Materials Literature
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A series of compounds containing boron, nitrogen, and hydrogen atoms, namely, LiBH 4 ·NH 3, Sr(NH 2 BH 3 ) 2, and Li 2 Al(BH 4 ) 5 ·6NH 3, were synthesized recently, and found to be promising for hydrogen storage. We have conducted the corresponding ab initio calculations using density functional theory and analyzed t…
Abstract A novel set of chiral self‐assembling discotic molecules has been prepared based on two previously studied self‐assembling C 3 ‐discotic systems, namely alkyl substituted benzene‐1,3,5‐tricarboxamides (alkyl‐BTAs) and 3,3′‐bis(acylamino)‐2,2′‐bipyridine substituted BTAs (BiPy‐BTAs). By replacing one of the th…
It is shown that in the vicinity of magnetoelectric to multiferroic phase transitions the magnetoelectric coefficient α acquires gigantic values.
The influence of fiber surface treatment on the mechanical properties of coir reinforced polypropylene (PP) composites was studied. Coir was first treated chemically with sodium periodate and then with urea in order to improve the compatibility between the fiber and the PP matrix. The mechanical properties of treated…
Semi-crystalline poly(ether ketone)s are important high-temperature engineering thermoplastics, but are difficult to characterize at the molecular level because of their insolubility in conventional organic solvents. Here we report that polymers of this type, including PEEK, react cleanly at high temperatures with low…
Isotope effects (IEs) are essential in determining the pairing mechanism in superconductors. Whereas for Bardeen–Cooper–Schrieffer (BCS)-type superconductors, a clear consensus about IE exists, this is unknown in multiband superconductors (MBSs). We demonstrate here that for MBSs the IEs on the superconducting transit…
The high-temperature phase transition of single crystals of L-asparagine monohydrate was investigated by X-ray diffraction in association with Rietveld refinement and dilatometer measurements as a function of annealing time. The X-ray results showed that, for samples annealed at 343 K (or even 333 K) for 5 h, the expe…
We report on the growth of ZnO nanorods (NRs) by a quick single-step mechanochemical process and investigated the milling time dependence on the structural and optical properties of the ZnO NRs. Mechanochemical reactions are carried out in a planetary ball mill for the time durations ranging from 30 min to 5 h. XRD an…
Taxonomic evaluation of Polygonum multiflorum Thunb. var. angulatum S. Y. Liu (Polygonaceae) reveals that a new combination in Fallopia Adans. is necessary, and the name F. multiflora (Thunb.) Haraldson var. angulata (S. Y. Liu) H. J. Yan, Z. J. Fang & Shi Xiao Yu is proposed. The new variety differs from the typical…
In this paper, we present our investigations of the effects of vertical-sidewall roughness (VSR) on guided-mode resonance (GMR) filters made of subwavelength grating for applications to ultrasensitive biosensors operated under IR illumination. We designed the spectral FWHM of the grating filter to be as narrow as poss…
The study of band-edge lasing from dye-doped chiral nematic liquid crystals has thus far been largely restricted to visible wavelengths. In this paper, a wide range of commercially available laser dyes are examined for their suitability as infrared emitters within a chiral nematic host. Problems such as poor solubilit…
We have obtained a series of single- and multilayered extended chain polyethylene (PE) crystals resting on a silicon dioxide substrate by crystallizing a low molar mass oligomer fraction of low polydispersity from an ultrathin film. Crystal thicknesses were determined from the height histograms of atomic force microsc…
Abstract The complex metal oxides Mn 2 ASbO 6 (A = In, Sc) with a corundum‐related structure A 3 BO 6 were prepared as polycrystalline powders by a solid‐state reaction route. Their crystal structure and magnetic properties were investigated by using a combination of X‐ray and neutron powder diffraction, electron micr…
A new methodology is proposed for structure refinement using powder diffraction data, from which models for particle statistics and any other statistical errors can be formally optimized. This method is nothing but a straightforward implementation of the maximum-likelihood method, extended to the error estimation. Str…
Because noncentrosymmetric [Sb7S8Br2](AlCl4)3 single crystals possess a wide optical transparency region, it is a promising material for nonlinear optical applications. We have calculated the dispersion of linear and nonlinear optical susceptibilities including optical second harmonic generation (SHG) using a relaxed…
Most melt-crystallized polymers present a lamellar nanostructure of alternating crystalline and amorphous lamellae which is coherent enough to display a broad interference peak in small-angle X-ray scattering experiments (SAXS). Nascent semi-crystalline polymers, on the other hand, though highly crystalline, hardly sh…
This paper discusses the growth atmosphere, condensing species, and nucleation conditions relevant to vapor phase transport growth of ZnO nanostructures, including the molecular parameters and thermodynamics of the gas phase ZnO molecule and its importance compared to atomic Zn and molecular O 2 . The partial pressure…
The encapsulation of guest molecules within polymeric hollow nano- or microscale structures is a rapidly developing field of interdisciplinary research due to a variety of applications ranging from drug delivery and sensor fabrication to nanoscale synthesis and bioinspired mineralization. We report on the encapsulatio…
The use of mussel adhesive proteins (MAPs) as a surface coating for cell adhesion has been suggested due to their unique properties of biocompatibility and effective adhesion on diverse inorganic and organic surfaces. The surface functionalization of scaffolds or implants using extracellular matrix (ECM) molecules is…
Three dimensional (3D) spacer fabrics are constructed from two dimensional (2D) woven fabrics connected by 2D woven crosslink fabrics using thermoplastic high performance hybrid yarns. Spacer fabrics present great potential in the efficient production of fiber reinforced plastic composites with adjustable mechanical p…