Materials Literature
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DASH is a user-friendly graphical-user-interface-driven computer program for solving crystal structures from X-ray powder diffraction data, optimized for molecular structures. Algorithms for multiple peak fitting, unit-cell indexing and space-group determination are included as part of the program. Molecular models ca…
The rapid growth in the use of in vitro methods for nanoparticle toxicity assessment has proceeded with limited consideration of the unique kinetics of these materials in solution. Particles in general and nanoparticles specifically, diffuse, settle, and agglomerate in cell culture media as a function of systemic and…
We have investigated the variables that influence DNA coverage on gold nanoparticles. The effects of salt concentration, spacer composition, nanoparticle size, and degree of sonication have been evaluated. Maximum loading was obtained by salt aging the nanoparticles to approximately 0.7 M NaCl in the presence of DNA c…
Abstract Recent achievements in the construction of surfaces with special wettabilities, such as superhydrophobicity, superhydrophilicity, superoleophobicity, superoleophilicity, superamphiphilicity, superamphiphobicity, superhydrophobicity/superoleophilicity, and reversible switching between superhydrophobicity and s…
The frequency-reduced representation, g(ω)/ω2, of the vibrational density of states g(ω), known as the Boson peak is frequently used to extract information on structural and dynamical properties of glasses and supercooled liquids. The g(ω)/ω2 representation is preferred over the true excess of the vibrational modes, d…
Erratum of Europhys. Lett. 76 p. 149
A new 3D heteropolyoxotungstate, (NH4)2{[Ni(H2O)3]2[TeW6O24]} · H2O (1), has been isolated from hydrothermal reactions and characterized by elemental analyses, IR spectra and X-ray crystallography. Single-crystal X-ray diffraction analysis reveals that compound 1 possess unusual (3,6)-connected networks constructed fr…
Abstract Summary: The crystallization of the PBT minor phase in an EEA continuous matrix has been studied by DSC and SEM. When PBT is the minor phase, PBT crystallizes at a lower temperature, as expected, near T c,f1 = 105 °C. Introducing different CB nanoparticles into the EEA continuous phase at contents increasing…
Anion diffusion was simulated in the system (Y0.2Zr0.8)–(O1.72N0.15) with the molecular dynamics (MD) technique using the program DL_POLY, employing empirical potentials of the Buckingham type. To describe nitrogen migration, nitrogen potentials had to be developed, assuming the interaction of charged nitrogen shells…
Strontium titanate is an incipient ferroelectric where the freezing of the soft polar mode is inhibited by quantum fluctuations (Müller K. A. and Burhard H., Phys. Rev. B , 19 (1979) 3593). Exchanging 16 O by its isotope 18 O induces ferroelectricity at T c = 25 K (Itoh M., Wang R., Inaguma Y., Yamaguchi T., Shan Y. J…
Abstract Summary: One of the important applications of PUEs is as damping materials such as the spring aids used in cars, which need to have excellent cyclic fatigue durability. Our results show that the fatigue durability of PUE can be significantly improved by incorporating organoclay. The best result was obtained f…
Abstract Summary: So‐called functionally gradient materials have received increased attention as a new type of composite whose microelements, including composition and structure, change spatially to optimize the gradient properties for a specific application. In this study, a new technique for continuously preparing a…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTElectrospinning in Near-Critical CO2Zhihao Shen, Bowlin E. Thompson, and Mark A. McHughView Author Information Philip Morris USA Postgraduate Research Program, 4201 Commerce Road, Richmond, Virginia 23234, and Department of Chemical…
X-ray photon correlation spectroscopy experiments were conducted on bicontinuous microemulsion and lamellar phases in polystyrene/polyisoprene/poly(styrene- b -isoprene) blends. Regardless of the microstructure, the scattering intensity autocorrelation function at low temperatures in the vicinity of the primary X-ray…
The research work conducted in our group concerning the study of the potassium-catalyzed NO x reduction by carbon materials is presented. The importance of the different variables affecting the NO x −carbon reactions is discussed, e.g. carbon porosity, coal rank, potassium loading, influence of the binder used, and ef…
Abstract A water pipe, formed exclusively from lattice water molecules, is stabilized in an organic–inorganic hybrid materialCu 2 (phen) 2 (CH 3 COO)(CH 3 COOH)(H 2 O) 2 ][Al(OH) 6 Mo 6 O 18 ] · 28H 2 O ( 1 ). Compound 1 consists of an Anderson‐type heteropolyanion, a copper acetate dimer, and 28 lattice water molecul…
The thermal conductivity of carbon-doped silicon dioxide films, fabricated to potentially serve as interlayer materials with low dielectric permittivity in small circuits, has been recently measured [B. C. Daly et al., Physica B 316-317, 254 (2002)]. Trends in the results were found to be inconsistent with the minimum…
We propose a model for calculating the phonon frequencies of any $(n,m)$ nanotube by considering explicitly the curvature of the system and the effects of long-range interactions determined by $\ensuremath{\pi}$ electrons. We show that the electron-phonon coupling strength is directly related to the electronic structu…
Aluminum (III) meso-tetraphenylporphyrins axially bonded to phosphinate anions have been synthesized and characterized by NMR and UV-visible spectroscopy, single-crystal X-ray diffraction, and FAB+ mass spectrometry. According to the solvent and the size of the anion, these compounds are able to self-assemble in two d…
Mesoporous palladium/silicon nitride nanocomposites were prepared via three different chemical routes to generate simultaneous control of the solid-state morphology of the palladium nanoparticles and that of the silicon nitride support at the same time as controlling the pore size and size distribution. Pyrolysis of t…