Materials Literature
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Abstract The further use of di‐2‐pyridyl ketone [(2‐py) 2 CO] innickel( II ) acetate chemistry has been investigated. Various synthetic procedures have led to the synthesis ofcomplexes [Ni 4 (O 2 CMe) 2 {(2‐py) 2 C(OH)O} 4 (H 2 O) 2 ](ClO 4 ) 2 ( 1 ), [Ni(O 2 CMe){(2‐py) 2 C(OH) 2 }{(2‐py) 2 CO}](ClO 4 ) · H 2 O ( 2·…
Paclitaxel is one of the best antineoplastic drugs found in nature in the past decades, which has excellent therapeutic effects against a wide spectrum of cancers. Because of its high hydrophobicity, Cremophor EL has to be used as adjuvant in its clinical dosage form (Taxol), which has been found to cause serious side…
The susceptibility spectra of ten molecular glass formers are completely interpolated by an extension of the generalized gamma distribution of correlation times. The data cover at least 15 decades in frequency and the interpolation includes both alpha peak and excess wing. It is shown that the line shape parameters an…
On the rung way: Concerted self-organization of an α,ω-bis(triphenylenetetrahydroxy)disiloxane through π–π-stacking and H-bonding interactions generates a supramolecular channel in which silanol groups are entrapped between two hydrophobic columns. Ordered polycondensation leads to a high-molecular-weight, soluble, la…
Electrosynthesis of zinc oxide has been performed in track etched polymer membranes to yield nanorods of defined diameter and controlled length. The electrodeposition process involves two steps: (i) electroreduction of either hydrogen peroxide or nitrate ions to alter the local pH within the pores and (ii) precipitati…
We investigated the optical properties of isolated single aggregates of Ag nanoparticles (Ag nanoaggregates) on which rhodamine 6G molecules were adsorbed to reveal experimentally a correlation among plasmon resonance Rayleigh scattering, surface-enhanced resonance Raman scattering (SERRS), and its background light em…
Electron-electron correlations affect the band gap of half-metallic ferromagnets by introducing nonquasiparticle states just above the Fermi level. In contrast with the spin-orbit coupling, a large asymmetric nonquasiparticle spectral weight is present in the minority-spin channel, leading to a peculiar finite-tempera…
Abstract Highly crystalline polyaniline (PANI) nanotubes and nanofibers ca. 80–170 nm in diameter are successfully prepared by a “micelle soft‐template” method in the presence of dicarboxylic acids dopants with different numbers ( n ) of –CH 2 – groups ( n = 0–4). It is found that the diameter of the nanostructures in…
Tetracyanoethylene (TCNE) undergoes numerous reactions and is reported to exist in many structural motifs. Identification of these forms and motifs can be challenging. Nonetheless, the number of nu(CN) absorptions and their frequencies provide insight with respect to the specific forms and charge on the TCNE fragment.…
The dynamics of crystal surfaces in the presence of electromigration is analyzed. From a phase field model with a migration force which depends on the local geometry, a step model with additional contributions is derived in the kinetic boundary conditions. These contributions trigger various surface instabilities, suc…
An experiment which describes the quantum states of neutrons in magnetic thin films and superlattices is reviewed.
Electronic states localized at domain walls between ferromagnetically ordered phases in two-dimensional electron systems are generated by moderate spin-orbit coupling. The spin carried by these states depends on the slope of the magnetic background at the domain wall. The number of localized states is determined by a…
We investigated the conducting properties of functionalized single wall nanotubes (SWNTs) with a finite addend concentration. Robust differences are found between monovalent and divalent additions. For the former a small number of addends can significantly disrupt the ballistic conductance of nanotubes near the Fermi…
We report a temperature-dependent Raman scattering investigation of the multiferroic material bismuth ferrite ${\mathrm{BiFeO}}_{3}$ (BFO). The observed loss of the Raman spectrum at the ferroelectric Curie temperature ${T}_{C}$ should be in agreement with a cubic $Pm\overline{3}m$ structure of the high-temperature pa…
Propene oxide, which is one of the major commodity chemicals used in chemical industry, desperately requires a new process for its production, because of the disadvantages that are encountered with the currently available processes. This paper discusses the existing processes used for the production of propene oxide t…
Thermoplastic Vulcanizate (TPV) is a special class of Thermoplastic Elastomers (TPEs) made of a rubber/plastic polymer mixture in which the rubber phase is highly vulcanized. It is prepared by melt mixing a thermoplastic with an elastomer and by in-situ crosslinking of the rubber phase. Currently, TPV is replacing EPD…
A polyimide coated substrate is treated so that vertical liquid crystal alignment (theta=0) obtains over the temperature range T(NA)< T < T(a), where T(NA) is the nematic-smectic-A transition temperature. When the cell is filled with a chiral liquid crystal whose helical pitch is unwound (surface stabilized), applicat…
<div class="htmlview paragraph">A specific objective of the European Mg-Engine project is to qualify at least two die cast Mg alloys with improved high temperature properties, in addition to satisfactory corrosion resistance, castability and costs. This paper discusses the selection criteria for high temperature…
This paper describes some of the recent developments that have been made by ArvinMeritor and Stelco Inc. to address the need for lighter weight suspension components by North American vehicle manufacturers. The move towards lighter weight suspension components is being driven primarily by the mandate to reduce the ove…
Carbon nanotubes are the basic element of modern nanoelectronic devices. One of the most promising their applications is a carbon nanotube based conducting channel in field-effect transistor with SiO<sub>2</sub> dielectric deposited on the nanotube. Simulation of SiO<sub>x</sub> on CNT technology and some properties o…