Materials Literature
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In recent years, researchers have proposed transformerless solutions for connecting renewable-energy power plants to the grid. Apart from lack of efficiency and increased cost and weight of the transformer, one of the reasons is the dc input current that causes transformer saturation. The purpose of this paper is the…
Contacts between aromatic surfaces and saccharide CH groups are common motifs in natural carbohydrate recognition. These CH-π interactions are modeled in "synthetic lectins" which employ oligophenyl units as apolar surfaces. Here we report the synthesis and study of new synthetic lectins with fluoro- and hydroxy-subst…
In situ tensile tests in a transmission electron microscope were carried out on a ``Gum Metal'' $\ensuremath{\beta}$-titanium alloy. Conventional dislocation slip was observed to be the only mechanism occurring during the plastic deformation. The low mobility of screw dislocations was shown to be due to their core str…
A salicylaldehyde azine-based derivative, which exhibited switchable solid-state fluorescence in response to external thermal and mechanical grinding stimulus, was reported in this study. Diffuse reflectance solid-state spectroscopy, fluorescence spectroscopy, solid-state 13 C and 1 H NMR spectroscopy, single crystal…
Sehen um zu glauben: Die optische chirale Erkennung von (R)- und (S)-Binap gelang mithilfe des enantioselektiven Kollabierens von Metallogelen, die mit neuartigen Gelatoren aus Platin und Pinzettenliganden mit aromatischem, Linker- und Steroidteil hergestellt wurden. Van-der-Waals-Wechselwirkungen, π-Stapelung und Met…
Superoleophobic surfaces were demonstrated on perfluorosilane-rendered titania (TiO(2))/single-walled carbon nanotube (SWNT) composite coatings. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) observations revealed that SWNTs play a key role in the formation of overhanging structures and…
Twinning stress or mechanical hysteresis associated with the twin boundary motion is one of the most essential parameters which determine the actuating performance of magnetic shape memory alloys. Recent effort at AdaptaMat Ltd. to decrease the twinning stress resulted in a consistent production of Ni-Mn-Ga magnetic s…
The CCl(4) gel phases of a series of low-molecular-mass organogelators, (R)-18-(n-alkylamino)octadecan-7-ols (HSN-n, where n = 0-5, 18 is the alkyl chain length), appear to be unprecedented in that the fibrillar networks of some of the homologues undergo thermally reversible, gel-to-gel phase transitions, and some of…
A ballistic transport model based on electron and phonon band structures has been implemented to evaluate the thermoelectric properties of kinked AA/ZZ-graphene nanoribbons (GNRs) connected by two armchair GNRs or zigzag GNR segments with an angle of 120\ifmmode^\circ\else\textdegree\fi{}, as well as hybridized struct…
Nanoparticles are increasingly used in consumer and structural polymeric products to enhance a variety of properties. Under the influence of environmental factors (e.g., ultraviolet, moisture, temperature) and mechanical actions (e.g., scratching, vibrations, abrasion), nanoparticles could potentially release from the…
Abstract This review presents techniques for the computation of multi‐electron integrals over Cartesian and solid‐harmonic Gaussian‐type orbitals as used in standard electronic‐structure investigations. The review goes through the basics for one‐ and two‐electron integrals, discuss details of various two‐electron inte…
Bagasse is a by-product of the sugarcane milling process, and it also is an important fuel resource for that industry. In this study an attempt has been made to utilize this by-product to prepare a composite using epoxy resin. The fibers surface was modified by alkali treatment with 5% NaOH solution for 0, 2, 4 and 6…
A silanization technique of hydrophobic quantum dots (QDs) was applied to SiO(2)-coated CdSe/Cd(x)Zn(1-x)S QDs to precisely control the SiO(2) shell thickness and retain the original high photoluminescence (PL) properties of the QDs. Hydrophobic CdSe/Cd(x)Zn(1-x)S core-shell QDs with PL peak wavelengths of 600 and 652…
Abstract Glycidyl methacrylate functionalized acrylonitrile–butadiene–styrene (ABS‐ g ‐GMA) particles were prepared and used to toughen polylactide (PLA). The characteristic absorption at 1728 cm −1 of the Fourier transform infrared spectra indicated that glycidyl methacrylate (GMA) was grafted onto the polybutadiene…
Abstract Commercial purity aluminium at true strains ε=2∼5.5 was annealed in a wide temperature range (from room temperature to 220°C), and the evolution of microstructure was characterized using transmission electron microscopy (TEM) and electron backscattered diffraction (EBSD) techniques. Triple junctions in an ult…
Nanoparticles (NP) are introduced in a growing number of commercial products and their production may lead to their release in the environment. Plants may be a potential entry point for NP in the food chain. Up to now, results describing NP phytotoxical effects and plant accumulation are scarce and contradictory. To i…
Mesoporous Bragg reflectors are a promising materials platform for photovoltaics, light emission, and sensing. A fast and versatile fabrication route that relies on the self-assembly of the block copolymer poly(isoprene-b-ethylene oxide) in combination with simple sol-gel chemistry is reported. The method allows exte…
We analyzed the morphogical features of the centric diatom Skeletonema potamos (Weber) Hasle from Patos Lagoon, southern Brazil, using light and scanning electron microscopy. We discuss the abundance and dis- tribution of the species along the salinity gradient in the lagoon. Samples from the water surface were taken…
Synthetic asymmetrical systems, Janus particles and patchy particles, are capable of undergoing hierarchical assembly processes that mimic those of Nature, to serve as switchable devices, optical probes, phase-transfer catalysts, and multifunctional drug carriers, each of which benefits from opposing surface patterns…
Abstract Recently, the production of polymers loaded with inorganic nanomaterials has been one of the most economical techniques playing a special role in improving the physical and mechanical properties of nanocomposites. Rubbers loaded with different concentrations of carbon nanoparticles (CNPs) were synthesized. Th…