Materials Literature
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This paper presents the results of an experimental investigation to determine the effects of cryogenic coolant on surface integrity in orthogonal machining of hardened AISI 52100 bearing steel. Experiments were performed under dry and cryogenic conditions using chamfered CBN tool inserts. Several experimental techniqu…
The catalytic activity of Pt/CNT for benzyl alcohol aerobic oxidation was remarkably improved by decorating iron oxide on Pt nanoparticles, and electrochemical measurements evidenced the enhanced activation of oxygen and benzyl alcohol at the FeO(x)/Pt interface.
A surface-enhanced Raman scattering (SERS)-based sensor for the determination of theophylline (THO) has been developed by imprinting the target molecules on the surface of silver nanoparticles. The desired recognition sites are generated after template removal and homogeneous distribution on the silver nanoparticles t…
The switching properties of the spin-transition solid [FeIII(3-MeO-SalEen)2]PF6 (H-3-MeO-SalEen resulting from the condensation of 3-methoxy-substituted salicylaldehyde and N-ethylethylenediamine), exhibiting a first-order transition, were investigated by using temperature and light as stimulation. The structural anal…
The oxygen incorporation/extraction kinetics of the potential solid oxide fuel cell (SOFC) cathode material Bi(1-x)Sr(x)FeO(3-δ) with x = 0.5 and 0.8 was studied by electrochemical impedance spectroscopy on geometrically well-defined pore-free thin film electrodes. The oxygen exchange rate was found to be higher than…
Using first principles calculations for O vacancy diffusion on CeO(2)(111), we locate a surface diffusion mechanism, the two-step O vacancy exchange one, which is more favored than the most common hopping mechanism. By analyzing the results, we identify quantitatively the physical origin of why the two-step exchange m…
Mn2+-doped phosphates Na2CaMg1−xMnx(PO4)2 (x = 0.05–1.0) were prepared by conventional solid-state reaction. X-ray powder diffraction (XRD), the emission and excitation spectra, and decay measurements were employed to characterize the synthesized phosphors. The XRD patterns show that Na2CaMg1−xMnx(PO4)2 (x = 0.05–0.3)…
Nanofibres having a parallel line surface texture were electrospun from cellulose acetate butyrate solutions using a solvent mixture of acetone and N,N′-dimethylacetamide. The formation mechanism of the unusual surface feature was explored and attributed to the formation of voids on the jet surface at the early stage…
ABSTRACT: In the present research program, polymer nanocomposites have been used as the drug carrier for delivery systems of anticancer drug. Chitosan (CS) and sodium alginate (ALG) with different ratios were blended with different wt % of Cloisite 30B solution by solvent evaporation method. Cloisite 30B was incorpora…
Double-digit relaxation of the elastic modulus and a previously unknown plateau are observed in a new class of slide-ring gels. Detailed consideration of the assignment of the two observed plateaus and the relaxation dynamics reveals that the relaxation is attributable to the sliding dynamics of partial chains through…
With the introduction of mannite, hollow flower-like complex superstructures assembled by ZnO nanorods have been successfully constructed via a simple hydrothermal method. The results reveal that the mannite-directed hydrothermal process is essential for the final products. The morphologies of the ZnO products could b…
Sequential thiol–ene and thiol–yne click chemistry via the A2 + CB2 protocol is presented for simple, rapid, and scalable production of hyperbranched polymers, affording hyperbranched polythioether–ynes with high molecular weight and high degree of branching.
Nucleation is an important stage in the growth of crystals. During this stage, the structure and orientation of a crystal are determined. However, short time- and length-scales make nucleation poorly understood. Micrometer-sized colloidal particles form an ideal model system to study nucleation due to more experimenta…
Macroporous magnetic poly(styrene–divinylbenzene) [P(St–DVB)] nanocomposites with an open-cell structure have been synthesized through high internal phase emulsion (HIPE) templates solely stabilized by surface-modified magnetite nanoparticles (MPs). When the particle concentration was below 20% based on monomers, the…
β-CD conjugated magnetic nanoparticles that serve as a hemoadsorbent for diazepam removal are fabricated. The diazepam is arrested by the conjugated β-CD and then the adsorbed diazepam is efficiently removed by an external magnetic field. These particles have potential applications in hemoperfusion or separation of ot…
We describe some of the recent advances in the deposition and applications of amorphous diamond-like carbons, including an understanding of stress reduction by deposition. The subplantation model is described. Applications to hard, wear-resistant film are summarised.
A shape amphiphile composed of covalently linked spherical and cubic nanoparticles with distinct symmetry ([60]fullerene (C60) and polyhedral oligomeric silsesquioxane (POSS)) was synthesized and its solid state structures were characterized. The two types of nanoparticles are known to be generally immiscible, but the…
Three isomeric pyridine-containing L-glutamic lipids formed organogels in DMSO and self-assembled into different nanostructures of nanofiber, nanotwist and nanotube depending on the substituent position in the pyridine ring.
An aggregation-induced emission (AIE) luminogen, tetraphenylethene, has been successfully grafted onto mesoporous silica SBA-15 for the first time. The materials emit blue light upon UV irradiation, and are photostable for the ibuprofen (IBU) drug loading and release process, indicating their great potential for biome…
Although arid and semiarid regions account for about 40% of world land, no nanotoxicity studies on desert plants have been reported. In this investigation, Parkinsonia florida (blue palo verde), Prosopis juliflora-velutina (velvet mesquite) and Salsola tragus (tumbleweed) were selected to determine the phytotoxicity o…