Materials Literature
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In this study, PVA/TiO2 anatase nanocomposite fibers were prepared successfully by electrospinning. The nanofibers were characterized by SEM, XRD, Raman spectroscopy, EDS, TEM and UV-Vis diffuse reflectance spectroscopy. The characterization showed that the average diameters obtained are dependent of the total loading…
Monte Carlo models are widely used for the study of microstructural and microchemical evolution of materials under irradiation. However, they often link explicitly the relevant activation energies to the energy difference between local equilibrium states. We provide a simple example (di-vacancy migration in iron) in w…
We use computer simulations to study the dynamics of a physical gel at high densities where gelation and the glass transition interfere. We report and provide detailed physical understanding of complex relaxation patterns for time-correlation functions which generically decay in a three-step process. For certain combi…
The preferential enrichment phenomenon has been observed for two neutral α-amino acids, leucine and alanine, by applying kinetic crystallization conditions using high concentrations and appropriate solvents. The mechanism of preferential enrichment of leucine and alanine is proposed on the basis of (i) the difference…
We report the high-resolution angle-resolved photoemission spectroscopy studies of electronic structure of ${\text{EuFe}}_{2}{\text{As}}_{2}$. The paramagnetic state data are found to be consistent with density-functional calculations. In the antiferromagnetic ordering state of Fe, our results show that the band split…
A neutron scattering methodology is proposed to simultaneously determine the total hydrogen adsorption, the excess hydrogen adsorption, and hydrogen gas confined in the porous sample. This method is capable of an absolute measurement of the hydrogen content without need for any calibration. It involves the least amoun…
The usage of a microreactor system for the direct epoxidation of propene over a gold-titania-based catalyst system using a mixture of hydrogen, oxygen, and propene allows for the safe operation of the reaction in the explosive regime. A kinetic study was performed on the effect of the concentration of hydrogen, oxygen…
Inelastic neutron-scattering measurements have been performed on underdoped $\text{Ba}{({\text{Fe}}_{1\ensuremath{-}x}{\text{Co}}_{x})}_{2}{\text{As}}_{2}$ $(x=4.7\mathrm{%})$ where superconductivity and long-range antiferromagnetic (AFM) order coexist. The magnetic spectrum found in the normal state is strongly dampe…
Graphene nanosheets have been synthesized from commercial expandable graphite by heating in a microwave oven and dispersing in ethanol by ultrasonication. Scanning and transmission electron microscopy and electron energy-loss spectroscopy and atomic force microscope showed that the nanosheets were about 2 nm in thickn…
In this study, the effects of sodium dodecyl benzene sulfonate, polyvinylpyrrolidone, sodium dodecyl benzene sulfonate/polyvinylpyrrolidone, and Triton X-100 on the dispersion of 0.1 wt% carbon nanotubes in dimethylacetamide are reported. Sedimentation results show that except for sodium dodecyl benzene sulfonate, all…
A single crystal plasticity theory for insertion into finite element simulation is formulated using sequential laminates to model subgrain dislocation structures. It is known that local models do not adequately account for latent hardening, as latent hardening is not only a material property, but a nonlocal property (…
This study increases the understanding at a molecular level of the interactions between DNA and poly(amido amine) (PAMAM) dendrimers on solid surfaces, which is a subject of potential interest in applications such as gene therapy. We have used in situ null ellipsometry and neutron reflectometry to study the structure…
The title compound, KZnB(3)O(6) contains a remarkable [B(6)O(12)](6-) group ( symmetry) formed by two rings linked by edge-sharing BO(4) tetra-hedra, a feature that has only been observed previously under high pressure conditions. These borate groups are connected through distorted ZnO(4) tetra-hedra in edge-shared pa…
The electronic and structural properties of a series of triniobium oxide clusters, Nb(3)O(n)(-) and Nb(3)O(n) (n = 3-8), are investigated using photoelectron spectroscopy (PES) and density functional theory (DFT) calculations. PES spectra are obtained for Nb(3)O(n)(-) (n = 3-8) at various photon energies and are used…
Nd-Sialon microcrystals with a novel orthogonal array morphology were developed by inducing catalysis of Fe for the first time, via a combination of vapor−liquid−solid (VLS) and vapor−solid (VS) growth mechanisms. The chemical composition of Nd-Sialon crystals was determined to be NdSi 5.4 Al 1.6 O 0.6 N 9.4 . The mor…
A new binuclear copper(II) complex, [Cu2(μ1,1-N3)2(PP)2)] ⋅ 2ClO4 (PP = 2,6-dipyrazol-1-yl-pyridine), was synthesized with double azide as asymmetric end-on bridge ligand and 2,6-dipyrazol-1-yl-pyridine as the terminal ligand. The crystal structure was determined by X-ray crystallography. Cu(II) is located in a distor…
We examined the electrical conductivity and transmittance of six types of SWNT network films, developed for potential use in transparent conductive films, to investigate the effect of Au doping on single-walled carbon nanotube (SWNT) defects: (i) SWNT network films without Au doping (as-produced (AP-SWNTs), purified (…
Welding is used extensively in the construction and repair of underwater pipelines. Recently, the volume of application of underwater welding in these operations has been expanded considerably. Thi...
The evaluation of the radial electron density profile of a drug containing a sterically stabilized liposomal system is described. Using synchrotron small-angle X-ray scattering, we were able to characterize the hydrophilic shell of the polyethylene glycol chains. Using a Gaussian model for describing the electron dens…
For the first time, fully fledged phthalocyanines (Pcs) were ex post glycoconjugated, that is, via 1,3-dipolar cycloaddition reaction. This divergent approach gains rapid access to a broad range of highly diverse Pcs bearing chemically sensitive substituents. This will be a breakthrough in generating structure-activit…