Materials Literature
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We study a new type of one-dimensional chiral states that can be created in bilayer graphene (BLG) by electrostatic lateral confinement. These states appear on the domain walls separating insulating regions experiencing the opposite gating polarity. While the states are similar to conventional solitonic zero modes, th…
Polished W discs exposed to pure He plasma in the PISCES-B linear-divertor-plasma simulator at 1120 and 1320 K are found to develop deeply nanostructured surface layers consisting of a conglomerate of amorphous ‘nanorods’. The growth of the thickness of the nanostructured layer is explored for exposure times spanning…
We report the first measurements of d15, which relate torsion to an applied field, in the high magnetostriction Galfenol alloys Fe100−xGax (x=12.5,15,18.4,22), Fe50Co50, and Fe81Al19. Measurements were performed on highly textured polycrystalline 6.4×50.8mm2 rods by simultaneously applying a longitudinal magnetic fiel…
Abstract Styrene–butadiene–styrene (SBS) was grafted with dibutyl maleate (DBM), methacrylic acid (MAA), or maleic anhydride (MAH) by 60 Co γ‐rays. The grafted SBS was blended with polyamide 6 (PA6). The compatibility of the PA6/SBS blends was studied with scanning electron microscopy and rheological measurements. The…
Diamondlike amorphous carbon films have been deposited on silicon and quartz substrates by laser ablation of graphite using 120 fs pulses from an amplified Ti:sapphire laser operating at 800 nm. Ultraviolet/visible (UV/VIS) and micro-Raman spectra of these materials have shown that the sp3-bonded carbon fraction in th…
Fe–Pt exchange-spring film magnets composed of both order and disorder phases were fabricated by the sputtering method followed by an annealing process, and an increase in thickness was achieved up to 7μm. The remanence value for the films with the thickness ranging from 1.7to7μm showed approximately 0.9T which exceed…
Oxidation kinetics of Nd–Fe–B permanent magnets prepared by both spark plasma sintering (SPS) and conventional sintering techniques has been studied at elevated temperature in dry air environment. Compared with the conventional sintered magnet, the SPS magnet possesses much lower oxidation rate, which leads to less re…
Effects of the hydrostatic pressure on the magnetic and structural properties are investigated in a charge-transfer material, $\mathrm{Cs}[\mathrm{Co}{(3\text{\ensuremath{-}}\mathrm{C}\mathrm{N}\mathrm{py})}_{2}][\mathrm{W}{(\mathrm{C}\mathrm{N})}_{8}]{\mathrm{H}}_{2}\mathrm{O}$ $(\mathrm{C}\mathrm{N}\mathrm{py}=\text…
La 0.9 Hf 0.1 Mn O 3 thin films with different thicknesses are epitaxially grown on SrTiO3 (100) single-crystal substrates by using pulsed laser deposition. X-ray diffraction shows that these thin films are of single phase and highly epitaxial. The influence of film thickness on the resistivity and metal-insulator tra…
The morphology and rheology of polyethylene-octene elastomer (POE)/crosslinked starch (CS) immiscible blends with various amounts of compatibilizer were experimentally examined. A graft copolymer, POE-g-MAH, acting as the compatibilizer, was used to modify the interface of the blend. The particle radius in the POE/CS…
Here we extend the research of the $(R,\mathrm{Ca}){\mathrm{MnO}}_{3}$ perovskites to the smallest-$R$ end member $(\mathrm{Lu},\mathrm{Ca}){\mathrm{MnO}}_{3}$. Magnetic and magnetotransport properties of the $({\mathrm{Lu}}_{1\ensuremath{-}x}{\mathrm{Ca}}_{x}){\mathrm{MnO}}_{3}$ system are systematically investigated…
Abstract Poly(methyl methacrylate) doped with CuCl 2 was prepared and its electron spin resonance (ESR) spectra and optical properties were studied. The ESR spectra can be accounted for by the presence of two radicals: R a and R b . FTIR spectroscopy reveals that there is no main difference of the spectra due to the a…
We briefly review systematic and comprehensive studies on several chlorine-substituted bent-core liquid crystal materials in their nematic phases. The results, in comparison to rod-shaped molecules, are both extraordinary and technologically significant. Specifically: a) Electrohydrodynamic instabilities provide uniqu…
Abstract This article is focused on the phase structure development in immiscible polymer blends during melt mixing. Nonuniformity of the phase structure, i.e., the coexistence of areas containing particles with markedly different size distribution, was detected in quenched and compression molded samples of a number o…
We demonstrated transmissive- and reflective-type Fresnel lenses based on dye-doped liquid crystal using photoalignment technique. The former is a polarization-independent and electrically tunable. The maximum diffraction efficiency reaches 37%, which approaches the theoretical limit ~ 41 %. Such a lens functions as a…
A series of polycrystalline full-Heusler Co2MnAl thin films were deposited on Si (100) coated with thermo SiO2 by using different types of seed layers such as Cr, Mg, MgO∕Cr, and MgO. The properties of the Co2MnAl thin films such as the coercivity, atomic composition, and crystalline structure strongly depend on the d…
In this study many composites based on low density polyethylene (LDPE) with calcium carbonate (CaCO3) and maleic anhydride-grafted polyethylene (MAH-g-LDPE) as a compatibilizer have been investigated in order to study their behavior and the reinforcing mechanisms involved. Different types of chemical modifications of…
Abstract Thermodynamic phase behavior was studied for polymer dispersed liquid crystal (PDLC) films consisting of blends of different thermoplastics such as poly (bisphenol A carbonate) (PC), poly(methylphenylsiloxane) (PMPLSi), poly(styrene‐ b ‐ethylene oxide) (PSEO) block copolymer, and low‐molecular weight 4′‐(hexy…
Abstract Even at low content, polypropylene significantly worsens mechanical properties of the recycled PVC composite, i.e. tensile strength at break and elongation at break. But, if small quantities of surface modified nanofiller calcium carbonate is added, an applicable composite that contains 10–30% of waste materi…
This work is concerned with the influence of mica in natural rubber compounds on properties such as Mooney viscosity, processability and rheological behavior. The amount of this filler was varied from 0 to 40 phr and the stabilized and totalized torques, specific and mechanical energies were determined in a HAAKE torq…