Materials Literature
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A cast AM50 magnesium alloy was plasma electrolytic oxidation treated in a silicate based electrolyte using a direct current power source. Plasma electrolytic oxidation coatings produced at four different visible discharge conditions were characterised for their microstructural features, composition, tribological beha…
A multinary molecular nanocluster, in which a T3 supertetrahedral [Sn(4)Ga(4)Zn(2)Se(20)](8-) core was neutralized and covalently terminated by four [(TEPA)Mn](2+) (TEPA = tetraethylenepentamine) metal complexes, was synthesized and characterized. The cluster is assembled into, through hydrogen bonding and van de Waal…
Perfectly hydrophobic (PHO) coatings consisting of silicone nanofibers have been obtained via a solution process using methyltrialkoxysilanes as precursors. On the basis of thermal gravimetry and differential thermal analysis (TG-DTA) and Fourier transform infrared spectroscopy (FTIR) results, the formula of the nanof…
CeF 3 and CeF 3:Tb 3+ nanoparticles were prepared by reverse microemulsion with a functional monomer, methyl methacrylate (MMA), as the oil phase, and CeF 3:Tb 3+ /poly (methyl methacrylate) (PMMA) nanocomposites were obtained via polymerization of the MMA monomer. The nanoparticles and nanocomposites have been well c…
Out on a limb: Sonogashira coupling of a suitable AB(2) monomer containing two iodine and one alkyne group forms a hyperbranched conjugated polymer that is studded with iodine end groups (see picture: I purple). These iodine groups are a perfect handle for convenient, efficient, and high-yielding post-functionalizatio…
Dense Cu-doped CaBi 4 Ti 4 O 15 ferroelectric ceramics have been fabricated by a conventional ceramic technique. After doping by Cu, the ceramics become denser, and their electrical, piezoelectric and pyroelectric properties are improved. At the optimum doping level of 0.5 mol%, the ceramic exhibits a high density (69…
Segmented polyurethanes (PUs) containing poly(ethylene glycol) (PEG), poly(propylene glycol), or poly(dimethylsiloxane) soft segments have been prepared by two-step condensation polymerization. Atom force microscopy observation in air and solution indicates that the segmented PU forms a microphase separation on the su…
Abstract Mal flach, mal gerollt: Amphiphile Stäbe mit lateralen flexiblen Ketten organisieren sich in wässriger Lösung in zweidimensionale Blätter (siehe Bild). Bemerkenswerterweise rollen sich die Blätter beim Erhitzen reversibel zu röhrenförmigen Rollen zusammen, wie durch Kryo‐Transmissionselektronen‐ und Fluoresze…
Inspired by the concept of superatom via substitutionally doping an Al13 magic cluster, we investigated the H2 molecule dissociation on the doped icosahedral Al12X (X = B, Al, C, Si, P, Mg, and Ca) clusters by means of density functional theory. The computed reaction energies and activation barriers show that the conc…
We deeply investigated the properties of submonolayer distributions of isolated molecular ${\text{Cr}}_{7}\text{Ni}$ rings deposited on Au(111) by liquid phase. X-ray absorption spectra measured at the Cr and $\text{Ni}\text{ }{\text{L}}_{2,3}$ edges show that the grafting of the ${\text{Cr}}_{7}\text{Ni}$ rings onto…
Abstract Brazed aluminum plate‐fin heat exchangers are extensively used in gas separation processes including LNG, LPG, NGL, nitrogen rejection and olefins manufacture. In situations where mercury is a trace component of feed gas or liquid feeds to crackers, condensation of liquid or precipitation of solid mercury can…
We compare the behavior of a new two-dimensional aqueous colloidal model system with a simple numerical treatment. To the first order the attractive interaction between the colloids induced by an in-plane rotating ac electric field is dipolar, while the charge stabilization leads to a shorter ranged, Yukawa-like repul…
Sorption of Zn(II)(aq) on hematite (alpha-Fe2O3) nanoparticles (average diameter 10.5 nm) and microparticles (average diameter 550 nm) has been examined over a range of total Zn(II)(aq) concentrations (0.4-7.6 mM) using Zn K-edge EXAFS spectroscopy and selective chemical extractions. When ZnCl2 aqueous solutions were…
Diameter-tunable CdSe nanotubes are synthesized via a sacrificial template approach in solution phase by reacting Cd(OH) 2 nanowire bundles with NaHSe. The sacrificial templates of diameter-controlled Cd(OH) 2 nanowire bundles undergo an interdiffusion process between Se 2− and Cd 2+ species, and subsequently core/she…
Highly controlled morphology Au nanoparticle films can be formed on the surfaces of self-assembled monolayers (SAMs) by vapor deposition at cryogenic temperatures (approximately 10 K) with intervening condensed Xe layers on the SAMs serving as a buffer to reduce the kinetic energy of the Au atoms impinging on the surf…
Hydroxy-mediated methoxy formation or stabilization is probably an important process in many methanol adsorption systems. Hydrogen atoms originating from the scission of the methanol O-H bond react with the substrate and form water. This process may result 1) in the production of additional surface defects as reactive…
This study synthesizes Al-doped ZnO (AZO) nanoparticles using a chemical colloid process. Raman scattering analysis shows that Al doping increases the lattice defects and induces Raman vibration modes of 651 cm −1 . The Raman shift of the active mode E 2 (high) of AZO nanoparticles shows the presence and increase in t…
Nonstoichiometric perovskite-structured alkaline-earth titanates with ferroelectric, paraelectric, and paraelastic phases were investigated for thermoelectric properties. Depending on the degree of reduction, different trends are noted. In ferroelectric ${\text{BaTiO}}_{3}$, thermopower anomalies are observed in and a…
Today wearable electronics are playing a vital role in many applications such as military, medical application, telecommunications, and health care garments. Conductive textiles are also providing wide range of applications in areas of civilian and military purposes. In this research work, an attempt has been made to…
This paper reports, for the first time, on the self-assembly of polystyrene (PS) droplets into a perfectly segregated close-packed droplet array at a high-density polyethylene/polypropylene (HDPE/PP) interface during melt processing. Remarkably, even when highly concentrated at the interface, the PS remains in droplet…