Materials Literature
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A novel supramolecular network has been prepared based on the formation of inclusion complexes between γ-cyclodextrin and poly(ethylene glycol), in which the PEG chains are interlocked by γ-CD rings. This PEG/γ-CD network exhibits good shape memory behavior because of the crosslinked structure. The crosslinked PEG/γ-C…
One hundred tensile tests were undertaken at each of five distinct fibre lengths (6, 10, 20, 30 and 50 mm) on a single batch of jute fibres from South Asia. The Young's moduli were found to be independent of length. The ultimate stress (fracture strength) and fracture strains were found to decrease with increasing fib…
Experimental data obtained using low energy electron beams are presented which show that films of N2O, of several hundred monolayers (ML), spontaneously acquire a positive potential of as high as 5 V. Films do not possess a dipole double layer but for >40 ML display a constant electric field within the material. This…
We introduce the characteristic crystallographic element (CCE) norm as a powerful descriptor of local structure in atomistic and particulate systems. The CCE-norm is sensitive both to radial and orientational deviations from perfect local order. Unlike other measures of local order, the CCE-norm decreases monotonicall…
Abstract The single crystals of the ternary system based on Bi 2‐x Tl x Se 3 (nominaly x = 0.0‐0.1) were prepared using the Bridgman technique. Samples with varying content of Tl were characterized by the measurement of lattice parameters, electrical conductivity σ ⊥ c , Hall coefficient R H ( B∥c ), and Seebeck coeff…
A new hetero-trichromophore ( HT-1 ) was designed and synthesized by linking neutral-ground-state (NGS) chromophore 1 with zwitterionic (ZWI) chromophore 2, and their molecular structures were confirmed by elemental analysis, UV−vis absorption spectra, 1 H NMR, etc. Theoretical calculations show that there is a decrea…
In this paper we present a phenomenological approach computing the behavior of a cobalt particle by the Della Torre–Pinzaglia–Cardelli (DPC) model. The identification of the model is realized using a suitable numerical procedure and a set of data obtained using a micromagnetic numerical model based on Brown’s equation…
Abstract Fly ash (FA) as a by‐product of power station plants is known to consist of silicon dioxide similar to precipitated silica. The use of FA as filler in natural rubber (NR) was of interest to reinforce and/or reduce product cost. In this article, viscoelastic properties of FA‐filled NR composites with various F…
Photoluminescence study of novel phosphorus-doped ZnO nanotetrapods synthesized by chemical vapour deposition, Yu, Dongqi, Hu, Lizhong, Qiao, Shuangshuang, Zhang, Heqiu, Len, Song-En Andy, Len, L K, Fu, Qiang, Chen, Xi, Sun, Kaitong
A new iron(iii) 2,4,6-trimethylbenzenesulfonate (MSA) with composition [Fe(OH2)5(MSA)3] has been prepared from the reaction of Fe(OH)3·xH2O and three molar equivalents of 2,4,6-trimethylbenzenesulfonic acid and used as oxidant in the preparation of highly conducting polypyrrole (PPy) and poly(3,4-ethylenedioxythiophen…
A facile, template-free method was used to grow large areas of well-aligned ZnO nanowire arrays on amorphous SiO 2 substrates. The arrays are composed of vertically aligned, single-crystalline, wurtzitic [001] ZnO nanowires whose diameters were easily controlled by growth temperature, adjusted by changing the distance…
Abstract Antimicrobial silver nanoparticles (NPs) were successfully synthesized on the surface of silk fibers via γ‐ray irradiation. The products were characterized with scanning electron microscope (SEM), energy dispersion spectrum, and X‐ray diffraction. The results revealed that the silver particles with a diameter…
The effect of nitrogen on the magnetic properties of C-doped ZnO has been investigated. It has been found that a low concentration of N doping does not lead to an apparent change of the magnetization in C-doped ZnO films. When N doping concentration exceeds 0.05 at. %, the magnetization of C–ZnO films increases signif…
Urchin-like PANI microspheres with an average diameter of 5-10 µm have been successfully prepared. Their surfaces consist of highly oriented nanofibers of ≈30 nm diameter and 1 µm length. The solvent composition plays an important role in the formation process of urchin-like PANI microspheres. The structure of the pro…
Fluorescence resonance energy transfer (FRET) is investigated with manganese-doped ZnSe nanoparticles (quantum dots) as long fluorescence lifetime donors and spiropyran molecules as acceptors. The kinetics of photochemical ring-opening reaction of spiropyran upon UV-illumination is exploited to achieve efficient quenc…
Mn-doped CuCrO2 polycrystalline semiconductors were synthesized by the sol–gel method. The valence state of the Mn ions in the CuCr1−xMnxO2 samples was identified as 3+ by analysing their lattice parameters, their electrical properties and their x-ray photoelectron spectra. The temperature dependence of the susceptibi…
OBJECTIVE: To determine the prevalence of nephrogenic systemic fibrosis (NSF) in patients with chronic kidney disease (CKD) who have received gadopentetate dimeglumine. MATERIALS AND METHODS: We retrospectively studied all patients who underwent contrast-enhanced magnetic resonance imagings (CE-MRIs) between January 1…
A simple general method has been developed for the synthesis of Zr-based multicomponent functional materials with highly ordered mesoporous structure, including pure zirconia, ceria−zirconia solid solutions, yttria-stabilized zirconia, and scandia-stabilized zirconia. Amphiphilic poly(alkylene oxide) block copolymers…
Chimeric enzymes composed of polyhydroxyalkanoate (PHA) synthases from Ralstonia eutropha (Cupriavidus necator) (PhaC(Re)) and Aeromonas caviae (PhaC(Ac)) were constructed. PhaC(Re) is known for its potent enzymatic activity among the characterized PHA synthases. PhaCAc has broad substrate specificity and synthesizes…
Tissue engineered constructs with cells growing in an organized manner have been shown to have improved mechanical properties. This can be especially important when constructing tissues that need to perform under load, such as cardiac and vascular tissue. Enhancement of mechanical properties of tissue engineered vascu…