Materials Literature
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Abstract Summary: Dissipative particle dynamics simulation was performed to study the formation of multicompartment micelles from ABC star triblock copolymers in water. The study revealed some new morphologies that had not been observed before and also provided a direct visualization of the evolution of wormlike multi…
A Ba0.3Sr0.7TiO3 (BST) thin film composite structure was fabricated by means of a selective epitaxial growth process. The epitaxial growth of BST on SrRuO3 electrode surface was selectively achieved at 485°C using a prepatterned ultrathin amorphous BST layer that locally prevented crystallization. This self-buildup me…
A matter of attraction: A magnet of nominal VII(TCNB−)1.5(TCNB0)x−1.5[V−I(CO)v]0.5⋅z solvent composition (Tc=325 K) is synthesized and its magnetic properties examined. Its amorphous nature makes it difficult to determine its complex composition and structure. It is a soft ferrimagnet with a coercive field of 7 Oe. Th…
An analytical model has been developed for the size-induced strain and stiffness of a nanocrystal from the perspective of thermodynamics and continuum medium mechanics. A core-shell structure with surface skin shell of an atomic diameter has been considered for the nanocrystal structure. Contribution from chemical and…
Easy deformation-induced nanostructuring was found in a Ti–Nb–Ta–In β alloy with low stability against α″ martensitic transformation. Upon severe plastic deformation at the sample center, the reversible β→α″ martensitic transformation plays a significant role for grain refinement. A possible mechanism is proposed, in…
Abstract We successfully synthesized the first conjugated polymer containing a bismuth atom in the conjugated main chain by incorporating a bismuth atom into the cyclopentadiene framework (bismole), which was constructed by a polymer reaction. A synthetic procedure and characterization of the obtained polymers were di…
Abstract Oligo(phenylenevinylene)s (OPV) with a 2,5‐diaminobenzene centre were prepared via twofold Horner olefinations of substituted terephthalaldehydes. Whereas variations of the environment only slightly alter the electronic excitation spectra, the fluorescence spectra appear to be highly responsive. Besides a pos…
Photoemission studies using synchrotron radiation have been performed on epitaxial ${\mathrm{Ti}}_{3}\mathrm{Si}{\mathrm{C}}_{2}(0001)$ and compound nanocrystalline (nc-)TiC/amorphous (a-)SiC thin films deposited by magnetron sputtering. As-introduced samples were found to be covered by surface oxides, $\mathrm{Si}{\m…
ABSTRACT: The effect of high‐pressure treatment on bovine intramuscular connective tissue was investigated under various pressures (0.1 to 500 MPa) at 8 °C for 5 min. Shear force value, heat solubility of collagen, and structural changes of pressurized intramuscular connective tissues were evaluated. High hydrostatic…
The dependence of the magnetic moments on the compositional order in Fe–Pt alloys was studied by neutron powder diffraction. For alloys with almost perfect L10-type long-range order the experimental value of the Fe magnetic moment was determined to be 2.8±0.1μB (extrapolated to zero temperature). Combined analysis of…
We report on a simple method to fabricate, under ambient conditions and within seconds, Schottky nanodiodes using electrospun polyaniline nanofibers and an inorganic n-doped semiconductor. In addition to being a rectifier, the advantage of our design is the complete exposure of the rectifying nanojunction to the surro…
A series of N-alkyl chitosan (NAC) derivatives were synthesized using a reductive alkylation reaction to examine their fungicidal and insecticidal activity. The chemical structures were characterized by IR and (1)H NMR spectroscopy, and the degree of substitution (DS) ranged from 0.02 to 0.37. Their fungicidal activit…
Epitaxial film of a layered cobalt oxide, Ca3Co4O9, was fabricated on a (0001) face of an α-Al2O3 substrate by a topotactic ion-exchange method using a γ-Na0.8CoO2 epitaxial film as a precursor. High-resolution x-ray diffraction and atomic force microscope measurements revealed that the film was high-quality (001)-ori…
A method to directly synthesize single crystalline CdS nanobelts has been developed. The advantages of the method in rapid synthesis within several minutes and catalyst free comparing to the previous method propose a potential avenue to the further practical device production and applications. The as-synthesized CdS n…
AIMS: To isolate and characterize bacteria from nature capable of producing poly-beta-hydroxyalkanoates in high yields from soy molasses oligosaccharides. METHODS AND RESULTS: Several strains of bacteria were obtained from enrichment cultures employing raffinose as major carbon source and inoculated with soybean field…
Polycrystalline Zn0.95Co0.05O is found to be paramagnetic at room temperature and down to 12K. Optical measurements prove the incorporation of Co2+ ions inside the ZnO lattice in the tetrahedral site. When the paramagnetic sample is heated in Ar∕H2 at 1125K for 2h, ferromagnetism with a very high value of magnetizatio…
We present a method to move and control drops of water on superhydrophobic surfaces using magnetic fields. Small water drops (volume of 5–35μl) that contain fractions of paramagnetic particles as low as 0.1% in weight can be moved at relatively high speed (7cm∕s) by displacing a permanent magnet placed below the surfa…
Nature calls: The lotus leaf is held as a symbol of purity due to its ability to remain clean after emerging from murky ponds. Its superhydrophobic surface, which removes undesired particles in water droplets, is mimicked by a simple and inexpensive method involving self-generation of superhydrophobic films on copper…
The partial-dislocation-mediated processes have so far eluded high-resolution transmission electron microscopy studies in nanocrystalline (nc) Ni with nonequilibrium grain boundaries. It is revealed that the nc Ni deformed largely by twinning instead of extended partials. The underlying mechanisms including dissociate…
Abstract Summary: Semicrystalline specimens of poly( L ‐lactic acid) (PLLA) were prepared by isothermal cold‐ or melt‐crystallization over a wide temperature range. The morphologies at different length scales were characterized using polarized optical microscopy, WAXS and SAXS. The glass transition temperature ( T g )…