Materials Literature
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CNN News: N-dotierte Kohlenstoffnanonadeln (CNNs) entstehen bei der Selbstorganisation von Kern-Schale-Nanostrukturen und -Nanoreaktoren um Cellulosenanonadeln mit anschließender Graphitisierung. Die Nanonadeln (siehe Bild) sind durch gut organisierte graphitische Multischichten und große Anteile N-dotierter Kantenebe…
We model stabilization of clusters and lattices of spherical particles with dominant electric and magnetic dipolar coupling, and weak van der Waals coupling. Our analytical results demonstrate that dipolar coupling can stabilize nanoparticle clusters with planar, tubular, Möbius, and other arrangements. We also explai…
Abstract Coupling effects among mechanical, electrical and magnetic parameters in thin film structures including ferroic thin films provide exciting opportunity for creating device functionalities. For thin films deposited on a substrate, their mechanical stress and microstructure are usually determined by the composi…
This study investigated the effect of filler loading and coupling agent contents on the densities and mechanical properties of injection-molded foamed biocomposites. Biocomposite pellets were manufactured using wheat straw flour, maleic anhydrite grafted polyethylene (MAPE), paraffin wax, and high-density polyethylene…
Despite numerous investigations, grain boundary (GB) embrittlement of metallic structural materials is a poorly understood fundamental phenomenon in materials science. One of the well-known examples is that minute traces of sodium induce an embrittlement in aluminum alloys that results in drastic failure and limits th…
In cross nucleation, an early nucleating crystalline polymorph (A) nucleates another crystalline polymorph (B) of higher or lower thermodynamic stability without undergoing a polymorphic transformation. Although this phenomenon was recently observed in the crystallization process of several small molecules, there has…
The authors report results of spectroscopic ellipsometry (SE) measurements in the near-IR, visible, and near-UV spectral ranges using a Woollam dual rotating-compensator ellipsometer, analyzing data in terms of both epitaxial graphene and interface contributions. The SiC samples were cleaned by standard methods of CMP…
Bulk ceramic combinatorial libraries were produced via a novel, high-throughput (HT) process, in the form of polycrystalline strips with a gradient composition along the length of the library. Step gradient ceramic composite libraries with 10 mol % steps of SrFe12O19-BaTiO3 (SrM-BT) were made and characterized using H…
A family of hybrid mesoporous materials with high temperature stability was obtained by the suitable covalent combination of two types of siloxane precursors. Specifically, cubic T(8) polyhedral oligomeric (POSS) and aryl bridged silsesquioxane monomers (1,4-bis(triethoxysilyl)benzene, BTEB) play the role of nanobuild…
Due to the tremendous growth in applications for fiber laser in medical science, sensor solution, and light detection and ranging system at 1.8 to 2-$\mu{\rm m}$region, more research efforts have been directed toward developing highly efficient broadband fiber amplifiers in this range. In order to amplify this region,…
An improved method to simulate the ion-flow field generated from the corona discharge on HVDC transmission lines is proposed. To remove the oscillations in simulation of charge conservation law, an upwind weighting function is adopted in the finite-element method. The Poisson's equation and the charge conservation law…
α- MnO 2 electrode materials with sphere-, rod- and flower-like nanostructures were for the first time fabricated by a redox reaction between KMnO 4 and NaHSO 3 in chemical bath. Crystal structure and morphology of the as-crystallized samples were characterized by X-ray diffraction and scanning electron microscopy. Th…
Graphene is believed to be an excellent candidate material for next-generation electronic devices. However, one needs to take into account the nontrivial effect of metal contacts in order to precisely control the charge injection and extraction processes. We have performed transport calculations for graphene junctions…
The aim of this study is to report on the performance of a novel non-phosphorus antiscalant, acrylic acid (AA)-allylpolyethoxy carboxylate (APEC), being developed for calcium-sulfate scale inhibition in industrial water systems. The performance of AA-APEC on calcium-sulfate scale inhibition was compared with that of t…
The use of single-walled carbon nanotubes (SWCNTs) in fabricating macroscopic devices requires addressing the challenges of nanotube individualization and organization in the desired functional architectures. Previous success in depositing bare SWCNTs from chlorosulfonic acid onto silicon oxide microporous and mesopor…
Es bleibt beim Würfel: MnS-Mikrokästchen, die als Anodenmaterial für Lithiumionenbatterien fungieren können, wurden durch ein einfaches Sulfidierungsverfahren mit H2S-Gas synthetisiert. Die intrinsisch kubische Kristallstruktur und die nahezu kubische Form der Vorstufe MnCO3 unterstützen die Bildung der Einkristalle.…
This report demonstrates an in vitro method for screening wound dressing candidates that can minimize the use of animals for developing better methods for wound care. The development of materials and formulations for wound dressings, an important application of biomaterials, is laboriously and ethically challenging be…
We present a first-principles density functional theory approach to study the electron-phonon coupling of semiconductor nanoclusters using the self-consistent change of the potential caused by a frozen-phonon distortion of the lattice. This approach has been examined by comparing the results with ab initio linear-resp…
Purpose This paper aims to investigate the physical, chemical and physicochemical characteristics of rice husk on alkaline treatment. Design/methodology/approach Rice husk (RM) was alkaline treated to produce soluble (SR) and insoluble residues (IR). Each fraction was characterized and soluble fraction was used to pro…
The crystallization kinetics and crystallization-induced morphological formation of an asymmetric double-crystalline block copolymer, syndiotactic polypropylene- block -poly(ε-caprolactone) (sPP- b -PCL), have been investigated by time-resolved simultaneous small-angle and wide-angle X-ray scattering (SAXS/WAXS). The…