Materials Literature
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Abstract Two‐dimensional (2D) materials and ultrathin nanosheets are advantageous for elevating the catalysis performance and elucidating the catalysis mechanism of heterogeneous catalysts, but they are mostly restricted to inorganic or organic materials based on covalent bonds. We report an electrochemical/chemical e…
Abstract In this paper, we first give a quick review of the current status of the invisibility cloak with metamaterials. Then we focus on the carpet cloak model and establish an elegant stability different from our previous work. A similar discrete stability is also proved for a new FETD scheme. Then we prove the opti…
Lead-free (Na0.5Bi0.5)1-xSrxTiO3 ceramics (x = 0–0.04) were synthesized by a conventional mixed-oxide technique. The microstructure study showed a dense structure, in good agreement with that of above 96% relative density determined by Archimedes method. X-ray diffraction measurements showed that the obtained specimen…
Ca0.1Sr0.9LaxBi2-xTa2O9 ceramics were synthesized through solid state double sintering route. Impedance, resonance and anti-resonance studies under clamped state were carried out on the prepared ceramics. The activation energy for relaxation is within the range 0.850–1.230 eV depending up on composition x. Equivalent…
A novel visible-light photochromic inorganic-organic multilayer was constructed based on phosphomolybdic acid (PMoA) and polyvinyl alcohol (PVA) which was prepared using the layer-by-layer (LbL) assembly technique to form the multilayer film. The structures of the multilayer films were characterized via Fourier transf…
The photoluminescence properties of CaTiO3 phosphor powders co-doped with Eu3+ and Mg2+, were prepared by the solid-state reaction method. The powders were characterized by X-ray diffraction, Raman scattering, and photoluminescence spectroscopy. The Crystalline phase and vibrational modes of the phosphors were studied…
We synthesized a series of plant-based and renewable, eugenol-modified polystyrene (PEUG#) (# = 20, 40, 60, 80, and 100, in which # is the molar content of the eugenol moiety in the side group). Eugenol is extracted from clove oil. We used polymer modification reactions to determine the liquid crystal (LC) orientation…
A series of rare earth element (REE) mixed‐anion 5,5′‐azobis(1 H ‐tetrazol‐1‐ide)‐carbonate ([REE 2 (ZT) 2 CO 3 (H 2 O) 10 ] · 2H 2 O; REE = lanthanides plus yttrium) coordination compounds were synthesized, characterized, and analyzed. Syntheses by simple metathesis reactions under a CO 2 atmosphere were carried out…
Anisotropic chemical wave propagation of self-oscillating Belousov–Zhabotinsky (BZ) reaction was demonstrated in the poly( N -isopropylacrylamide) gel films embedded with macroscopically aligned liquid crystalline inorganic nanosheets. Although the average propagation rate of chemical wave v̅ was 3.56 mm min –1 in the…
Ferroelectric ceramic Sr0.8Na0.1Nd0.1Bi4Ti4O15 (SNNBT) is prepared by solid state reaction method. Single phase formation with orthorhombic structure is confirmed by X- Ray diffraction analysis. Scanning electron micrograph of the ceramic shows the plate like grains of different sizes. Dielectric properties and phase…
Methyl Malonic acid (MM) forms hydrogen bonds with octyloxy benzoic acid (8OBA), nonyloxy benzoic acid (9OBA), decyloxy benzoic acid (10OBA) labeled as MM+8OBA, MM+9OBA, and MM+10OBA respectively, all three mesogens exhibit mesogenic properties. Nine binary mixtures are prepared with MM+8OBA and MM+9OBA by varying the…
Abstract A new class of coil–rod–coil molecules with an azobenzene core was synthesized. They were found to form robust organogels in several organic solvents. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscopy (AFM), FTIR spectroscopy, UV/Vis absorption spectroscopy, 1…
Approximate glass-forming region of a P2O5–ZnO–Na2O (PZN) ternary system was investigated and determined. The properties of the glasses with ZnO contents between 35 and 50 mol-% were further investigated. When ZnO of 40P2O5–40ZnO–20Na2O glasses is replaced by 1–5 mol-% Fe2O3, respectively, the density, Tg and Tf incre…
The consumption of a specifically prepared silk fibroin protein enzymatic hydrolysate (FPEH) has been reported to improve cognitive function in healthy humans. The objective of the current study is to evaluate the dose-dependent effects of the FPEH on memory. Healthy adults with an average age of approximately 55 year…
The anodic oxidation process is an established means for the improvement of the wear and corrosion resistance of high-strength aluminum alloys. For high-strength aluminum-copper alloys of the 2000 series, both the current efficiency of the anodic oxidation process and the hardness of the oxide coatings are significant…
In view of the importance of rare – earth modified PZT, Gd-modified lead zirconate titanate (PGZT) ceramics with a general chemical formula Pb1-xGdx(Zr0.35Ti0.65)1-x/4O3 (x = 0, 0.07,0.10,0.12) near morphotropic phase boundary (MPB) have been prepared using high-temperature solid-state reaction route. The X-ray diffra…
nanoparticles. For this purpose, the magnetite nanohydrogels (MNHGs) were loaded with doxorubicin hydrochloride (DOX) as a universal anticancer drug. The morphologies and magnetic properties of the DOX-loaded MNHGs were investigated using transmission electron microscopy (TEM) and vibrating-sample magnetometer (VSM),…
Long-term static leaching experiments were conducted to investigate characteristics of magnesium phosphate cement (MPC) solidified/stabilized Zn-contaminated soil under impact of acid rain. Effects of initial pH values of acid rain, binder agent types and compositions, as well as curing age on strength and leaching ch…
The effects of octakis[(3-glycidoxypropyl)dimethylsiloxy]octasilsesquioxane (GPOSS) on the crystallinity, crystal structure, morphology, and mechanical properties of polyoxymethylene (POM) and POM/GPOSS composites were investigated. The POM/GPOSS composites with varying concentrations of GPOSS nanoparticles (0.05⁻0.25…
Abstract Water-based drilling fluids are an economical and environmentally appealing option for wellbore construction. Both conventional and high-performance varieties of water-based systems typically use biopolymers to provide viscosity, suspend solids, and control fluid loss in the wellbore. Some examples include bo…