Materials Literature
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Abstract La 1–X Ca X MnO 3 (X = 0.0, 0.2, 0.4, and 0.6) perovskite oxides were synthesized using the citrate gel method. Thermogravimetry and differential thermal analyses, x‐ray diffraction, scanning electron microscopy, and specific surface area results were used for characterization of the perovskite powders obtain…
Abstract The Ti–Ni–W two‐phase shape memory alloy (SMA) thin film system is presented as a prototype for new SMAs with tailorable thermal transformation hysteresis (Δ T ). The concept is to combine the SMA TiNi with almost insoluble W to create the two‐phase system (TiNi)–( β ‐W). This system behaves like a pseudobina…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTSynthesis of Fully Soluble Azomethine-Bridged Ladder-Type Poly(p-phenylenes) by Bischler−Napieralski ReactionYulan Chen, Weiguo Huang, Cuihong Li, and Zhishan Bo*View Author Information Institute of Polymer Chemistry and Physics, Co…
Using the merger of local-density approximation and dynamical mean-field theory, we show how electronic correlations increase the thermopower of ${\text{Na}}_{0.7}{\text{CoO}}_{2}$ by 200%. The newly revealed mechanism is an asymmetric shift of (quasi) electrons and holes away from the Fermi level, concurrent with an…
The Mn-doped CdS nanocrystals encapsulated by carbon (Cd 1− x Mn x S/C) were synthesized by a one-step, kinetically controlled, solid-state reaction under autogenic pressure at elevated temperatures. The ∼50 nm wurtzite Cd 1− x Mn x S core was encapsulated by a 5−11 nm disordered carbon shell, and with the increase in…
The interaction of 3,6-di-tert-butyl-o-benzoquinone (3,6-Q) with indium in toluene leads to the tris-o-semiquinolate derivative (3,6-SQ)(3)In (3,6-SQ - radical-anion of 3,6-Q). According to single-crystal X-ray diffraction analysis, this complex has a trigonal prismatic structure. Magnetic measurements revealed that t…
The fundamental framework of transformation optics describes how coordinate transformations on electromagnetic fields can be physically realized through complex material parameters. This approach includes the possibility of transforming time as well as space, but the applications of such transformations remain relativ…
Carbon hexagonal nanotubes, boron triangular nanotubes and boron a-nanotubes are a few popular nano structures. Computational researchers look at these structures as graphs where each atom is a node and an atomic bond is an edge. While researchers are discussing the differences among the three nanotubes, we identify t…
Three sheets to the wind: The self-assembly of polyaniline nanostructures is strongly dependent on single oligoanilinic nanosheets that undergo subsequent interactions, such as stacking and rolling. Imaging and spectroscopy tools detailed the stacking of nanosheets to form thicker nanoflakes and subsequently serve as…
This article reports on the use of high-resolution electron energy loss spectroscopy (HREELS) for the investigation of as-grown (hydrogen-terminated) and oxidized nanocrystalline diamond films (NCD) using chemical, physical, and electrochemical approaches. The results indicate that the nature and number of oxygen-rela…
The article reports on experimental study of catalytic properties of a new system: Pt on detonation nanodiamond (Pt/DND) for the carbon monoxide oxidation reaction. The catalytic activity of Pt/DND structures as a function of platinum content in the catalyst within the 7–80 wt % intervals was studied and the structure…
The affinity of weak polyelectrolyte coated oxide particles to the oil-water interface can be controlled by the degree of dissociation and the thickness of the weak polyelectrolyte layer. Thereby the oil in water (o/w) emulsification ability of the particles can be enabled. We selected the weak polyacid poly(methacryl…
We report a theory of the effective permeability of multilayered metamaterials containing thin ferromagnetic layers with magnetization pinned on either one or both surfaces. Because of the pinning and small film thickness, the lowest frequency magnetic resonances are due to nonuniform exchange spin waves with frequenc…
Background and aims – The non-marine diatom flora of Livingston Island (South Shetland Islands, Maritime Antarctic Region) is currently under revision. One of the genera that still needed a revision is the genus Hantzschia, quite common in terrestrial habitats of the Antarctic Region. Methods – Using both Light Micros…
Electronic structure of graphene monolayer-bilayer junction in a magnetic field is studied within an effective-mass approximation. The energy spectrum is characterized by the interface Landau levels, i.e., the locally flat bands appearing near the boundary region, resulting in a series of characteristic peaks in the l…
Photoinduced electron transfer in self-assembled via ion-pairing porphyrin–SWCNT nanohybrids has been reported. To accomplish this, two kinds of semiconducting SWCNTs of different diameters, and free-base or zinc porphyrin bearing peripheral positive or negative charges serving as light absorbing photo-active material…
In this paper, we experimentally demonstrate and compare single-exposure multiple-beam interference lithography based on conventional laser interference, evanescent wave interference, and surface plasmon interference. The proposed two-beam and four-beam interference approaches are carried out theoretically and verifie…
Background – Now and in the past, species discovery in diatoms begins, and often ends, with a survey of morphological variation to find breaks in the variation pattern that allow diagnosable entities to be defined and named. For this process to be effective, it needs to be informed by an understanding of the mechanism…
Non-Brownian particles suspended in an oscillatory shear flow are studied numerically. In these systems it is often assumed that chaos (due to the long-range nature of the hydrodynamic interaction between particles) plus noise (contact or roughness) lead to irreversible behavior. However, we demonstrate that the long-…
Abstract The effects of polysiloxane and silane‐modified SiO 2 (M‐SiO 2 ) on properties of intumescent flame retardant polypropylene (IFR‐PP) have been studied. The results demonstrate that both polysiloxane and M‐SiO 2 could effectively enhance the flame retardancy of the IFR‐PP, despite only 20 wt% loading of IFRs.…