Materials Literature
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A variety of features broadly classed as deformation microstructure elements are created during the plastic deformation of polycrystalline metals. While virtually all elements of deformation microstructure are composed of dislocations, describing the creation and evolution of larger-scale elements in terms of interact…
Alloyed ternary CdS 1− X Se X nanoribbons of variable composition X were synthesized by the combination of thermal evaporation and laser ablation. High-resolution transmission electron microscopy and x-ray diffraction showed that the ternary CdS 1− X Se X nanoribbons were single phase and highly crystalline. Room-temp…
Solving the Boltzmann–BGK equation, we investigate a flow generated by an infinite plate oscillating with frequency ω. The geometrical simplicity of the problem allows a solution in the entire range of dimensionless frequency variation 0 ≤ ωτ ≤ ∞, where τ is a properly defined relaxation time. A transition from viscoe…
Grid ion: A Cu16 grid prepared with a tetratopic bishydrazone ligand has metal ions in a [4×4] array linked by a combination of μ-Ohydrazone and μ-NNpyridazine bridges. The six-coordinate copper ions display Jahn–Teller distortion, leading to some orbitally orthogonal bridges. Multiple intragrid magnetic-exchange path…
Full metal jacket: Carbon nanotubes (CNTs) are used as templates to form well-defined anisotropic magnetic nanowires with ferromagnetic behavior at room temperature. Uniform assembly of catalytic Pt nanoparticles on the CNTs yields organic–inorganic hybrid composites that serve as 1D substrates for the preparation of…
GST thin films were deposited by combined ALD and CVD at a temperature of 200 °C. The selective growth behavior of GST on the contact hole was observed. This was explained by the preferential nucleation property of Sb and subsequent adsorption of Te and Ge on the Sb nuclei on SiO2.
Far-infrared optical and dielectric properties of nanostructured ZnO of different morphologies are characterized by terahertz time-domain spectroscopy. Frequency-dependent complex dielectric function, power absorption, and refractive index are experimentally measured in the terahertz regime. The results are analyzed a…
A systematic study of the magnetic properties and the Hall effect was performed on pulsed laser deposited 5% cobalt doped $(\mathrm{La},\mathrm{Sr})\mathrm{Ti}{\mathrm{O}}_{3}$ thin films, especially grown at high substrate temperature. The system is found to be superparamagnetic in nature as evidenced by several prot…
Dissipative particle dynamics (DPD) was used to investigate the behavior of two opposing end-grafted charged polymer brushes in aqueous media under normal compression and lateral shear. The effect of polymer molecular weight, degree of ionization, grafting density, ionic strength, and compression on the polymer confor…
Plane-wave supercell DFT calculations within the PW91 generalized gradient approximation are used to examine the influence of oxygen coverage on the structure, energetics, and electronics of the RuO2(110) surface. Filling of O(br) and O(cus) sites is exothermic with respect to molecular O2 at all coverages and causes…
Abstract Zinc oxide (ZnO) nanoparticles assembled in one dimension to give rod‐shaped morphology were synthesized. The effect of these ZnO nanoparticles (average particle size ∼ 50 nm) as the curing agent for carboxylated nitrile rubber was studied with special attention to cure characteristics, mechanical properties,…
Abstract Nanocomposites based on 80/20 and 20/80 (w/w) poly(ε‐caprolactone) (PCL)/poly(ethylene oxide) (PEO) immiscible blends and organophilic layered silicates were prepared with melt extrusion. From transmission electron microscopy analysis, it was observed that the exfoliated silicate platelets were preferentially…
Single-crystalline straight, zigzag, helical, and branched nanowires can be synthesized by oriented attachment of PbSe nanocrystals followed by their fusion in the presence of different surfactants. These colloidal nanowires can be aligned in external electrical fields, facilitating their integration into electronic c…
Enzymes from psychrophiles show higher catalytic efficiency in the 0-20 degrees C temperature range and often lower thermostability in comparison with meso/thermophilic homologs. Physical and chemical characterization of these enzymes is currently underway in order to understand the molecular basis of cold adaptation.…
The use of drugs with intracellular targets will strongly depend on the availability of delivery systems that are able to deliver them to specific intracellular sites at an optimal rate. Biodegradable dextran nanogels were prepared using liposomes as a nanoscaled reactor.1,2 These nanogels were obtained by UV polymeri…
A unified physically based microstructural representation of f.c.c. crystalline materials has been developed and implemented to investigate the microstructural behaviour of f.c.c. crystalline aggregates under inelastic deformations. The proposed framework is based on coupling a multiple-slip crystal plasticity formula…
X-ray diffraction techniques have been applied to characterize the Au-catalysed growth of aligned ZnO nanowire arrays on an AlGaN/AlN/Al 2 O 3 substrate. The orientation relationships between the AlN layer, AlGaN layer, ZnO nanowires and Au particles were determined using x-ray texture analysis. Two orientations of th…
We show how to change optically the distance between two protein-linked gold nanoparticles by Raman-induced motion of the linker protein. Rayleigh scattering spectroscopy of the coupled-particle plasmon allows us to compare the inter-nanoparticle distance of individual protein-linked gold nanoparticle dimers before an…
We study static and dynamic properties of polymer brushes of moderate and high grafting densities using molecular dynamics simulations. The self-consistent-field theory is able to reproduce the observed density profiles once finite extensibility of the chains is included. A similar approach, using a Langevin-type mode…
High-quality ultrawide Se and Te nanobelts have been prepared through thermal evaporation and deposition of Se and Te bulk powder in a vacuum system. The products were characterized by powder X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and high-resolution transmission electron micros…