Materials Literature
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The charge density wave distortions of the square nets of tellurium in AMRE Te 4 ( A = K, Na; M = Cu, Ag; RE = La, Ce) and RE Te 3 are influenced by the degree of separation and interaction of the tellurium nets. Each combination of A - M - RE in this family generates a unique CDW pattern.
Core-cross-linked polyion complex (PIC) micelles entrapping trypsin in the core were prepared by mixing trypsin and poly(ethylene glycol)-block-poly(alpha,beta-aspartic acid) in aqueous medium, followed by the introduction of glutaraldehyde cross-linkages. Trypsin incorporated into the core-cross-linked micelles showe…
Hyaluronan (HA) derivatives containing thiol-reactive electrophilic esters were prepared to react with thiol-modified macromolecules to give cross-linker-free hydrogels. Specifically, HA was converted to two haloacetate derivatives, HA bromoacetate (HABA) and HA iodoacetate (HAIA). In cytotoxicity assays, these reacti…
The symmetry conditions for the development of a macroscopic electrical polarization as a secondary order parameter to a magnetic ordering transition and the constraints on the direction of the polarization vector are determined by a nonconventional application of the theory of irreducible corepresentations. In our ap…
Dragline spider silk fibers have extraordinary attributes as biomaterials of superior strength and toughness. Previously we have shown that the conserved C-terminal domain of a dragline spider silk protein is necessary for directing oriented microfiber formation. Here we present for the first time a state-of-the-art m…
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…