Materials Literature
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Zinc oxide (ZnO) has been widely used as a photocatalyst for solar energy conversion and treatment of organic pollutants because of its low toxicity and high photocatalytic efficiency. However, the applicability of ZnO in visible light is limited because of the wide band gap of the material, which results in low effic…
The rheology of suspensions of Brownian, or colloidal, particles (diameter $d\ensuremath{\lesssim}1\text{ }\text{ }\ensuremath{\mu}\mathrm{m}$) differs markedly from that of larger grains ($d\ensuremath{\gtrsim}50\text{ }\text{ }\ensuremath{\mu}\mathrm{m}$). Each of these two regimes has been separately studied, but t…
Highly stretchable microsupercapacitors with stable electrochemical performance are fabricated. Their excellent stretchable and electrochemical performance relies on the suspended wavy structures of graphene microribbons. This avoids the detachment and cracks of the electrode materials. In addition, it ensures the ele…
In contrast to conventional BCS superconductors, the observation that superconductivity in unconventional high-temperature materials appears in close proximity to a static antiferromagnetic phase suggests that magnetism plays a fundamental role in the microscopic origins of superconductivity. This review provides an o…
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTProgress of Polymers from Renewable Resources: Furans, Vegetable Oils, and PolysaccharidesAlessandro Gandini*†‡, Talita M. Lacerda†‡, Antonio J. F. Carvalho‡, and Eliane Trovatti†‡View Author Information† São Carlos Institute of Chemistry, University of São Paulo, Avenida Tra…
The UC2−x – carbon eutectic has been studied by laser heating and fast multi-wavelength pyrometry under inert atmosphere. The study has been carried out on three compositions, two of which close to the phase boundary of the UC2−x – C miscibility gap (with C/U atomic ratios 2 and 2.1), and one, more crucial, with a lar…
The 3-layer rhombohedral (3R) polytype of TaSe2-x Te x is known to display a superconducting transition temperature that is between 6 and 17 times higher than that of the two-layer hexagonal (2H) polytype. The remarkable difference in T c, although clearly associated with a difference in polytype, could have been due…
Several Ag–S nanoclusters where the cluster core comprises mixed metal (main component) and sulfur atoms show superatomic orbitals in the conduction band edge. However, there are no superatomic states, i.e., delocalized electrons, in the valence band, and the clusters in question can be labeled as “zerovalent”. We sho…
Nanoscale periodic patterning on insulating materials using focused-ion beam (FIB) is challenging because of charging effect, which causes pattern distortion and resolution degradation. In this paper, the authors used a charging suppression scheme using electron conducting polymer for the implementation of FIB pattern…
Abstract Catalytic activation of carbonaceous materials has recently been employed as an effective way to prepare porous graphene‐like (PG) materials with large specific surface area and excellent electrical conductivity for supercapacitor applications. In this work, the influence of the morphologies and structures of…
Nanopillars composed of a photoresponsive phthalocyanine derivative have been conveniently fabricated using a continuous silane coupling reaction on a substrate. The chemical potentials of phthalocyanine nanopillars (PNs) are precisely controlled by changing the number of phthalocyanine derivatives on the substrate. I…
Tetramantanes, and all diamondoid hydrocarbons, possess carbon frameworks that are superimposable upon the cubic diamond lattice. This characteristic is invaluable in assigning their (1)H and (13)C NMR spectra because it translates into repeating structural features, such as diamond-cage isobutyl moieties with distinc…
Structural changes of ${\mathrm{Li}}_{2}{\mathrm{C}}_{2}$ under pressure were studied by synchrotron x-ray diffraction in a diamond anvil cell under hydrostatic conditions and by using evolutionary search methodology for crystal structure prediction. We show that the high-pressure polymorph of ${\mathrm{Li}}_{2}{\math…
Abstract The microstructures and mechanical properties of Mg–7.0 wt%Y–1.0 wt%Nd–0.5 wt%Zr magnesium alloy were investigated both in as‐cast condition and after homogenization heat treatment by differential scanning calorimetry (DSC), optical microscopy (OM), X‐ray diffraction (XRD), scanning electron microscopy (SEM)…
Abstract Two defective nickel‐extended metal ‐ atom chain (EMAC) complexes were synthesized from a pyrazine‐ and naphthyridine‐containing ligand and structurally characterized. The chains consist of dinickel and trinickel units with one absent metal center, in spite of which the complexes are very stable. The magnetic…
Abstract The hydrodynamics of carriers (charge and heat motion) and phonons (heat motion) in semiconductors is analyzed in the presence of constant electric fields. This is done in terms of the so‐called higher‐order generalized hydrodynamics (HOGH), also referred to as mesoscopic hydro‐thermodynamics (MHT), that is,…
A molecular hydrogel formed by a derivative of L-valine with pendant isonicotinoyl moieties interacts selectively with protonated dopamine in the presence of related compounds such as 3-methylcatechol, and protonated or neutral phenethylamine. A two-point interaction with the gel fibers is postulated to explain the re…
Ultrasonic irradiation and solution dispersion methods were used to organize transparent worthwhile poly(vinyl chloride) (PVC) nanocomposite (NC) films which contain different amounts of modified zinc oxide nanoparticles (NP)s. First, modification of ZnO NPs was accomplished by biocompatible poly(vinyl alcohol) (PVA)…
The synthesis of pure and well dispersed lutetium aluminum garnet (LuAG) powder is crucial and important for the preparation of LuAG transparent ceramics. In this paper, high purity and well dispersed LuAG powders have been synthesized via co-precipitation method with lutetium nitrate and aluminum nitrate as raw mater…
Polymer/cholesteric liquid crystal (ChLC) nano-composites consisting of mesogenic monomers and LCs have nano-sized LC domains dispersed in an anisotropic polymer matrix. They exhibit characteristics not observed in conventional ChLCs, such as sub-millisecond and “deformation-free” electro-optic tuning of the selective…