Materials Literature
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Research on nonmaterials has become increasingly popular because of their unique physical, chemical, optical and catalytic properties compared to their bulk counterparts. Therefore, many efforts have been made to synthesize multidimensional nanostructures for new and efficient nanodevices. Among those materials, zinc…
micro-computed tomography (CT), double fluorescent labeling, and hard tissue biopsy to evaluate their osteogenic effect. During the two months of observation, the Mg/Mg-Cu coatings exhibited no advantages when compared with the bare porous structures in terms of bone integration; however, the porous structures were mo…
The results of magnetoelectric effect experimental studies in two different structures based on piezoelectric semiconductor gallium arsenide are presented. The monolithic structure consisted of a gallium arsenide substrate with deposited nickel layer (GaAs-Ni), and the composite structure contained a semiconductor sub…
In this paper the results of specific magnetization and magnetocaloric effect (MCE) measurements for Gd(Co1-xFex)2 system upon the Co substitution by Fe for the x = 0 ÷ 0.60 range are presented. Phase composition was controlled by X-ray diffraction analysis. MCE has been studied within the temperature range of 300-850…
Magnetic multilayer structures which consist of the ferromagnetic layers separated by nonmagnetic layers with giant magnetoresistance (GMR) are widely used as spintronic devices and read heads of hard disks. In this work magnetic and exchange interaction characteristics of Co/Cu/Co, Ni/Cu/Ni and Fe/Cr/Fe multilayer st…
There is significant uncertainty about the relationships between microstructure, plasticity mechanisms, and strength in high pressure and high strain-rate conditions. Using molecular dynamics simulations of propagating ramp compression and release waves, we examine strength and plasticity in [100] single crystalline a…
In this paper, a simple, facile and green approach to synthesis Gum Arabic (GA, a natural gum) assisted ZnO nanoparticles by using a wet chemical reaction method is reported. The synthesis of ZnO nanoparticles has been with the assistance of two different types of GA namely Acacia Senegal and Acacia Seyal. The effects…
The porous silicon nanostructures was prepared by electrochemical etching of p-type silicon wafer. Porous silicon prepared by using different current density and fix etching time with assistance of halogen lamp. The physical structure of porous silicon measured by the parameters used which know as experimental factor.…
We studied Goos–H?nchen (GH) shifts on a reflective phase-gradient-produced metasurface. Their analytical solutions were achieved for both TE and TM polarizations utilizing the generalized Snell’s law. The calculated results show that the GH shifts are evidently affected by phase gradients and incident angles, which m…
In order to investigate the possibility for control of macrosegregation by size and shape of equiaxed grains, laboratory scale casting experiments have been performed, using Al-10mass%Cu alloy. The mold was newly developed in order to produce macrosegregation, intentionally bringing about a bridging in the middle of a…
Three new shape characterization techniques for the pore network model are developed so that capillary behavior can be predicted more accurately. Given a shape factor and inscribed radius, the C-T-Q (circles, arbitrary triangles, and quadrangles) characterization is proposed based on the C-T-S (circles, arbitrary tria…
AbstractMolecular relaxation processes are inspected in potassium and cesium perchlorates (KClO_4 and CsClO_4, respectively) via Raman spectroscopy. A first-order phase transition in KClO_4 and CsClO_4 crystal perchlorates is found to be extended. A pretransition region is also detected in KClO_4 and CsClO_4 systems,…
Journal of Nano- and Electronic Physics. Scientific journal. ISSN: 2077-6772. Journal abbreviation: J. Nano- Electron. Phys. No page charges. All articles are freely available on-line. Issued 4 times per year. Publisher: Sumy State University. (Sumy, Ukraine)
We demonstrate a broadly tunable, polarized and selective thermal emitter from highly aligned and densely packed single-wall carbon nanotubes (SWNCTs) operating at 700 °C, originating from their optical topological transition.
We study the phase behavior of charged particles in electrolyte solutions wherein non-adsorbing polymers are added to provide an attractive depletion interaction. The polymer has a radius of gyration similar to that of the particle radius, which causes significant many-body effects in the effective polymer mediated in…
Semiconductor nanoparticles have received considerable interest due to their size-dependent optical properties. CdS is an important semiconductor material widely used in low cost photovoltaic devices, light-emitting diodes and biological imaging. The nanoparticles of CdS were prepared by a simple chemical precipitatio…
Optical band gap energy in the system 25Na2O-(75-x)[0.6P2O5-0.4ZnO]-xMnO2 (where x = 0.5,1,5,10 and 20 mol.%) have been studied. The intensity of the absorption band found to increase with increase of MnO2 content. The decrease in the optical band gap energy with increase in MnO2 content in the investigated glasses is…
We demonstrate large reflection and transmission modulation and femtosecond relaxation times in undoped zinc oxide films. Using these experimental results, we designed an optically tunable, terahertz-speed metasurface with a 17.4dB extinction ratio at 1.30 μm.
Dielectric parameters of free standing films of pure PVA (PolyvinylAlcohol) and PVA with varying concentrations of PVP(Polyvinylpyrrolidone) and Polypyrrole were prepared and studied in low frequency range (100Hz – 2MHz). The results show that dielectric constant, loss tangent and conductivity increase sharply on incr…
In this paper, the Nb-doped TiO2 films were deposited on glass substrate and their electrical and structural properties were investigated. The results revealed that the resistivity of Nb-doped TiO2 films of 0 at.%, 1 at.%, 3 at.%, 5 at.% and 7 at.% were 2.78 × 105, 1.35 × 105 Ω.cm, 5.89 × 104 Ω.cm, 9.20 × 102 Ω.cm and…