Materials Literature
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Highly directional backward stimulated scattering has been observed from large-size-gold nanorods suspended in water, pumped with $\ensuremath{\sim}$816 nm and $\ensuremath{\sim}$10 ns laser pulses. In comparison with other known stimulated scattering effects, the newly observed effect exhibits the following features.…
Cathodic polarization curves of the O2 reduction reaction were measured by using electrodes made from typical structural materials of boiling water reactors (BWRs) to evaluate the effects of kind of material on the electrochemical corrosion potential (ECP) calculation. To estimate ECPs at any region in the BWRs on the…
The interactions between the surface of synthetic scaffolds and cells play an important role in tissue engineering applications. To improve these interactions, two strategies are generally followed: surface coating with large proteins and surface grafting with small peptides. The proteins and peptides more often used…
Purpose: To investigate the effect of salt form on the antioxidant activities of chitosan aqueous solution.Methods: The antioxidant activities of chitosan acetate (CS-acetate), chitosan hydroxybenzotriazole (CS-HOBt), chitosan thiamine pyrophosphate (CS-TPP) and chitosan ethylenediaminetetraacetic acid (CS-EDTA) solut…
Although mechanical properties, roughness, and receptor molecule expression have all been shown to influence the cellular reactivity of collagen-based biomaterials, their relative contribution, in a given system remains unclear. Here, we study films containing combinations of collagen, gelatin, and soluble and insolub…
ABSTRACT The detection of crack initiation in steel Q235, 16MnR and 20 g was carried out by metal magnetic memory (MMM) technique. Fifty specimens of welded and base metal were tested. Both MMM testing and metallographic examination were done to them when unloaded at the different phase of high‐cycle fatigue testing,…
Confinement, an effective strategy to improve the enantioselectivity in metal-catalyzed asymmetric synthesis, is a great challenge to the heterogeneous organocatalysis via hydrogen-bonding activation in that hydrogen bonding is more sensitive to the complicated spatial or chemical microenvironment in confined spaces.…
In this work, a method was developed for indirectly estimating contact angles of sessile liquid drops on convex and concave surfaces. Assuming that drops were sufficiently small that no gravitational distortion occurred, equations were derived to compute intrinsic contact angles from the radius of curvature of the sol…
The present paper reports on a novel synthesis for Au nanoparticles (AuNPs) with the use of fluorescent carbon nitride dots (CNDs) as a photocatalyst. It suggests that the resultant CND-protected AuNPs (CNDs/AuNPs) exhibit good catalytic activity toward 4-nitrophenol reduction and that the CNDs enhance the catalytic a…
Abstract Six dinuclear complexes, [Ln2(hfac)6(H2O)2(L)] [Ln = Y (1) and Er (2)], [Yb2(hfac)6(L)] (3), [Ln2(tta)6(L)]·3CH2Cl2 [Ln = Y (4) and Er (5)] and [Yb2(tta)6(L)]·2C6H14 (6), have been prepared by coordination reactions between the [Ln(β‐diketonate)3]·2H2O (Ln = YIII, ErIII and YbIII; β‐diketonate = hfac– or tta–…
Hydrogen diffusion in monoclinic and tetragonal zirconium oxides has been studied by electronic state calculations. In both structures, the optimized hydrogen site lies near the center of a distorted fluorite structure. The activation energy was calculated to be 120–200 kJ/mol, which is similar to experimentally measu…
Ein SPR-Biosensor wurde entwickelt, der hochstabile Gold-geschützte Silber-Nanoplättchen (NP) als Verstärker enthält (siehe Bild). Erhöhte Effizienz wird durch die Ablagerung eines dünnen und gleichmäßigen Goldfilms auf der Silberoberfläche erreicht, welcher störenden galvanischen Austausch minimiert und die starke Ob…
Molybdenum oxide (MoO3) films were prepared by magnetron sputtering using an Mo target. The films were sputtered in the reactive atmosphere of an argon–oxygen gas mixture under various substrate temperatures, Ts, and oxygen partial pressures, p(O2). The effects of the growth conditions on the microstructure were exami…
Abstract The controlled deposition of electrospun nanofibers at the micro‐scale is studied. Several collectors with microscopic patterns are prepared using photolithography. Nanofiber deposition is influenced by the geometry, the size, and the distance between micro‐patterns. Within certain conditions, membranes with…
Various supramolecular systems can be used as drug carriers to alter physicochemical and pharmacokinetic characteristics of drugs. Representative supramolecular systems that can be used for this purpose include surfactant/polymer micelles, (micro)emulsions, liposomes, layer-by-layer assemblies, and various molecular c…
Based on the symmetry properties of the graphene lattice, we derive the effective Hamiltonian of graphene under spatially nonuniform acoustic and optical strains. Comparison with the published results of the first-principles calculations allows us to determine the values of some Hamiltonian parameters, and suggests th…
Abstract A series of novel injectable and photo‐crosslinkable poly(propylene fumarate) (PPF)‐co‐polyhedral oligomeric silsesquioxane (POSS) copolymers are synthesized via two‐step polycondensation to improve both stiffness and toughness and to promote biological performance of bone tissue engineering scaffolds. The vi…
We theoretically investigate the magnetic response of two-dimensional arrays of superconducting strips, which are regarded as essential structures of dc magnetic metamaterials. We analytically obtain local distributions of the magnetic field for the ideal complete shielding state (i.e., $\ensuremath{\Lambda}/w\ensurem…
Abstract Dynamic and transient shear start‐up flow experiments along with TEM, WAXS, and SEM analyses are performed on PP/PET blends and nanocomposites. The TEM results along with a theoretical analysis based on a thermodynamic model reveal that the clay particles are mainly localized in the PET phase. The localizatio…
Ac susceptibility and static magnetization measurements were performed in the nearly optimally doped LaFeAsO${}_{0.9}$F${}_{0.1}$ and CeFeAsO${}_{0.92}$F${}_{0.08}$ superconductors, complementing earlier results on SmFeAsO${}_{0.8}$F${}_{0.2}$ [Phys. Rev. B 83, 174514 (2011)]. The magnetic field-temperature phase diag…