Materials Literature
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GaAs nanowires were grown on the semi insulating undoped GaAs (111)B wafer by using metal organic chemical vapor deposition, MOCVD. The growth follows the vapor-liquid-solid method by applying nanoparticle gold colloid as a catalyst to forms a eutectic liquid alloy with the wafer substrate. The GaAs wafer were first d…
Refractive indices of the highly polar compounds are evaluated by computation from first principles combined with molecular dynamics simulation. The molecular polarisability is obtained by density functional theory (DFT) using the B3LYP potential; the equilibrium density in the liquid phase is calculated utilising the…
Holograms recorded in dichromated gelatin (DCG) are usually sealed with a glass plate cemented with an epoxy glue to protect the holograms from moisture in the environment. An investigation of the wavelength properties of sealed DCG holograms had been carried out paying attention to holograms which were exposed to dif…
First-principles study of chemical-edge-doping effect on transport properties of armchair-edge graphene nanoribbons, Nishida, Yasutaka, Yoshida, Takashi, Aiga, Fumihiko, Yamazaki, Yuichi, Miyazaki, Hisao, Kajita, Akihiro, Sakai, Tadashi
In this paper we study the process of plasma enhanced chemical vapor deposition (PECVD) of carbon nanostructures in the form of a film, the pillars, the flakes at a temperature of 100-350 °C from the vapor-gas mixture H2+CO+Ar. Also in the paper presents the structural features of the carbon nanopillars obtained at 25…
Au nanorod arrays were fabricated using a focused gallium (Ga) ion beam ( fib Au_NRs) with various levels of Ga ion energy. The formation of AuGa 2 on fib Au_NRs was controlled by adjusting the level of Ga ion energy and subsequent heat treatment in order to increase the effect of surface-enhanced Raman scattering (SE…
The improved perturbation formulas of the spin Hamiltonian parameters (zero-field splitting D and g factors) for a 3d5 ion in trigonally distorted tetrahedra are constructed from the cluster approach by including both the crystal-field and charge-transfer contributions. These formulas are applied to the studies of the…
In the present research, a microneedle Cu (II) selective electrode based on conducting polypyrrole (PPy) doped with 8hydroxyquinoline-5-sulfonic acid (8-HQS) is introduced.8-HQS which has been incorporated into the polypyrrole backbone during electropolymerization acts as an active ionophore for Cu (II) ion recognitio…
In this study, we aim to improve the surface property and bulk tensile property of M40J graphite fiber by γ-ray co-irradiation treatment of the fiber in epichlorohydrin/acetone mixed solution. The effect of the irradiation treatment was analyzed by X-ray photoelectron spectroscopy, atomic force microscopy, dynamic con…
Laser shock microforming of Aluminum(Al) foil through fs laser has been researched in this paper. The influences of confining layer, clamping method and impact times on induced dent depths were investigated experimentally. Microstructure of fs laser shock forming Al foil was observed through Transmission electron micr…
The use of phage display to select material-specific peptides provides a general route towards modification and functionalization of surfaces and interfaces. However, a rational structural engineering of the peptides for optimal affinity is typically not feasible because of insufficient structure-function understandin…
A simple, economical, and recyclable catalytic route is developed for the synthesis of alkyl phenyl ethers by the liquid phase reaction of phenol derivatives with alkyl esters using conventional and nanocrystalline zeolite Beta. A wide range of alkyl phenyl ethers can be prepared using this catalytic protocol. Nanocry…
In this work we intend to study the thermodynamic and microscopic structural properties of Tl-Na liquid alloy at 673 K on the basis of regular associated solution model. We have estimated the mole fractions of the complex and the free monomers assuming the complex TlNα as energetically favoured in the initial melt. In…
Using amorphous oxide templates known as micro-crucibles which confine a vapor–liquid–solid catalyst to a specific geometry, two-dimensional silicon thin-films of a single orientation have been grown laterally over an amorphous substrate and defects within crystals have been necked out. The vapor–liquid–solid catalyst…
Abstract Integral cross sections of the reactions 46Ti(n, p)46Sc, 47Ti(n, p)47Sc, 48Ti(n, p)48Sc, 60Ni(n, p)60Co and 64Zn(n, p)64Cu were measured with fast neutrons (E n > 1.5MeV) from an Am/Be source. The results were compared with data calculated using the neutron spectral distribution and the excitation function of…
Abstract The radiolytic stability of different substituted diglycolamides such as N,N,N′,N′-tetrapentyl diglycolamides(TPDGA), N,N,N′,N′-tetrahexyl diglycolamide (THDGA), N,N,N′,N′-tetraoctyl diglycolamide (TODGA), N,N,N′,N′-tetradecyl diglycolamide (TDDGA) and N,N,N′,N′-tetra-2-ethyl hexyl diglycolamide (T2EHDGA) was…
Mesoporous CeO 2 was synthesized by the nanocasting pathway using the mesoporous SBA-15 silica as structure template and cerium nitrate as the CeO 2 precursor via a solid–liquid route. Ag / CeO 2 catalysts were prepared by three different methods: wetness impregnation (WI), deposition–precipitation with urea (DPU) and…
The article describes the results of studying complexes diatoms sediments of middle Sarmatian in the northern part of Black Sea region. Comparative analysis has been done of taxonomic composition of locality diatom complexes as a result of studies. This article contains information about the correlation remote section…
Three types of reflectors, including the distributed Bragg reflectors (DBRs), the first hybrid reflectors composed of DBR and Al mirror (DBR-Al), and the second hybrid reflectors composed of DBR, an additional low-refractive-index layer, and Al mirror (DBR-L-Al), were investigated by use of thin-film theory at the cen…
The interaction between dynamic drafting force and its variability with break draft and short term irregularity of carded cotton sliver has been discussed. Drafting force data have been collected from online draftometer, installed on break draft zone of cotton drawing frame. The results indicate that the dynamic draft…