Materials Literature
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In this letter, we analyze the quasistatic and dynamic magnetoelectric responses of multiferroic composite nanofibers consisting of both ferroelectric and ferromagnetic phases and demonstrate that the nanofibers exhibit magnetoelectric responses orders of magnitude higher than multiferroic composite thin films of simi…
A Stressed Liquid Crystal (SLC) is proposed for application as a single panel retardance element in a Fourier transform (FT) spectrometer. Volume alignment in SLCs increase the maximum retardance and subsequent FT resolution by creating greater path lengths. Here, the relationship between transmission and shear for th…
The physical properties of novel sulfur-containing biopolymers, poly[(3-hydroxybutyrate)-co-(3-mercaptopropionate)]s [P(3HB-co-3MP)s], have been investigated in detail by(1)H and (13)C NMR spectroscopy, wide-angle X-ray diffraction (WAXD) analysis, DSC, and FT-IR spectroscopy. Based on a solvent/non-solvent (chlorofor…
HRXRD is a very sensitive and non destructive technique to determine the strain in thin layer materials such as electron guides or the strain induces by the second order package of SOCs. In reciprocal space mapping (RSM), it is possible to separate the elastic component of the scattered intensity from the diffuse one.…
Femtosecond x-ray diffraction provides direct insight into the ultrafast reversible lattice dynamics of materials with a perovskite structure. Superlattice (SL) structures consisting of a sequence of nanometer-thick layer pairs allow for optically inducing a tailored stress profile that drives the lattice motions and…
The energy levels and local structures of Eu<sup>3+</sup> incorporated in the lattice and surface sites of ZnO nanocrystals\nwere investigated based on the high-resolution fluorescence spectra at 10 K. Radiative emissions from <sup>5</sup>D<sub>1</sub>\nwere first observed for Eu<…
Previous studies on the calcitic seminacre of the craniid brachiopod Novocrania have never fully resolved the crystallography of its constituent calcite crystals. With this aim, we studied the tablets forming the foliated-like and seminacre layers of this brachiopod by means of scanning electron microscopy coupled to…
Abstract A novel plasma stamp has been developed allowing selective plasma treatment and coating of flat surfaces using dielectric barrier discharges at atmospheric pressure. The stamp consists of a flat carrier material covered with photoresist. The resist is structured to form cavities in which the plasma is burning…
We present the results of imaging cylinder-forming poly(styrene- block -methyl methacrylate) diblock copolymer at temperatures high enough to show polymer domains evolving. Atomic force microscopy movies of morphological polymer evolution are analyzed to shed light on the formation of domains as well as the mechanism…
Optical response of a rare earth (RE)-doped SiO2 layer is known to deteriorate markedly at room temperature due to RE clustering. The key challenge is therefore to probe the ongoing processes at the microscopic level and the subsequent impact on the luminescence properties with increasing RE concentration. Here, we re…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTUnexpected Mechanical Properties of Functionalized Polypropylene: Tensile Test, Charpy Impact Tensile Test, DSC, and WAXD Analysis of Poly(5-hexen-1-ol-co-propylene)Yutaka Iizuka, Jun-ichi Sugiyama, and Hideaki Hagihara*View Author…
ADVERTISEMENT RETURN TO ISSUECommunication to the...Communication to the EditorNEXTLow-Bandgap Pyrazine Polymers: Ladder-Type Connectivity by Intramolecular S···N(sp2) Interactions and Hydrogen BondsYong-Hui Tian and Miklos Kertesz*View Author Information Department of Chemistry, Georgetown University, 37th & O Street…
Abstract Biodegradable copolymers of poly(lactic acid)‐block‐poly( ε ‐caprolactone) (PLA‐ b ‐PCL) were successfully prepared by two steps. In the first step, lactic acid monomer is oligomerized to low molecular weight prepolymer and copolymerized with the ( ε ‐caprolactone) diol to prepolymer, and then the molecular w…
Real-time (RT) modeling is a recognized approach to monitor advanced systems and to improve control capabilities. Applications of RT models are commonly used in the automotive and aerospace fields. Starting from existing components and models developed in TRANSEO[REF], a new approach, called the multipurpose RT approa…
Recent efforts have been devoted to design new materials with exposed metal sites for hydrogen storage. Different from bulk AlN having the wurtzite structure and fourfold coordination, the Al sites in AlN cages are unsaturated and have threefold coordination, resulting in a storage weight percentage of 4.7%, while the…
In this paper, continuous SiC fibers were embedded in an Al 6061 O matrix through ultrasonic consolidation at room temperature. The optimum embedding parameters were determined through peel tests and metallographic analysis. The influence of the embedded fiber volume fraction and base metal thickness on the interface…
The variations in magnetization and magnetic anisotropy of Ge4+/Co2+ cosubstituted cobalt ferrite with temperature were investigated for a series of compositions Co1+xGexFe2−2xO4 (0≤x≤0.4). The magnetization at 5 T and low temperature were observed to increase for all Ge/Co cosubstituted samples compared to pure CoFe2…
Magnetic nanoparticles have promising applications in spintronics, for example, to make single particle spintronic devices. The combination of widely accessible Fe and Si makes up a system of great interest and potential. Fe3Si phase is considered to be similar with Heuslar alloy, which could lead to high spin polariz…
We report results of molecular-dynamics simulations for the effects of atomic hydrogen chemisorption on the structure and deformation of single-walled carbon nanotubes. Upon hydrogenation, the nanotubes expand and the degree of expansion depends on the hydrogen coverage. There is a critical hydrogen coverage, ∼25%–30%…
This work investigates the possibility of using plasmas to treat high boiling point and viscous liquids (HBPVL) and cokes resulting as secondary streams from the refining of oil. For their revalorisation, the use of microwave (MW) induced plasmas of water is proposed, as an alternative to more conventional processes (…