Materials Literature
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Nanoparticles offer many advantages in the manufacture of ceramic products concerning processing and final properties, but are still difficult to process, and not all ceramic powder compositions can be obtained commercially like, e.g., α‐alumina. In this paper, the production of α‐alumina nanosized particles with a me…
How might it bind? The X-ray structural characterization of the first example of chelated HPO42− in a mononuclear transition-metal complex provides a possible model for HPO42− bonding to CoIII in the water oxidation catalyst isolated by Kanan and Nocera.
Mn-doped ZnO nanonails composed of hexagonal caps and shafts with large doping concentrations from 11.7 to 35.1 at.% were synthesized via a simple and straightforward non-aqueous solution-based route. The chemical composition, morphology and structure of the obtained nanocrystals were characterized by energy-dispersiv…
OBJECTIVES: Pegylated liposomal doxorubicin (PLD) is a formulation of doxorubicin encapsulated with polyethylene glycol-coated liposomes, which has prolonged circulation time and unique toxicity profile. This study deals with the pharmacokinetics and its relation to toxicity in Chinese patients with breast tumours. ME…
X-ray absorption near-edge structure (XANES), extended x-ray absorption fine structures (EXAFS), and photoluminescence measurements were used to elucidate the microstructural and photoluminescence properties of ZnO nanowires (ZnO-NWs) that had been treated with Eu by thermal diffusion. The O K- and Eu L3-edge XANES an…
We propose and test a method for controlling the size of nanoparticles, which plays a fundamental role in their electrical, optical, and mechanical properties. The method utilizes turbulent mixing, and is applicable to the fabrication of any type of nanoparticle that uses a solution environment in the preparation proc…
In this work, the possibility to obtain epitaxial perovskite/MgO/metal multilayered heterostructures has been demonstrated by sputtering techniques. The films are ferromagnetic at room temperature, with no indication of parasite phases from X-ray diffraction and electron microscopy experiments. We argue that these imp…
Electron spin resonance (ESR) measurements were carried out to study the rotation of methyl radicals (CH(3)) in solid carbon monoxide, carbon dioxide, and nitrogen matrices. The radicals were produced by dissociating methane by plasma bursts generated by a focused 193 nm ArF excimer laser radiation during the gas cond…
We present the investigation on the magnetocaloric effect (MCE) in an orbital-spin-coupled spinel vanadate Mn0.95Zn0.05V2O4 via the dc magnetization and the specific-heat measurements. The maximum values of magnetic entropy change of Mn0.95Zn0.05V2O4 reach 9.6 and 16.5 J/kg K for field change 0–4 T around ferrimagneti…
First-principles calculations were carried out to study Ti–C60 nanostructures as catalysts for water dissociation to generate hydrogen and elucidate the influence of water moisture in the air on hydrogen storage capability of such systems. Our results show that both Ti atoms and dimers on C60 can act as reaction cente…
Terahertz time-resolved spectroscopy is used to investigate the transport of photoexcited electrons in nanocrystalline mesoporous TiO2 films prepared by the recently proposed “brick and mortar” technology [Szeifert et al.Chem. Mater. 21, 1260 (2009)] with a variable fraction of nanocrystalline titania “bricks” and amo…
Atomistic simulations reveal that ceria nanorods, under uniaxial tension, can accommodate over 6% elastic deformation. Moreover, a reversible fluorite-to-rutile phase change occurs above 6% strain for a ceria nanorod that extends along [110]. We also observe that during unloading the stress increases with decreasing s…
Nanoparticles of a Nd-doped LaAlO(3) perovskite can be obtained rapidly and with quantitative yield using the Bradley (ether elimination) treatment of a mixture of individual Ln(2)Al(2)(O(i)Pr)(12)((i)PrOH)(2), Ln = La, Nd, in acetophenone. The initially produced particles are poorly crystalline, but their crystallini…
Anisotropic transport in graphene field-effect transistors fabricated on a vicinal SiC substrate with a self-organized periodic nanofacet structure is investigated. Graphene thermally grown on a vicinal substrate contains two following regions: atomically flat terraces and nanofacets (atomically stepped slopes). The g…
NiFe/BaTiO 3 heterostructures were grown on (0 0 1)-SrTiO 3 single crystal substrates with SrRuO 3 as a buffer layer via pulsed laser deposition and off-axis magnetron sputtering. The magneto-optical Kerr effect measurement on the heterostructures demonstrated that the magnetism of the NiFe thin film can be reversibly…
Ambient gas nanobubbles of size approximately 10(1)-10(2) nm occupying the hydrophobic surface of basal plane highly ordered pyrolytic graphite (HOPG) immersed in aqueous media at room temperature cause exfoliation of the top graphene layers, as revealed by both in situ and ex situ atomic force microscope (AFM) imagin…
We present terahertz-frequency characterization of doped silicon via a multiphysics numerical technique that couples ensemble Monte Carlo (EMC) simulation of carrier transport and a finite-difference time-domain (FDTD) solver of Maxwell’s curl equations. We elucidate the importance of rigorous enforcement of Gauss’s l…
Phase transformations of (001)-cut (Na1/2Bi1/2)TiO3 (NBT) and 1 at. % Mn-doped NBT (Mn-NBT) crystals have been investigated by means of dielectric permittivity, conventional x-ray diffraction (XRD), and high-resolution synchrotron XRD and reciprocal space mapping. An R−R+T−T−C transition sequence was observed in NBT a…
Nanofiber structures are used in several technologies such as membranes, reinforced materials, textiles, catalysts, sensors, and biomedical materials. For all these applications, it is important to know the morphology of the assemblies, in particular their pore and fiber dimension distributions. However, the current m…
In this letter, we show experimentally that the wetting property of a solid surface crucially depends on the surface morphological parameters such as; (1) root mean square (rms) roughness σ, (2) in-plane roughness correlation length ξ, and (3) roughness exponent α of the self-affine surface. We have shown that the con…