Materials Literature
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Propeller‐shaped and flower‐shaped ZnO nanostructures on Si substrates were prepared by a one‐step chemical vapor deposition technique. The propeller‐shaped ZnO nanostructure consists of a set of axial nanorod (50 nm in tip, 80 nm in root and 1 μ m in length), surrounded by radial‐oriented nanoribbons (20–30 nm in thi…
We report a one-step, low-pressure, chemical vapor deposition (CVD) process to obtain a three-dimensional (3D) carbon architecture consisting of vertically aligned carbon nanofiber arrays on multi-layered graphene films. The morphology and structure of the hybrid materials grown on transmission electron microscopy cop…
The interactions between Au clusters and graphene sheets with and without doping have been studied systematically. It is found that B-doped graphene is a good support for Au clusters, not only because of the charge transfer from the graphene sheet to its supported Au clusters, but also due to its stronger interaction…
Here we demonstrate a facile approach to grow uniform and large area single layer graphene directly over polycrystalline metal foil from fullerene, where fullerene molecules formed rod-like polycrystals in the toluene solvent. The generated pressure on sandwich structures has enhanced the density (scalable) as well as…
The sorption behavior of Cu((II), Zn(II), and Pb(II) onto multiwall carbon nanotubes (CNTs) oxidized with nitric acid was investigated. The effect of pH and metal ion concentration on their retention were studied together with more detailed information on the structural properties of CNTs, such as the surface area, th…
A precisely defined molecular Janus compound based on asymmetric tapered 1,4-bis[3,4,5-tris(alkan-1-yloxy)benzamido] benzene bisamide (abbreviated as C22PhBAEO3) was designed and synthesized, and its phase behavior was fully investigated. The C22PhBAEO3 compound possesses a rigid core with three aromatic rings connect…
Porphyrins have attracted much attention as dyes for photovoltaic applications due to their remarkable light harvesting properties and tunability of electronic behaviour. The photophysical and photochemical properties of porphyrins are influenced by electron-donating or electron-withdrawing substituents that can be at…
Surface-enhanced Raman spectroscopy (SERS) of thiols and dye molecules adsorbed on triangular silver nanostructures was investigated. The SERS hot-spots are localized at the edges and corners of the silver triangular particles. AFM and SEM measurements permit to observe many small clusters formed at the edges of trian…
Acoustic emission (AE) generated during tensile deformation of smooth and notched specimens of near Alpha titanium alloy have been studied. A few tests carried out with both types of specimens were also interrupted in order to correlate with the damage mechanism. The results have shown higher acoustic emission during…
Gelatin-capped gold nano particles (GNPs) of diameter 23, 28 and 36 nm were prepared and characterized as almost monodispersed, near-spherical solids. In acidic media, these GNPs at their very low concentration level (∼10(-13) M) catalyze the oxidation of hydrazine by the metallo-superoxide, [(NH(3))(4)Co(III)(μ-NH(2)…
The radiation attenuation properties of gamma-ray have been studied for cement containing with BaSO4 and PbO. The mass attenuation coefficients (μ/ ρ, cm2 g-1) of cement have been calculated by theoretical approach using WinXCom program at the photon energies of 1 keV to 100 GeV. The composition of cement was analyzed…
In this study, gold-loaded titanium dioxide was prepared by an impregnation method to investigate the effect of surface plasmon resonance (SPR) on photoactivity. The deposited gold nanoparticles (NPs) absorb visible light because of SPR. The effects of both the gold content and the TiO2 size of Au/TiO2 on SPR and the…
We predicted here gravimetric hydrogen storage capacity of Ti2–C2H4 and Ti2–C2H4+ complexes using density functional theory (DFT) method. The number of adsorbed H2 on Ti2–C2H4 is limited to ten. It has been seen that controlling the charge-state of this complex enhances its gravimetric hydrogen uptake and the metal bo…
This paper reports the first systematic investigation of the selectivity of organic guest intercalation into hydroxy double salts. The organic guests 1,2- and 1,4-benzenedicarboxylate (1,2- and 1,4-BDC) have been incorporated into a range of hydroxy double salts by anion exchange. Intercalates of [Zn5(OH)8](NO3)2·yH2O…
Abstract Liquid crystal cell (LCC) for space-borne laser rangefinder to space mission applications was developed, manufactured and tested under cooperation between Military University of Technology (MUT) in Poland and Vavilov State Optical Institute (Vavilov SOI) in Russia. LCC operates in twisted nematic mode, commut…
Stretchable and highly conductive films made of poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate) (PEDOT/PSS) were prepared by casting the PEDOT/PSS aqueous dispersion as colloidal gel particles containing xylitol and subsequent heating. The electrical conductivity and elongation at break of the PED…
Nanowire-structured MnO 2 was synthesized by a sonochemical method and its electrochemical capacitances were investigated in three kinds of electrolytes: liquid-type KCl solution, potassium polyacrylate (PAAK), and potassium polyacrylate- co -polyacrylamide (PAAK-PAAM) gel polymer electrolytes (GPEs). The prepared MnO…
Heterobimetallic [Zn(II)Ln(III)] complexes have been obtained using a compartmental Schiff-base ligand, H(2)valdmpn, resulting from the 2:1 condensation between o-vanillin and 2,2-dimethyl-propilenediamine: [Zn(H(2)O)(valdmpn)Sm(O(2)NO)(3)] 1, [Zn(H(2)O)(valdmpn)Tb(O(2)NO)(3)] 2a, [Zn(H(2)O)(valdmpn)Tb(O(2)NO)(3)]·H(2…
A cotton-assisted preparation method of mesoporous manganese oxides for supercapacitors is reported. The samples were fully characterized to study the morphology, chemical composition, surface area and pore structure. The results of the electrochemical tests show that these electrode materials possessed good capacitiv…
Previous fiber-shaped solar cells are based on polymeric materials or dye-sensitized wide band-gap oxides. Here, we show that efficient fiber solar cells can be made from semiconducting nanostructures (e.g. CdSe) with smaller band-gap as the light absorption material. We directly grow a vertical array of CdSe nanowire…