Materials Literature
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By the Green's function method, we investigate spin transport properties of a zigzag graphene nanoribbon super-lattice (ZGNS) under a ferromagnetic insulator and edge effect. The exchange splitting induced by the ferromagnetic insulator eliminates the spin degeneracy, which leads to spin-polarized transport in structu…
Nanotechnology offers powerful new approaches to controlling unwanted microorganisms and other potential biohazards. Engineered nanoparticles with antifungal, antimicrobial, and antiviral properties are now being developed for a variety of applications, including manufacture and maintenance of sterile surfaces, preven…
The coercivity of Pr2Fe14B/α-Fe magnetic nanomaterial has been drastically improved from 6.8 kOe to 26 kOe by the diffusion of the Pr68Cu32 alloy. Pr68Cu32 alloy reacts with α-Fe to form boundary phases among Pr2Fe14B grains. The boundary phases have weak magnetic properties and have a thickness comparable to the doma…
We have investigated surface composition, structure, and termination of SrTiO3(001) samples (STO) following typical steps of standard ex situ and in situ preparation procedures by performing x-ray photoelectron spectroscopy (XPS) and x-ray photoelectron diffraction (XPD) experiments, and multiple scattering cluster (M…
For its outstanding piezoelectric coefficients, thin-film sol-gel Pb(Zr0.52,Ti0.48)O3(PZT) has been widely studied over the past few decades. In particular, the impact of Zr/Ti ratio control on e31,effcoefficient has been investigated at low fields. Yet, when it comes to actuation, PZT films are used with electric fie…
Abstract Application of deep cryogenic treatment instead of conventional heat treatment showed an increase in wear resistance of tools made of high speed steel which are exposed to very complex and demanding conditions in exploitation. The purpose of this study was to investigate the effect of deep cryogenic treatment…
Fungi are important pathogens of vegetables, fruits, cereals, pulses, and other crops. Several management strategies have been used for the control of pathogenenic fungi. Each of these methods has one or other limitations. Due to hazardous effects caused by excessive use of pesticides, scientists in the agricultural f…
Following the previous achievement of highly crystalline α-Ga 2 O 3 thin films on c -plane sapphire, the growth of corundum-structured α-(Al x Ga 1- x ) 2 O 3 was examined aiming at the future application of α-(Al x Ga 1- x ) 2 O 3 /Ga 2 O 3 heterostructures to power devices and other functional devices. The results s…
Zaccariniite, RhNiAs, is a new platinum-group mineral discovered in the Loma Peguera ophiolitic chromitite, Dominican Republic. The mineral forms anhedral grains (1–20 μm in size) and occurs intergrown with garutiite, in association with hexaferrum, Ru-Os-Ir-Fe alloys, Ru-Os-Ir-Fe oxygenated compounds, and chromite. Z…
The effect of nanosize particles on dielectric and magnetic properties of NiFe2O4 (NF) ferrite has been studied. NF n anoferrites were prepared by a chemical combustion route followed by annealing temperatures from 400° to 700°C. The X-ray diffraction (XRD) shows minor amorphous behaviour of NF at 400°C. However, spin…
Integration of low dielectric constant (k) materials such as organosilicate glasses (OSG) into microelectronic processing demands a better of understanding the plasma/OSG interactions during plasma etching and ashing of these materials, based on which low-k materials with higher radiation resistance and better mechani…
Literature data regarding the behavior of partial discharge inception voltage (PDIV) under repetitive impulsive voltage waveforms is contradictory. Some authors have found that rise time can lower PDIV, others just the opposite. The picture complicates further when repetitive PDIV (RPDIV) is discussed. In many papers,…
Electrical steel is mainly characterized by its magnetic properties, i.e. the specific total loss and the magnetic polarization. In addition, mechanical and physical properties as well as coating and workability can strongly influence the performance and the cost of the resulting electric machine. The various properti…
Abstract An l-proline containing amphiphilic dipeptide was found to self-assemble into nanosphere and nanofiber structures. These nanostructures could catalyze an asymmetric aldol reaction in water. Good reactivity and enantiomeric selectivity was observed for the nanosphere structure. Although the reaction could be c…
The conductivity of random resistor networks composed from percolating clusters of two-dimensional (2D) stick systems with anisotropic alignments is analyzed by using a finite-size scaling analysis for comparison to the conductivity of single-walled carbon-nanotube bundle film networks. For the conductivity analysis,…
Abstract In this paper, a novel plasmon‐enhanced photoluminescence (PL) hybrid system is presented based on metal–semiconductor nanostructure, in which TiO 2 :Sm 3+ works as luminophor while the gold nanoparticle (NP) as the promoter of plasmon resonance. The plasmon‐enhanced PL is obtained by optimizing the plasmon r…
In this article, the effect of water glass on the mechanical and thermooxidative properties of kenaf and sisal fibres has been investigated. Single fibres were manually separated from the bundles and immersed in liquid water glass that produced a thick polysilicate coating. The water glass treatment significantly impr…
Crystal forms of polyethersulfones (PES) were investigated by using a model compound and a low molecular weight oligomer. These are amorphous as-synthesized, and can undergo solvent-induced crystallization under the appropriate conditions. The model compound, 4,4′-bis(p-methoxyphenoxy)diphenyl sulfone, yielded monocry…
The attempt of the engineering of modern liquid crystalline orhoconic antiferroelectric smectic material OAFLC with remarkable optical properties is reported. The high tilted anticlinic antiferroelectric parent mixtures were formulated and studied. Subsequently those parent mixtures were doped with homo- and heterostr…
Au nanoparticles have been used in biomedical applications since ancient times. However, the rapid development of nanotechnology over the past century has led to recognition of the great potential of Au nanoparticles in a wide range of applications. Advanced fabrication techniques allow us to synthesize a variety of A…