Materials Literature
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The Mn dopant distribution in ultrathin (20 nm) highly doped (nominal $x$ = 0.20) ${Ga}_{1\ensuremath{-}x}$Mn${}_{x}$As epitaxial films with critical temperatures close to 175 K and magnetization of 100 emu/cm${}^{3}$ is analyzed by Rutherford backscattering spectrometry (RBS) in a random and channeling configuration.…
In order to diversify the structure of spun yarn as textile material and to develop novel composite spun yarn with good functionality, we investigated how to construct single yarn with a twin staple-core and sheath structure and/or adopt the production method of triplet spun yarn using an experimental ring spinning fr…
Calibrating an accurate OPC model usually requires a lot of one-dimensional CD-SEM measurements. A promising alternative is to use a SEM image contour approach but many challenges remain to implement this technique for production. In this work a specific flow is presented to get good and reliable contours well matched…
A general strategy for constructing graphene-based nanocomposites is achieved by emulsion-based bottom-up self-assembly of hydrophobic nanocrystals (NCs) to positively charged colloidal spheres, followed by the electrostatic assembly of NC colloidal spheres with negatively charged graphene oxide in an acidulous aqueou…
Optical properties and phase transitions of Pb(In1∕2Nb1∕2)O3-Pb(Mg1∕3Nb2∕3)O3-PbTiO3 (PIN-PMN-PT) crystals near morphotropic phase boundary (MPB) have been investigated by temperature dependent transmittance and reflectance spectra. Three critical point energies Eg = 3.17–3.18 eV, Ea = 3.41–3.61 eV, and Eb = 4.74–4.81…
Micro-Raman spectroscopic study and lattice dynamics calculations were conducted to study a recently identified layered ternary carbide, Ti5Al2C3. The experimental Raman shifts were remarkably consistent with the calculated values. Polarized Raman spectrum was collected in the polycrystalline sample, which confirmed t…
Recently discovered amorphous silica-based nanotubes (SBNTs) forming 3D hyperbranched assemblies were studied with transmission electron microscopy. The chemical composition and the element distribution in these template-free synthesized SBNTs were analyzed in depth at the nanoscale with energy-dispersive X-ray and el…
Glass system with chemical formula: xBaO-(30 x)Fe2O3-10Li2O-30Bi2O3-30P2O5 mole % is prepared to be used as radiation shield. The mass attenuation coefficient, half value layer, the total atomic cross-section (σtot) and the effective atomic number (Ze f f) of the glass system to gamma rays have been measured experimen…
Abstract The structural, magnetic and magnetocaloric properties of barium doped lanthanum manganites La 1‐x Ba x MnO 3 with x = 0.1, 0.2 and 0.3 compositions were investigated. The X‐ray powder diffraction results show that all samples crystallize in the rhombohedral R‐3c space group. The substitution of La 3+ by the…
The temperature dependence of electrical capacitance of planar microstructures with vanadium dioxide (VO2) film near the insulator-metal phase transition has been investigated at the frequency of 1 MHz. Electrical capacitance measurements of the microstructures were performed by the technique based on the using of a t…
We have synthesized ferromagnetic <TEX>${\tau}$</TEX>-phase <TEX>$Mn_{54}Al_{46}/{\alpha}$</TEX>-phase <TEX>$Fe_{65}Co_{35}$</TEX> composite by annealing a mixture of paramagnetic <TEX>${\varepsilon}$</TEX>-phase <TEX>$Mn_{54}Al_{46}$</TEX> and ferromagnetic <TEX>${\alpha}$</TEX>-phase <TEX>$Fe_{65}Co_{35}$</TEX> part…
We report electronic Raman scattering measurements of Sr(Fe${}_{1\ensuremath{-}x}$Co${}_{x}$)${}_{2}$As${}_{2}$ single crystals in their magnetic--spin density wave (SDW) phase. The spectra display multiple, polarization-resolved SDW gaps as expected in a band-folding itinerant picture for a multiband system. The temp…
In this experimental study, the performance of injection-molded short flax and hemp fibers in plasticized starch acetate were analyzed in terms of strength. Parameters involved in the analysis are a variable fiber and plasticizer content. The measured strength of the composites varies in the range of 12–51 MPa for fla…
We report on the investigation of the structural, chemical and optical properties of undoped and Eu-doped SiOC thin films synthetized by RF magnetron sputtering. Undoped SiOC exhibits an intense room temperature luminescence at ~ 500 nm, and an important contribution to this signal is due to the presence of Si-C bonds…
Basalt fabric composite, with different twill wave reinforcements, i.e. twill 2/2 and twill 1/3, have been studied in this work by means of experimental tests and numerical finite element (FE) simulations. As fabric reinforcements show repeating undulations of warp and fill yarn, simple mixtures law cannot be applied.…
High purity nanocrystalline α-alumina powder was mixed with 20 wt% ZrO2 by slurry method sintered at temperature (Ts) 1450°C, 1500°C, 1550°C and 1600°C for 2 hour. The density, porosity, structural properties and mechanical properties of Al2O3-ZrO2 composites with respect to sintering temperature have been explored in…
Zinc borate (ZB) is an industrially important flame retardant material and ulexide is a plenty mineral in Turkey. ZB has been prepared via an aqueous reaction method using zinc oxide, synthesized boric acid by ulexide and reference zinc borate as seed as initial materials. This route is facile and acceptable for an ec…
We present first-principles calculations on the bandgap of graphene on a layer of hexagonal boron nitride in three different stacking configurations. Relative stability of the configurations is identified and bandgap tunability is demonstrated through the application of an external, perpendicularly applied electric fi…
This paper describes the synthesis and structure of protein nanotube (NT) with a lectin interior surface and its size‐dependent dextran loading ability in aqueous medium. The NTs were prepared using an alternating layer‐by‐layer build‐up assembly of poly‐ l ‐arginine (PLA) and human serum albumin (HSA) in a track‐etch…
Molecular dynamics simulations of the Lennard-Jones model are used to study phase transitions at a smooth surface. Our motivation is the observation that the existence of an attractive wall facilitates crystallization. To investigate how this wall influences phase transitions, the strength of wall-particle interaction…