Materials Literature
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This paper clarifies the topology of the mapping between v- and n-space in fermionic systems. Density manifolds corresponding to degeneracies g=1 and g>1 are shown to have the same mathematical measure: every density near a g-ensemble-v-representable (g-VR) n(r) is also g-VR (except ``boundary densities'' of lower mea…
Abstract The mechanical properties of poly(3‐hydroxybutyrate‐ co ‐3‐hydroxyvarelate) (PHBV) composites, reinforced with short abaca fibers prepared by melt mixing and subsequent injection molding, were investigated and compared with PHBV composites reinforced with glass fiber (GF). The influences of fiber length, fibe…
Theoretical ab initio calculations were carried out to simulate the hydrolysis of the siloxane bond under neutral and acidic conditions. The most important factors reducing the energy barrier of the reaction are the protonation of the siloxane oxygen (acid catalysis) and the basic assistance to the nucleophile (respon…
Attachment of drugs to high molecular weight polymers can significantly improve both tumor targeting and therapeutic efficacy due to the enhanced permeability and retention effect observed in tumor tissue. However, the commercial availability of well-defined water-soluble polymeric systems with narrow polydispersities…
Pd/CeO 2 (1 at. %) prepared by the solution-combustion method shows a higher catalytic activity for CO oxidation and NO reduction than Pd metal, PdO, and Pd dispersed over CeO 2 by the conventional method. To understand the higher catalytic properties, the structure of 1 at. % Pd/CeO 2 catalyst material has been inves…
High molecular weight polymers (> 20 000 Da) have been widely used as soluble drug carriers to improve drug targeting and therapeutic efficacy. Dendritic polymers are exceptional candidates for the preparation of near monodisperse drug carriers due to their well-defined structure, multivalency, and flexibility for tai…
A new technique used for polishing chemical vapor deposition (CVD) diamond films has been investigated, by which rough polishing of the CVD diamond films can be achieved efficiently. A CVD diamond film is coated with a thin layer of electrically conductive material in advance, and then electro-discharge machining (EDM…
The compound (Cu(pc))(3)(ReO(4))(2) (pc = phthalocyaninato) has been prepared by electrocrystallization from a p-dichlorobenzene solution of Cu(pc) and [N(n-Bu)(4)][ReO(4)]. (Cu(pc))(3)(ReO(4))(2) crystallizes with one formula unit in the triclinic space group P1 with cell constants at T = 153 K of a = 12.6202(6) A, b…
We have grown c-axis oriented epitaxial thin films of the bilayered perovskite ${\mathrm{La}}_{2\ensuremath{-}2x}{\mathrm{Sr}}_{1+2x}{\mathrm{Mn}}_{2}{\mathrm{O}}_{7}$ $(x=0.3,0.4)$ by laser molecular beam epitaxy on ${\mathrm{NdGaO}}_{3}$ and ${\mathrm{SrTiO}}_{3}$ substrates. X-ray diffraction and high-resolution tr…
Abstract An ionic diol bearing a one‐sided urethane‐stilbene group located on the ammonium quaternary structure was prepared and proposed as an intermediate for polyurethane ionomer synthesis. Polyurethane cationomers with stilbene ionic groups based on poly(tetramethylene oxide) diols, 4,4′‐diphenylmethane diisocyana…
A reliable way to determine the purity of the kinetically precipitated, noncrystalline lacunary polyoxoanion alpha-P(2)W(15)O(56)(12-) has been developed, namely, the conversion of alpha-P(2)W(15)O(56)(12-) into the tri-Nb(5+)- and V(5+)-containing polyoxoanions P(2)W(15)Nb(3)O(62)(9-) and P(2)W(15)V(3)O(62)(9-), resp…
A new method was developed to examine networks formed with linear macromers of fumaric acid and diacrylate cross-linking agents in order to analyze their cross-linked structure. This method involved the accelerated degradation of the networks and the analysis of the degradation products. Two model networks of poly(pro…
One of the novel multidimensional charge-transfer (CT) chromophores, 2-[4-(4,5-di(4-nitrophenyl)imidazolyl)phenyl]-4,5-di(4-aminophenyl)imidazole (DNPIPDAPI), was designed and synthesized; the polyimide was formed with it and 2,5-bis(4-aminophenyl)-3,4-diphenylthiophene (TPTDA) (BMI). The thermal and temporal stabilit…
In recent times antiferroelectric thin-film material compositions have been identified as one of the most significant thin films for development of devices such as high charge storage, charge couplers/decouplers, and high strain microelectromechanical systems. Thus, understanding the dielectric and electrical properti…
We have studied equilibrium phase behavior and nonequilibrium particle aggregation in a mixture of charged colloids and ionic wormlike micelles. At high enough concentration of micelles but below the overlap concentration ( c *), separation into coexisting colloidal gas and liquid phases occurred. Beyond c *, we obser…
We report thickness shear mode resonator acoustic wave data for films of regioregular poly(3-hexylthiophene) films exposed to acetonitrile solutions of LiClO4. Both the current- and acoustic wave-responses to constant (or slowly swept) potential show different regimes, whose characteristics, which are quite different…
There are two types of electron configurations, (d(xy))(2)(d(xz), d(yz))(3) and (d(xz), d(yz))(4)(d(xy))(1), in low-spin iron(III) porphyrin complexes. To reveal the solvent effects on the ground-state electron configurations, we have examined the (13)C- and (1)H-NMR spectra of low-spin dicyano[meso-tetrakis(2,4,6-tri…
1 Structure.- 2 Mechanical Properties of Coatings.- 3 Physical Properties of Coatings.- 4 Investigation of Protective Properties.- 5 Determination of Bond Strength Between a Coating and Base Metal.- 6 Wear Resistance of Coated Materials.- 7 Fatigue Failure of the Base Metal-Coating Composition.- 8 Breaking Strength an…
Abstract The interaction of a polycrystalline silver powder with ozone (5 mol.% O 3 in O 2 ) was investigated over the temperature range 300–923 K. Silver powder samples were reacted with ozone for 30 min at specified temperatures in this range. All experiments were performed at atmospheric pressure. Following treatme…
Multistep magnetic switching with single, double, and triple loops has been observed in single-crystal (001) ${\mathrm{Co}}_{2}\mathrm{MnGe}$ Heusler alloy films epitaxially grown on GaAs (001) substrates due to a combined magnetic anisotropy consisting of cubic magnetocrystalline anisotropy and uniaxial anisotropy. T…