Materials Literature
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We report on a successful growth of self-organized In 0.3 Ga 0.7 N nanorods by low-temperature plasma-assisted molecular beam epitaxy on a Si(111) substrate with and without preformed thin porous Si layer ( por-Si ). XPS study of both samples confirmed In content predicted according to the growth conditions as well as…
Luminescence is an optical characteristic of materials under optical illumination.We have studied the luminescence of gemstone samples of nephrite which are common in Aceh.The samples were illuminated using two laser beam, green laser at 543 nm and red laser at 633nm.The transmitted and scattered light from samples we…
The synthesis of hexagonal phase of silicon (9R polytype) by ion implantation has been studied. Transmission electron microscopy reveals the 9R regions in a subsurface layer of silicon substrate after ion implantation and subsequent heat treatment. The results are discussed from the viewpoint of the effect of mechanic…
Nickel oxide (NiO) thin films were deposited by an RF magnetron sputtering process in different atmospheres: one with a mixture of nitrogen and argon, and another with oxygen and argon. The structural, optical and electrical properties of NiO films were investigated using the spectroscopy, atomic-force microscopy and…
The study of the surface of sheet metal with polymer coatings by optical microscopy method showed that it consists of grooves which collect in star-like condensations on the surface. When comparing images obtained by an optical microscope and the method of scanning probe microscopy, we observed scale invariance.Theref…
Nanocomposite coatings are attractive due to their unique mechanical, physical and multifunctional properties, which can address the limitations of conventional monolithic structures to achieve an excellent combination of strength, stiffness, toughness, and some other functional properties. In this study, a novel in-s…
By modeling solar cells with quantum dots based on A3B5 materials it is necessary to take into account the large number of localized quantum levels arising in the forbidden band of the host material. In this paper Empiric k-p Hamiltonian model have been used to describe InAs/GaAs structure. For the model two shape of…
A (1H,1H,2H,2H-heptadecafluorodec-1-yl) phosphonic acid-coated polyurethane–tin oxide–carbon nanotube composite microfiber as a strain sensor, with large stretchability and high stability, can accurately monitor human joint motion suggesting that it can be applicable to detect all minute bending movements in the elbow…
In order to investigate dependence of conductivity on the temperature and photoreponse of β-Ga 2 O 3 thin films, films were grown by a radio frequency magnetron sputtering on sapphire substrates. The conductivity of films without annealing depends weakly on the temperature to 560 °C and increase exponentially at T >56…
A model dealing with the conditions of equilibrium and initial stability of floating bodies in two dimensions with an arbitrary cross-section has been proposed recently (J. Fluid Mech. 847:489-519, 2018). The method is applied to investigate the hydrostatics and stability of the configuration of an elliptical cylinder…
The stability constants of the complexes of rare earth elements -La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu with arylhydrazones of benzoylacetone have been determined by the method of potentiometric titration, which change in the following sequence: Lu > Yb > Tm > Er > Ho > Dy > Tb > Gd > Eu > Sm > Nd > Pr…
In article number 1801142 Hyemin Lee, Chang-Koo Kim, Hyunsik Yoo, and co-workers present a sequential recovery of clustered slanted hydrogel pillars to their original shape by exploiting the modulus change of hydrogel materials during water evaporation. The clustering and recovery of the slanted hydrogel micro-pillars…
InAs/GaInPnano-heterostructures obtained by embedding 1.3 -2.1 monolayers of InAs in the GaInP matrix lattice-matched to a GaAs substrate have been grown by the MOVPE and investigated.The formation of large nano-objects with lateral size of 150 -200 nm, which did not depend on the InAs thickness, has been observed by…
In this study, chitosan films were fabricated through solution casting method with a thickness of 200 μm. Testing of charging and discharging characteristics of dielectric chitosan film was done by placing a chitosan film in a capacitor system configuration. The testing used an RC series circuit with the supply voltag…
A novel method of forming the phase diffractive optical elements (DOEs) by direct laser writing in thin films of aluminum was presented. The quality of the writing process in aluminum films were investigated depending on the parameters of magnetron sputtering process. This method of phase diffraction optical elements…
This article is concerned with Raman study of µc-Si:H obtained by PECVD under different deposition conditions. The analysis of crystal fracture and bonded hydrogen content in the layer was carried out. It is shown that as the amorphous phase increases, the content of Si-H bonds prevails. Optimal conditions for deposit…
The present paper is devoted to numerical simulation of two-phase two-component isothermal viscous compressible microfows with surface tension and wetting efects within complex voxel-based fow domains. As a basic mathematical model the Navier–Stokes–Cahn– Hilliard (NSCH) equations are utilized. To use easy-to-implemen…
In the work, GaAs solar cells (SCs) structures with embedded InAs and Ina 8 Ga a2 As arrays of quantum dots (QDs) was obtained by metalorganic vapor-phase epitaxy. The spectral characteristic of internal quantum yield of grown SCs were measured and it was shown that the use of InGaAs QDs allows preserving the quality…
In article number 1804006, Chih-Jen Shih and co-workers introduce a new transistor design concept for sensing ultrasmall surface forces by the deformation of a liquid metal droplet on the superhydrophobic semiconductor nanowires grown on graphene, referring to the interfacial field-effect transistors.
The research on fabrication and characterization of natural rubber composites (SIR 5)/organo-montmorillonite using cetil trimetil ammonium bromide (CTAB) as an organic modifier has been conducted. Natural rubber SIR-5 was masticated at 60 °C by applying the time variations of 0, 5, 10, 15, 20, and 25 minutes using two…