Materials Literature
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Abstract In this article, the positive temperature coefficient (PTC) and interaction based on low‐density polyethylene (LDPE) filled with the loading of graphite (G) powder have been investigated. The dependence of the room temperature resistivity on filler content showed the significant decrease. The PTC behavior enh…
The practice of coating fruits and vegetables dates back to the twelfth and thirteenth centuries, where, in China, commodities were commonly dipped in hot waxes to encourage fermentation (Kaplan, 1986; Yehoshua, 1987). In the last several decades, coatings composed of lipid, polysaccharide, and protein, alone or in co…
Fragt nicht was, sondern wie oft: Berry-Pseutorotation (BPR) und Ugi-Drehkreuzbewegung („turnstile rotation“) werden generell als unterschiedliche Umlagerungsmechanismen für trigonal-bipyramidale Strukturen behandelt, in Wirklichkeit sind sie aber äquivalent. Alternativ lassen sich derartige Prozesse als Folgen aus Ps…
Abstract Recycling of poly(ethyleneterephthalate) waste was achieved through glycolysis using diethyleneglycol (DEG) and poly(ethyleneglycol) (PEG 400), which yielded different fractions that exhibited hydroxyl numbers of 174.41 and 54.86 mg of KOH/g, respectively, whereas GPC profiles revealed bimodality in both case…
Abstract The thermoelectric parameters, in particular the thermal conductivity and dimensionless figure of merit ZT , of ZnO nanowires, are estimated via two terminal current–voltage measurements. The measurements are carried out in situ in a transmission electron microscope and negative differential conductance is ob…
Von beidem das Beste: Ein neuartiges amphiphiles Homopolymer, das aus einem Monomer mit einer hydrophoben (rot) und einer hydrophilen Gruppe (grün) synthetisiert wurde, unterliegt in wässriger Lösung einem Selbstorganisationsprozess. Dadurch entstehen redoxempfindliche Micellen mit mehreren Kernen und einer Schale, di…
We studied the effects of the number of crystal water molecules on the magnetic behavior of {[Ni(en)(2)](3)[Fe(CN)(6)](2)·xH(2)O}(n) (1-3) (where en = ethylenediamine and x = 3, 2, or 0) coordination polymers by (57)Fe Mössbauer spectroscopy, single-crystal X-ray diffraction, and magnetization measurements. Magnetic p…
We investigated the electronic structures of anatase Ti 1− x Nb x O 2+δ (TNO) thin films as a function of Nb concentration x using photoemission spectroscopy (PES) measurements to elucidate the origin of the abrupt decrease in carrier activation in heavily Nb-doped regime. The existing intensity ratio of Nb 5+ evaluat…
One of the most viable ways to grow nanostructures is electro deposition. However, most electrodeposited samples are obtained by three-electrode electrochemical cell. We successfully use a much simpler two-electrode cell to grow different ZnO nanostructures from common chemical reagents. Concentration, pH of the elect…
Over the past few decades, liquid crystal (LC) displays (LCDs) have been at the leading edge of their field. Many scientists and manufacturers have devoted studies to improve the performance of LCD characteristics such as a fast response, high contrast ratio, and wide viewing angle. Therefore the in-plane switching (I…
Abstract High curing temperature is the key drawback of present heat resistant thermosetting resins. A novel epoxy‐functionalized hyperbranched poly(phenylene oxide), coded as eHBPPO, was synthesized, and used to modify 2,2′‐bis (4‐cyanatophenyl) isopropylidene (CE). Compared with CE, CE/eHBPPO system has significantl…
Experiments were conducted on 48 representative surface and subsurface soils collected from different climatic and physiographic conditions in southern Iran to assess factors affecting potassium (K) release and to find the best fitting models to describe the release kinetics of K to 0.01 m CaCl2. Mineralogical analysi…
Les nanomatériaux représentent un domaine de recherche actif mais aussi un secteur économique en pleine expansion en vue de nombreuses applications. Par exemple la production française pour les matériaux les plus courants (comme la silice, le dioxyde de titane, le noir de carbone) se chiffre en centaines de milliers d…
Water strider can slide on water surface with a very small drag force using its long superhydrophobic legs. Inspired by the water strider legs, we report here a novel design of superhydrophobic grille structure for drag reduction. A miniature boat covered with a superhydrophobic grille at the bottom is fabricated and…
Matchsticklike, Au-decorated, CdSe-seeded CdS nanorods are demonstrated as being able to retain a significant amount of their original fluorescence properties, exhibiting quantum yields of up to 23%. A proof-of-concept type application of these fluorescent metal-tipped semiconductor nanorods is given, exploiting the d…
Trumpet-shaped carbon nanocone (CNC) is used as a π-conjugated bridge to design high-performance nonlinear optical (NLO) material. Owing to the attractive trumpet-shaped structure, O 2 N–CNC–NH 2 exhibits nonlinear optical behavior that is both surprisingly and qualitatively distinct from conventional π-conjugated org…
Ferroelectric ceramics were discovered in the 1940s in polycrystalline barium titanate (von Hippel et al., 1946; Wul & Goldman, 1945), since then, there has been a continuous succession of new materials and technology developments that have led to a significant number of industrial and commercial applications. Structu…
The heteroleptic supramolecular double-decker porphyrin 1 was synthesized with DABCO as a guest between two cofacial porphyrin units as characterized by (1)H NMR and ESI-MS. While DABCO is not seen to tumble inside the cavity, even at higher temperatures (80 °C), such motion was triggered upon addition of various coor…
Abstract This experimental work is aimed at studying the performance of rice husk flour/glass fiber reinforced high density polyethylene hybrid nanocomposites. To meet this objective, the nanoclay was compounded with high density polyethylene (HDPE), rice husk flour (RF), glass fiber, and coupling agent in an internal…
Thermal decomposition behavior was studied for Pr 6 O 11 , Pr 2 O 3 , Pr(OH 3 ), and Pr 2 (CO 3 ) 3 · x H 2 O. In the course of transformation, the intermediate species were different for each starting material, as well as the surface area and morphology of the final thermal decomposition products. During thermal deco…