed in the past for a number of metal-based catalysts, but only rarely for organocatalysts, and particularly chiral organocatalysts. In the current study, L-proline was immobilized as an ester or amide on polyether dendritic spacers attached to polystyrene. The ester-including catalyst…
Abstract The spinning of poly(ethylene terephthalate) (PET) filaments in laboratory‐scale was studied. The objective was to study the effect of modified calcium silicate (CS) with vinyltriethoxysilane (VTES) on the melt spinning of PET fibers. The CS was modified with VTES (2% v/v) in diethyl ether at room temperature…
Abstract Dicumyl peroxide (DCP) vulcanized poly(butadiene‐ co ‐acrylonitrile)‐polyaniline dodecylbenzenesulfonate [NBR‐PAni.DBSA] blends were successfully prepared by using the practical thermomechanical mixing method. The effect of alignment of PAni.DBSA particles on the mechanical and electrical properties of vulcan…
Abstract High refractive index polymer films have been extensively investigated because of their wide application potentials. We now designed thiophene‐containing polystyrene as colorless and transparent high‐refractive‐index thin film. The copolystyrenes were synthesized by general radical polymerization with control…
Graphene provides many advantages for controlling the electronic structure of adatoms and other adsorbates via gating. Using the projected density of states and charge density obtained from first-principles density-functional periodic supercell calculations, we investigate the possibility of performing ``alchemy'' of…
We present an investigation of optically active near-surface defects in sputtered Al-doped ZnO films using scanning tunneling microscope cathodoluminescence (STM-CL). STM-CL maps suggest that the optically active sites are distributed randomly across the surface and do not correlate with the granular topography. In st…
The photophysical properties are described of silicon nanoparticles protected with a shell of n -butyl chains, and with an asymmetric size distribution with a peak between 2 and 3 nm, and a tail extending up to 7 nm. The excited nanoparticles decay via multiexponential luminescence on a time scale of a few nanoseconds…
Abstract The corrosion resistance of Ti–Mo (5, 10, 15 and 25 wt% molybdenum) alloys in 5–25% sulphuric acid was evaluated. The Ti–Mo alloys offered a better corrosion resistance than commercially pure titanium (CP‐Ti). The higher impedance values, higher phase angle maximum, ability to reach the phase angle maximum at…
H applied magnetic field β dependence of TC in volume λ mean-field exchange parameter K compressibility M magnetization α1 thermal expansion σ reduced magnetization T0 ordering temperature (no volume coupling) T temperature v volume χ magnetic susceptibility v0 volume (no magnetic interaction) N number of spins G Gibb…
A systematic study has been conducted to investigate the polymer matrix properties resulting from the introduction of TiO 2 nanotubes (1–5% by weight) that had been surface-modified with phenyl dichlorophosphate (PDCP), into an epoxy resin. The thermal, mechanical, and combustion properties of the nanocomposites and t…
Ordered vertical silicon nanocones arrays coated with silver nanoparticles (AgNPs@SiNCs) are developed as surface-enhanced Raman scattering (SERS)-active substrate, which features good uniformity and reliable reproducibility of SERS signals. Label-free DNA at low concentrations (10−8 M) could be quantitatively analyze…
Powdered nanocomposite materials composed of SBA-15 mesoporous silica and different types of Au nanoparticles within the mesoporous channel pores (Au/SBA-15) are shown to serve as robust and efficient substrates for surface-enhanced Raman spectroscopy (SERS). Using the Au/SBA-15 samples as SERS substrates and 4-mercap…
Diiminic Schiff bases (DSBs) with a variety of spacers in between the two imine bonds have been prepared from salicylaldehyde and different diamines. Gold and silver nanoparticles (NPs) are photoproduced as stable hydrosol from the respective metal salts in the presence of alkaline DSBs. In solution, the capping capab…
Nowadays, consumers demand for fresh, high‐quality seafood products continues to climb, especially in affluent, developed nations. At the same time, there is increasing attention regarding improved utilization of seafood for human consumption; Atlantic salmon is the main species in Chile aquaculture, and most of the s…
ZnO nanowires were investigated at high pressures of up to 27 GPa in situ in a diamond anvil cell using synchrotron X-ray diffraction. Upon compression, a wurtzite-to-rocksalt phase transformation was observed, but both the onset and the completion pressures of this transformation were enhanced compared with all previ…