Materials Literature
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In this letter, we designed and experimentally demonstrated a compact mode converter in silicon-on-insulator (SOI) waveguide based on conformal dielectric metasurface, which uses polygonal slot structure to manipulate the wavefront of guided modes. Mode conversion from TE0to TE2mode can be realized within an ultracomp…
The influence of the mass concentration of Ag on properties of Cu-Ni alloys is investigated. The effect of silver addition on the structure and properties of Cu-2Ni-1Si alloys is determined. The scientific aim of this research is to determine how the addition of silver affects the mechanisms of strengthening silver-mo…
Abstract We demonstrate the tunability of the intensity and directionality of scattered light in a soft colloidal dielectric metamaterial. The system consists of high-refractive-index sub-micrometer-sized particles dispersed homogeneously in a nematic liquid crystal. The refractive index modulation of the nematic liqu…
Abstract This study reports the complex impedance and alternative current conductivity of polymer‐derived ceramic SiC (PDC‐SiC) annealed at ultrahigh temperatures. The PDC‐SiC shows an inductive response when annealed at temperatures of 1700°C‐1900°C due to the percolation of turbostratic carbon. The material returns…
Gadolinium is a commonly used contrast agent for magnetic resonance imaging (MRI). The goal of this work was to determine how MRI contrast agents affect radiosensitivity for tumour cells. Using a 225kVp X-ray cabinet source, immunofluorescence and clonogenic assays were performed on six cancer cell lines: lung (H460),…
In the search for new f–d luminescent complexes of Eu(II) and Yb(II) the metathesis reactions of diiodides of these metals with perfluorinated 2-mercaptobenzothiazolates of alkali metals were studied. It has been found that the reactions of LnI 2 (THF) 2 (Ln = Eu, Yb) with K(mbt F ) (mbt F = perfluorinated 2-mercaptob…
A series of Co3O4 catalysts with different contents of residual sodium were prepared using a precipitation method with sodium carbonate as a precipitant and tested for the catalytic oxidation of 1000 ppm propane and toluene at a weight hourly space velocity of 40,000 mL g−1 h−1, respectively. Several techniques were u…
Macroions, as soluble ions with a size on the nanometer scale, show unique solution behavior different from those of simple ions and large colloidal suspensions. In macroionic solutions, the counterions are known to be important and well-explored. However, the role of co-ions (ions carrying the same type of charge as…
Abstract In this study, density functional theory (DFT) and experimental study were conducted to investigate the photodegradation of PVC composites. The results indicate that chain crosslinking, chain scission, dehydrochlorination, and photooxidation are suppressed, while the tensile strength retention of PVC composit…
Crystalline La 6– x MoO 12−δ materials with different lanthanum/molybdenum ratios (0.6 ≤ x ≤ 3.0) have been prepared via a freeze-drying precursor route. The influence of the lanthanum content, sintering temperature, and cooling rate on the phase existence range and polymorphism was evaluated. Lanthanum-rich compounds…
This research presented the surface oxidation of stainless steel grade 304 (S304) welded by a gas tungsten arc welding (GTAW) process. The welded S304 was inspected by visual and penetrant testing methods. The surface of the welded specimen was oxidized by the chromic solution to an obtained oxide film on S304 welded…
In this research, jute fiber reinforced polypropylene and poly (lactic acid) composites were fabricated, respectively by Direct Fiber Feeding Injection molding (DFFIM) process. Jute spun yarns were directly fed into the barrel of molding process in order to eliminate the fiber breakage during extrusion compounding pro…
Barkhausen noise (BHN) is a technique that can be used to evaluate properties of ferromagnetic materials; case depth, coating depth, residual stress, grinding burnt damage, and hardness of a metallic material. The commercial BHN measuring devices commonly used are relatively expensive. Therefore, the steel industries…
The effect of Cephalexin monohydrate drug on the corrosion performance of low carbon steel (LCS) in 1 M HCl solution has been examined by weight reduction (WR), potentiodynamic polarization (PP) and AC impedance spectroscopy (EIS) tests. The inhibition efficiency (IE) raised with increasing the cephalexin monohydrate…
Chemical reactions that exhibit self-sustained oscillations show great promise for designing multifunctional materials for biomimetic applications. Belousov–Zhabotinsky (BZ) reactions are dynamical systems that operate far from equilibrium and thus serve as model systems for such applications. Catalyzed by a metal ion…
Representative pathogenic bacteria such as Escherichia coli ( E. coli) and Staphylococcus aureus ( S. aureus) are widespread in nature and pose a threat to human health. To control the propagation of these pathogens from the source, the key is to design broad-spectrum antibacterial materials to reduce the serious dama…
Reverse spherification is a common technique used in molecular gastronomy to produce innovative products with an improved texture by shaping a liquid into an edible semisolid sphere that gives a burst in the mouth sensation. In this study, liquid-core hydrogel beads (LHBs) were prepared using Syzygium caryophyllatum f…
Production of particles and their adaptation in the pharmacology became an object of interest, and they are the currently introduced therapies based on the use of micro and nanoparticles. The use of gold particles is not an exception. This review has focused on the application of gold micro and nanoparticles in pharma…
Polymer brushes are widely used to modify the physico-chemical properties of surfaces. By introducing chains with adsorption-active end groups to a brush, the properties of a surface can be altered by external stimuli, enabling the functionalized ends to be switched between the exposed and the adsorbed, hidden state.…
Abstract The enhancement of triplet–triplet annihilation upconversion (TTA-UC) processes is of profound significance to address key bottleneck problem associated with the practical applications of TTA-UC. In this work, optimized multibandgaps photonic crystal (PC) structures were introduced to dramatically amplify the…