Materials Literature
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Chemical deposition methods like MOD and MOCVD are promising approaches for coated conductors (CCs) due to their reduced cost and easy scaling. High quality La 2 Zr 2 O 7 (LZO) buffer layers were prepared by MOD on Ni–5 at.% W (NiW) RABiTS and subsequent YBCO layers (450–800 nm thick) were deposited by pulsed injectio…
Abstract Banana fiber, one of the world's most important natural fiber obtained from the bast of the plant Musa Saptentum Linn, is available in plenty in Kerala. Without reinforcement, polyester resins are hard and brittle and cannot be used for structural applications. In the present study, short banana fiber‐reinfor…
Hypoxis hemerocallidea Fisch. & C.A. Mey (Hypoxidaceae) is an important plant species in traditional medicine in southern Africa. The use of the corms of hypoxis, commonly known as “African potato” is so popular that the species is threatened by over-harvesting. This study was aimed at comparing the chemical compositi…
The thermal stability of thermoelectric Zn4Sb3 has been investigated on samples produced by a new zone-melting technique, as well as by the conventional quench method. The multitemperature synchrotron powder diffraction data reveal that while conventionally synthesized, Zn4Sb3 samples have almost 40% degradation in th…
Lord of the golden rings: A giant, crown-like Au36 ring aggregate with continuous metal–metal contacts (see picture; gold(I) centers are in ball and stick representation) is formed by an AuI⋅⋅⋅AuI bonding interaction directed self-assembly.
Composite biomaterials incorporating fibroblast cells, collagen Type I, fibrin, and 2 wt % carboxylated SWNT were created, and their properties were compared with similar control constructs without SWNT. Alignment of the matrix was stimulated by application of 8% cyclic strain for three 12-h periods over three days. A…
Photonic crystal nanocavities are fabricated in silicon membranes covered by thermally annealed silicon-rich nitride films with Erbium-doped silicon nanocrystals. Silicon nitride films were deposited by sputtering on top of silicon on insulator wafers. The nanocavities were carefully designed in order to enhance emiss…
The influence of epitaxial strain, in the form of tetragonal distortions, on the magnetic and magnetotransport properties of La0.67Sr0.33MnO3 thin films was studied. The tetragonal distortion (c∕a ratio) was modulated through the choice of the substrate, ranging from c∕a=1.007 on (001)-oriented (LaAlO3)0.3(Sr2AlTaO6)0…
The corrosion inhibition of mild steel in 1 M H 2 SO 4 in the presence of polyvinylpyrollidone (PVP) and polyacrylamide (PA) as inhibitors at 30–60°C was studied using gravimetric and gasometric techniques. The inhibition efficiency (1%) increased with increase in concentration of the inhibitors. Increase in temperatu…
Data from comprehensive thermomechanical tests of shape memory polymers are reported, with specimens tested up to 75% strain and between 30—120°C temperatures. The data is analyzed and key observations are drawn. The stress/strain behavior during loading at temperatures above glass transition for the Veriflex TM shape…
An efficient method is presented for simulating spin polarization and transport through zigzag-edge graphene nanoribbons in the presence of transverse fields. The approach is used to examine two graphene nanoribbon spintronic devices. One device operates as a spin filter whle the other operates as a spin field-effect…
Abstract Composites of polylactide (PLA, 100–60 wt%) and wood flour (0–40 wt%) were prepared to assess the effects of wood filler content on the mechanical, chemical, thermal, and morphological properties of the composites. The polysaccharide chitosan (0–10 wt%) was added as a potential coupling agent for the PLA‐wood…
In this letter, we report an observation of room temperature electrical oscillation in vanadium dioxide (VO2), a representative strongly correlated material showing a metal-insulator transition. An electric circuit for the oscillation is simply composed of a voltage source and two-terminal VO2 thin film device seriall…
The present research investigates the effect of photoinduced grafting reaction on the bulk properties of melt processed poly(L-lactic acid) (PLA)-poly[(3-hydroxybutyrate)-co-(3-hydroxyhexanoate)] (PHBHHx) blend films. PLA-PHBHHx blend films, comprising 10 wt % PHBHHx showed a remarkable toughness improvement. From dyn…
Preface 1. PROSTAGLANDINS, PEPTIDOMIMETIC COMPOUNDS, AND RETINOIDS. 1.1 Prostaglandnis. 1.2 Peptidonimetic Compounds. 1.3 Retinoids. 1.4 A Miscellaneous Drug. References. 2. DRUG BASED ON A SUBSTITUTED BENZENE RING 2.1 Arylethanolamines. 2.2 Aryloxypropanolamines. 2.3 Arylsulfonic Acid Derivatives. 2.4 Arylacetic and…
Sensing Device: A pyrenecyclodextrin-decorated single-walled carbon nanotube field-effect transistor acts as a chemical sensor to detect organic molecules selectively in aqueous solution, based on their molecular recognition with β-cyclodextrin.
Nanostructured ZnO thin films have been deposited using a successive chemical solution deposition method. The structural, morphological, electrical and sensing properties of the films were studied for different concentrations of Al-dopant and were analyzed as a function of rapid photothermal processing temperatures. T…
Dreieckige Donuts: Ab-initio-Rechnungen auf hohem Niveau ergaben für den Grundzustand dreieckiger Dysprosiumkomplexe eine ringförmige Anordnung der lokalen Magnetisierungen an den Metallpositionen (siehe Bild). Diese Anordnung liefert eine Erklärung für die ungewöhnlichen magnetischen Eigenschaften der Komplexe.
We present a novel approach to spin manipulation in atomic-scale nanostructures. Our ab initio calculations clearly demonstrate that it is possible to tune magnetic properties of sub-nanometer structures by adjusting the geometry of the system. By the example of two surface-based systems we demonstrate that (i) the ma…
The state of the art ab initio calculations reveal the effect of a scanning tunnelling microscopy tip on magnetic properties and conductance of a benzene-adatom sandwich on Cu(001). We concentrate on a benzene-Co system interacting with a Cr tip. Our studies give a clear evidence that magnetism and conductance in mole…