Materials Literature
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A series of Mn48–xTixNi42Sn10 (x = 1, 2, 3, and 4) ferromagnetic shape-memory alloys were prepared by the arc melting method. The results show that the martensitic transition (MT) temperatures and Curie temperature decrease clearly with Ti addition, but no obvious phase transition from weak-magnetic martensite to a fe…
State-of-the-art processes cannot achieve rubber/multi-walled carbon nanotube (MWCNT) composites with satisfactory performance by using pristine MWCNTs and conventional processing equipment. In this work, high performance rubber/MWCNT composites featuring a combination of good mechanical properties, electrical and the…
As peneiras moleculares MCM-41 têm atraído grande interesse devido as suas propriedades de alta área específica, volume e diâmetro de poros controláveis. Estes materiais são aplicados em diversos ramos da indústria química como adsorventes, suportes catalíticos e catalisadores heterogêneos em vários processos. Neste t…
Spontaneous catalyst‐free polymerizations of 4‐ethynylpyridine (4EPy) and 2‐ethynylpyridine with bifunctional quaternizing agents (QAs) of bis(bromomethyl)arenes provide highly crosslinked polymer networks in high yields. 13C cross‐polarization magic‐angle spinning (CP/MAS) NMR, Fourier transform IR (FTIR) and diffuse…
Despite the importance of vacancies over the properties of insulating oxides its influence on neighboring transition metal ions is far from being understood. This work is devoted to find the origin of various up to now unexplained properties of chromium bounded either to a <100> or a <110> Mg(2+) vacancy in MgO. In th…
Cu2O flower/grass-like nanoarchitectures (FGLNAs) were fabricated directly on two category specimens of Cu foils and Cu film using thermal oxidation method. The FGLNAs are approximately 3.5 to 12 μm in size, and their petals are approximately 50 to 950 nm in width. The high compressive stress caused by a large oxide v…
The two-dimensional C 1s photoelectron intensity angular distributions (PIADs) and spectra of exfoliated graphene flakes and crystalline graphite were measured using a focused soft X-ray beam. Suitable graphene samples were selected by thickness characterization using Raman spectromicroscopy after transferring mechani…
Sliver evenness is a very important parameter affecting the quality of the yarn produced. Therefore, controlling the sliver evenness is of major importance. Auto-levelers mounted on modern Drawing Frames should be accurately adjusted to help to achieve this task. The Leveling Action Point (LAP) is one of the important…
We investigate the electronic structure of FeTe0.6Se0.4 employing high resolution photoemission spectroscopy and ab initio band structure calculations. Fe 2p core level and the valence band spectra exhibit signature of strong electron correlation in the electronic structure. The electronic states near the Fermi level…
Abstract The effects of ageing and hydrogen charging on the notch tensile properties and fracture behaviour of individual heat-affected zones (HAZ) and Ni-based weld metal (Ni WM) of T91/TP316H weldments were investigated. After the post-weld heat treatment at 750 °C for 1 h the weldments were annealed at 600 °C for 1…
The viscosity of poly(styrene)-b-poly(lactide) [PS-b-PLA] solutions in a neutral solvent was characterized by magnetic microrheology. The effect of polymer concentration on the viscosity of the block polymer solutions was compared with that of the PS and PLA homopolymers in the same solvent. The viscosity of PS-b-PLA…
The 2,7-bis(4-pyridyl)fluorene (BPF) was synthesized via a Suzuki coupling reaction. The optical spectra properties of BPF and BPF-deoxyribonucleic acid (DNA)-cetyltrimethyl ammonium (CTMA) thin films composed of BPF, DNA, and CTMA were characterized by the measurements of UV/Vis absorption spectra and fluorescence sp…
In this paper, a novel kind of high-performance composite was developed by blending 2, 2′-Bis(4-cyanatophenyl)isopropylidene with nano-silica (nano-SiO 2 ), in which the nano-SiO 2 was modified by a tri-copolymer of styrene, vinyltrimethoxysilane and methacrylate. The transmission electron microscopic and scanning ele…
The thermal flash technique was utilized for measuring the thermal conductivity of vapor-grown carbon nanofibers and graphene nanoplatelets. The vapor-grown carbon nanofibers with stacked-cone morphology and heat treated to 1100 °C and 3000 °C were measured to have thermal conductivities of 1130 W/m K and 1715 W/m K,…
We demonstrate the distorted K1 soft mode for the phonon instability of single layer hexagonal-BN sheet under tension, which is different from the well known K1 mode failure mechanism of graphene. We also investigate the influences of charge doping on the soft mode phonon instability. Meanwhile, the ideal strength is…
The maximum energy loss for electron stopping power calculations by the full Penn algorithm within the dielectric formalism is determined with taking into account the contribution of electron and plasmon excitations. Use of these calculated electron stopping powers in Monte Carlo simulations applying continuous slowin…
The genesis of this research work was constituted for the issue of classifying the characteristics of harmonics caused by partial discharge (PD). This work was undertaken based on the hypothesis that the characteristics of the harmonic orders caused by different types of Partial Discharge (PD) can be classified. Exper…
Strain effects on Josephson current in a graphene-superconductor junction are explored theoretically. It is demonstrated that the supercurrent is an oscillatory function of zigzag direction strain with a strain-dependent oscillating frequency. Interestingly, it is found that the Josephson current under armchair direct…
Monte Carlo simulations and integral equation theory were used to study the thermodynamics and structure of particles interacting through the smooth version of Stell-Hemmer interaction. We checked the possibility that a fluid with a core-softened potential reproduces anomalies of liquid water such as the density anoma…
An yttrium-aluminum-garnet (YAG) Thomson scattering (TS) system was constructed and applied to the tandem mirror GAMMA 10 device to measure the electron temperature and density. We developped GAMMA 10 YAG-TS system to be able to measure multi-position electron temperatures and densities in a single laser and single pl…