Materials Literature
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Here, we investigate a hybrid carbon nanostructure, which comprises two single-open host nanotubes of the same radius and joined by another single-open nanotube, which is centrally located between the host nanotubes but has a smaller radius. A metallofullerene is then enclosed inside the structure to represent a bit i…
The hot melt reactive extrusion of blends of chitosan and poly(acrylic acid) (PAA) was carried out without any process additives such as organic solvent or plasticizer. The maximum amount of chitosan in the blend during the extrusion process was kept at 40 wt%, since the melt viscosity of a system containing 50 wt% of…
Abstract A series of copolyimide/SiO 2 hollow sphere thin films were prepared successfully based on bis[3,5‐dimethyl‐4‐(4‐aminophenoxy)phenyl]methane and 9,9‐bis(4‐(4‐aminophenoxy)phenyl)fluorene (molar ratio = 3 : 1) as diamine, and 4,4′‐(4,4′‐isopropylidenediphenoxy)bis(phthalic anhydride) as dianhydride, with diffe…
Abstract The miscibility and some physicomechanical characteristics of chlorinated polyethylene rubber (CPE) and nitrile rubber (NBR) blends have been investigated. Calculation of the heat of mixing, differential scanning calorimetry, and scanning electron microscopy analysis showed that CPE was miscible with NBR in a…
KNbO3 (KN) and K1−xNaxNbO3 (KNN) anisometric crystals have been produced by a chemical conversion route. Crystals of the compounds K4Nb6O17, K2Nb4O11 and KNb3O8 with high aspect ratio were first grown in molten KCl. The non-perovskite compounds were further converted to KN or KNN perovskites by reaction with K2CO3 or…
The role of metal interlayers in maintaining adhesion during the direct fabrication of anodic aluminum oxide (AAO) with high -aspect ratio pores on tin-doped indium oxide (ITO) is studied. Chromium and titanium interlayers can maintain adhesion while anodization is conducted in either sulfuric, oxalic, or phosphoric a…
A chitosan/marine-originated collagen composite has been developed. This composite gel was characterized and its biocompatibility, as well as an inflammatory reaction, was observed. The chitosan gel including N-3-carboxypropanoil-6-O-(carboxymethyl) chitosan of 3 mol%, 6-O-(carboxymethyl) chitosan of 62 mol% and 6-O-(…
Fluorine-doped tin oxide (FTO) films have been deposited by pulsed DC magnetron sputtering with an Sn target. Various ratios of CF4/O2 gas were injected to enhance the optical and electrical properties of the films. The extinction coefficient was lower than 1.5×10(-3) in the range from 400 to 800 nm when the CF4O2 rat…
The initial use of pyridine-2,6-diamidoxime (pdamoH(2)) in metal cluster and polymer chemistry is described. Depending on the reaction conditions employed, the Cu(ClO(4))(2)·6H(2)O/pdamoH(2) system has provided access to the dinuclear compound [Cu(2)(pdamoH)(2)(ClO(4))(2)(MeOH)(2)] (1), the chain-like polymer [Cu(2)(p…
A novel route to the preparation of luminescent silica nanoparticles and coloration for living cells was demonstrated in this article. A europium-substituted polyoxometalate was encapsulated by a hydroxyl-group-terminated double-chain quaternary ammonium cation through an ion replacement process, yielding an organic-i…
In this paper, a new organic insulation system is proposed to improve the surface-flashover performance in vacuum by inserting permittivity-gradient multilayer organic composite material between the electrode and the dielectric. Simulation technique was used to calculate and analyze the electric-field distribution of…
Abstract Poly( L ‐lactide)/multiwalled carbon nanotubes (PLLA/MWCNTs) nanocomposite recently attracts much attention because of its excellent comprehensive properties including improved thermostability, tensile strength, and conductivity. However, the nanocomposite exhibits similar brittleness compared with unmodified…
We report the optical quadratic nonlinearity of hollow gold nanospheres (HGNs). The two-photon Rayleigh scattering (TPRS) technique has been used to measure the first hyperpolarizabilities (β) of the nanospheres. The measured β values are extremely large for the HGNs and, more interestingly, larger than similar-sized…
Abstract We summarized our recent optical studies on perovskite semiconductor SrTiO 3 crystals. Photocarrier recombination dynamics of undoped, electron‐doped, and vacancy‐doped SrTiO 3 crystals were studied by photoluminescence (PL) and transient absorption (TA) spectroscopy. By high‐density photoexcitation and elect…
Spaghetti sensor: A pyromellitic diimide based macrocycle selectively gelates N,N-dimethylaniline to form a nanofibril structure. Removal of N,N-dimethylaniline forms channel type empty cavities constructed from stacked molecules of the macrocycle in the nanofiber. By taking advantage of host ability of 1, the nanofib…
The paper develops an efficient computational method for establishing equivalent characteristics of magnetic joints of transformer cores, with special emphasis on step-lap design. By introducing an equivalent material, the method allows the real three-dimensional structure of the laminated thin sheets to be treated co…
Monodispersed mesoporous SBA-15 materials with hexagonal lamelliform, hexagonal prism and snow-like morphologies were controllably synthesized by a facile hydrothermal method. The novel morphology SBA-15 materials were then coated on the quartz crystal micro-balances to construct highly stable and sensitive humidity s…
Nur mit Oxid: Ce0.8Ni0.2O2−y ist ein ausgezeichneter Katalysator für die Dampfreformierung von Ethanol (siehe Diagramm). Metall-Oxid-Wechselwirkungen beeinflussen die elektronischen Eigenschaften kleiner Nickelpartikel, die unter den Reaktionsbedingungen am Katalysator vorliegen, und unterdrücken die Methanbildung. In…
An applied field generated by centrifugation induced nematic order in colloidal rods of aspect ratio, r, varying from 3.6 to 8. The dependence of the order parameter, S, on dimensionless applied field strength was quantified by identifying the directors of the micron-sized poly(methyl methacrylate) rods in the suspens…
Abstract Silicone–epoxy (SiE) resins were synthesized through the hydrolytic condensation of 2‐(3,4‐epoxycyclohexylethyl) methyldiethoxysilane (EMDS) and the cohydrolytic condensation of EMDS with dimethyldiethoxysilane. Structural characterization was carried out by 1 H‐NMR, 29 Si‐NMR, and mass spectrometry analysis;…