Materials Literature
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Abstract Poly(butylene adipate‐ co ‐succinate) (PBAS), an aliphatic polyester, is known for its excellent biodegradability, but its physical and mechanical properties are poor. To improve the physical properties, stiff aromatic rings were added to PBAS through transesterification with poly(ethylene terephthalate) (PET…
The pyridoxal 5'-phosphate-dependent enzymes tyrosine phenol-lyase and tryptophan indole-lyase were encapsulated in wet nanoporous silica gels, a powerful method to selectively stabilize tertiary and quaternary protein conformations and to develop bioreactors and biosensors. A comparison of the enzyme reactivity in si…
A continuum equation for the shadowing growth of individual nanostructures by oblique angle deposition is proposed and numerically integrated. The radius R of rotationally symmetric columns is calculated as a function of height z. Before the radius R saturates at its final value Rsat, column shapes obey the power law…
A Hall mobility as high as 39.4 cm2 V−1 s−1 was obtained for cadmium indate (CdIn2O4) thin films deposited by rf reactive sputtering from a Cd–In alloy target. The structural and electrical properties for both as-sputtered and after-annealed thin films were studied as a function of the substrate temperatures. The resu…
Abstract A novel fluorinated diamine monomer, 1,4‐bis(4‐amino‐2‐trifluoromethylphenoxy)‐2,5‐di‐ tert ‐butylbenzene ( 2 ), was prepared through the nucleophilic substitution reaction of 2‐chloro‐5‐nitrobenzotrifluoride and 2,5‐di‐ tert ‐butylhydroquinone in the presence of potassium carbonate, followed by catalytic red…
The microstructure, static and dynamic magnetic and dielectric properties of BaCo1.3Zn0.7Fe16O27 doped with small amounts of SiO2 have been investigated. The results show that the crystal structure and static magnetic properties have no obvious changes as SiO2 varies from 0 to 1 wt %. However, the complex permittivity…
We present a novel ground state that explains the continuous charge modulated diagonal order recently observed in manganese oxides, at hole concentrations x larger than one-half. In this diagonal phase the charge is modulated with a predominant Fourier component inversely proportional to 1-x. Magnetically this state c…
Abstract Lanthanum hexacyanoferrate (LaHCF) was immobilized onto a substrate surface as an electroactive material by Au‐codeposition method. The LaHCF particles were attached to the electrode surface as the result of occlusion within the gold film deposited. This deposition method was first introduced for the preparat…
Abstract For Abstract see ChemInform Abstract in Full Text.
Abstract The kinetics of natural rubber vulcanization were investigated by use of a vulcameter. The vulcanization process before t dis (the time when the accelerators and/or intermediates react to depletion) was expressed in an equation as ln( M H − M t ) = ln A − k 1 ( t − t 0 ) α , which is different from the famous…
In this work, we report encouraging results on all-optical quantitative determinations in binary mixtures of chemical substances using porous silicon technology. Measuring the resonance peak shifts of porous silicon microcavities, after exposure to vapors of several liquid mixtures (iso-propanol/ethanol, iso-propanol/…
The dielectric and ferroelectric behaviors of relaxor ferroelectrics over the ferroelectric transition range are simulated using Monte Carlo simulation. The simulation is based on the Ginzburg–Landau ferroelectric model lattice in which a random distribution of two types of defects (dopants) which will suppress and en…
Abstract For [PMo 12 O 40 ] 3− , the presence of Li + produced a two‐electron wave at nearly the same potential as the first one‐electron wave in acetonitrile or acetone. The voltammetric behavior of [PMo 12 O 40 ] 3− in a binary mixture of acetonitrile and solvent S was compared with those in a mixture of acetone and…
Abstract For Abstract see ChemInform Abstract in Full Text.
Large size single transient cavitation bubbles of maximum diameter up to 3 cm with sonoluminescence have been generated in water by the `tube arrest' method. A simplified one-dimensional model of bubble growing and water column motion is proposed. The results of numerical simulation are compared with the experimental…
Abstract The electrochemical redox behavior of the polynuclear mixed valence ruthenium oxide cyanometallate complexes ( mv RuOxMCN, M=Fe, Cr, Ni, Cu, Ru and Pt) have been systematically studied in this report by using three redox sensitive organic probes of glucose, ethanol and formaldehyde. The results were interpre…
Abstract A dynamically photocrosslinked polypropylene (PP)/ethylene–propylene–diene (EPDM) rubber thermoplastic elastomer was prepared by simultaneously exposing the elastomer to UV light while melt‐mixing in the presence of a photoinitiator as well as a crosslinking agent. The effects of dynamic photocrosslinking and…
Monodisperse two-dimensional foams are produced by trapping a layer of equal-volume bubbles between two glass surfaces. The application of an appropriately angled or curved surface imposes a specific variation of the bubble area with position in the foam. With this easily demonstrated technique the foam can be created…
Sputter deposition of thin films using Xe gas instead of Ar is believed to suppress damage to the films caused by ion bombardment. To investigate the effects of Xe on ionic species in the rf plasma, and on the growth of ZnO thin films, rf plasmas generated using Xe and Ar sputtering gases were analyzed using Langmuir…
Single fluorescent molecules (represented by spheres with a volume equal to the actual van der Waals volume of the molecule) has been embedded in a polystyrene matrix (left). Such molecules act as probes for the study of polymer nanoscale (segmental scale) dynamics in thin films deposited on a glass cover slide (right…