Materials Literature
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We consider the classical motion of a massless quasiparticle in a magnetic field and under a weak electromagnetic radiation with the frequency $\ensuremath{\omega}$. Due to the nonparabolic linear energy dispersion, the particle responds not only at the frequency $\ensuremath{\omega}$ but generates a broad frequency s…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTA Direct Function Relationship between Isotacticity and Melting Temperature of Multiblock Stereocopolymer Poly(rac-lactide)Nobuyoshi Nomura*, Jun Hasegawa, and Ryohei IshiiView Author Information Laboratory of Polymer Chemistry, Graduate School of Bioagricultural Sciences, E1-1…
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” opt…
We propose an explanation of the peculiar linear temperature dependence of the uniform spin susceptibility chi(T) in ferropnictides. We argue that the linear in T term appears to be due to the nonanalytic temperature dependence of chi(T) in a two-dimensional Fermi liquid. We show that the prefactor of the T term is ex…
Point and small cluster defects in magnesium aluminate spinel have been studied from a first principles viewpoint. Typical point defects that occur during collision cascade simulations are cation anti-site defects, which have a small formation energy and are very stable, O and Mg split interstitials and vacancies. Iso…
Abstract Control over crystal morphology of calcium carbonate (CaCO 3 ) was investigated by simply changing the stirring speeds in the process of CaCO 3 formation. Scanning electron microscopy (SEM) and powder X‐ray diffraction (XRD) measurements explore the morphology evolution of CaCO 3 at varying stirring speeds. A…
Calcium entry through voltage-gated calcium channels has widespread cellular effects upon a host of physiological processes including neuronal excitability, muscle excitation-contraction coupling, and secretion. Using single particle analysis methods, we have determined the first three-dimensional structure, at 23 A r…
We report on the converse flexoelectric effect in two bent-core nematic liquid crystals with opposite dielectric anisotropies. The results are based on electro-optic investigations of inplane field-driven distortions in homeotropic samples (the Helfrich method). They are interpreted by an extension of the Helfrich the…
Ultrafine boron nitride (B 1.0 N 0.9 ) powders have been prepared by the spray-pyrolysis of borazine and then used to explore their potentialities to form three-dimensional boron nitride (B 1.0 N ∼1.0 ) by additive-free conventional sintering. Complete characterization of the B 1.0 N 0.9 powders by SEM, HRTEM, X-ray d…
Monoclinic crystals can be described in two settings: in the first setting the C 2 rotation axis is parallel to the z axis and in the second setting it is parallel to the y axis. Transformations of lattice parameters, Miller and zone indices, and atomic coordinates is straightforward; the situation is far more complex…
Scientific concepts regarding the benefits of controlling materials at nano-scale have been around for at least half a century. However, technological breakthroughs leading to commercially viable products began only about twenty-five years ago. Intense research and development efforts in this period have resulted in a…
Nonresonant x-ray magnetic scattering has been used to study the magnetic structure of multiferroic TbMnO3 in its ferroelectric phase. Circularly polarized x rays were combined with full polarization analysis of the scattered beam to reveal important new information on the magnetic structure of this canonical multifer…
The performance of biomaterials in contact with biological systems can be greatly affected by hydrophobic interactions at the interface between the biomaterial surface and surrounding biomolecules. Polymer brushes can function as a protective layer, preventing such interfacial hydrophobic interactions. In this paper,…
This paper reports the crystal structure and high-temperature transport properties of electron-doped perovskite manganites Ca 0.9 R 0.1 MnO 3 (R = La, Pr, ..., Yb). All the samples crystallized into a orthorhombic distorted perovskite structure (space group Pnma ). The structural distortion increases as the average A-…
Abstract Ring‐opening copolymerization of L ‐lactide (LLA) and 1,3‐trimethylene carbonate (TMC) blends with LLA/TMC feed ratios from 90/10 to 50/50 was realized at 110 or at 180 °C for various time periods, using low toxic zirconium (IV) acetylacetonate (Zr(Acac) 4 ) as initiator. The resulting copolymers exhibit diff…
Polymeric Janus particles are obtained by UV-induced selective surface grafting polymerizations and coupling reactions, in virtue of the light-absorption of photoreactive materials such as the immobilized photoinitiator and spread photoinitiator solution on the surfaces exposed to UV light and the sheltering of densel…
Vertically aligned ZnO nanorods having high optical quality were prepared by a hydrothermal−electrochemical method. The nanorods were synthesized in a Zn(NO 3 ) 2 aqueous solution on Si substrates which were coated with a platinum conducting layer and a ZnO seed layer. They possessed a single-crystal würtzite structur…
The incorporation of Janus particles into the repertoire of nanoscale building blocks adds a new level of control to supramolecular assembly. Here we demonstrate the potential for using toposelective modification to assemble new types of targeting nanoplatforms by docking the universal coupling protein, streptavidin (…
High-pressure structural properties of multiferroic perovskite-type BiFeO 3 have been investigated by high-resolution synchrotron X-ray powder diffraction at room temperature up to 9.7 GPa. BiFeO 3 shows rather complicated structural behavior. The ambient-pressure ferroelectric R 3 c phase transforms to an orthorhombi…
Association of indigo to palygorskite and sepiolite phyllosilicates, forming Maya Blue-like systems, is studied by means of electron microscopy, solid-state multinuclear magnetic resonance ( 1 H− 13 C CP MAS, 27 Al, 29 Si NMR), visible and infrared spectroscopies (ATR-FTIR, VIS), and solid state electrochemistry. Comb…