Papers – Page 71 – TechConnect Briefs

C-AFM as a means to identify heterogeneities at the nanoscale in thin anodic TiO2 films

Diamanti M.V., Souier T., Chiesa M., Pedeferri MP., Politecnico di Milano, IT

The anodic oxidation of titanium allows the obtaining of an oxide layer with thickness, color, homogeneity and insulating properties that depend on the process parameters. TiO2 thin films have been studied mostly to derive information [...]

Effects of ZnO buffer layer and depth profiling analysis of bulk heterojunction organic solar cells

Mbule P.S., Kim B.S., Kim T-H., Kim B.S., Kim T-H., Swart H.C., Ntwaeaborwa O.M., University of the Free State, ZA

Bulk heterojunction organic solar cells (BHJs) with ZnO nanoparticles buffer layer between the active layer and the aluminum (Al) top electrode were fabricated. The BHJs comprised of successive layers of poly(3,4ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), a blend of [...]

Nanoscale fast Ge diffusion in laser irradiated SiGe thin films

Teodorescu V.S., Ghica C., Maraloiu A.V., Lepadatu A.M., Stavarache I., Ciurea M.L., Scarisoreanu N.D., Andrei A., Dinescu M., National Institute for Materials Physics, RO

We report the presence of a fast Ge diffusion effect produced during laser crystallization of Si0.45Ge0.55 films deposited by magnetron sputtering on Si(100) substrates. The laser irradiation was performed using the 265 nm wavelength radiation [...]

Investigation of the MgO absorbate and the MgO/Fe on GaAs(001) surface by means of XPS and XPD

Handschak D., Schönbohm F., Lühr T., Keutner C., Berges U., Westphal C., TU Dortmund, DE

We report a combined high-resolution photoemission and photoelectron diraction investigation of a magnesium oxide adsorbate on an Fe surface grown on a GaAs(4x2)-reconstructed substrate. MgO is an appliciable insulator in magnetic tunnel junctions (MTJ) based [...]

Effect of SiO2 on the electrical and magnetical properties of nanocrystalline NiFe2O4

Prakash I., Venkateswarlu M., Satyanarayana N., Pondicherry University, IN

NiFe2O4 is an important magnetic material because of its applications in various fields Ferrites are also used in gas, humidity sensor and anode materials in lithium ion batteries. The problem existing in anode material is [...]

Preparation and characterization of new nanocomposites synthesized of Au and Au–Ag bimetallic nanoparticles encapsoulated in functionalized multiwalled carbon nanotubes

Sarlak N., Sameri Z., Meyer T.J., Pourrahim R., Shaabani K., University of North Carolina at Chapel Hill, US

Highly dispersed Au and Au-Ag nanoparticles supported on carbon nanotubes are generated using an easy synthesis. MWCNT was opened and its derivative containing -COOH and -OH functional groups was obtained. Polycondensation of monohydrate citric acid [...]

Study of Photocatalytic activity and properties of Transition metal ions doped Nanocrystalline TiO2 prepared by Sol-Gel Method

Siddhapara K., Shah D., S.V. National Institute of Technology, IN

In summary, we have reported the synthesis of 1%, 2% and 4% Fe,Co doped TiO2 powders successfully prepared via sol–gel synthesis and controlled calcinations. XRD for Fe, CO doped TiO2 indicates dopant concentration effects phase [...]

Study of sodium-chromium-iron-phosphate glass by XRD, IR, Chemical Durability and SEM

Makhkhas Y., Aqdim S., Sayouty E.H., Hassan 2d. University - Casablanca, MA

Chromium iron phosphate glass was investigated for use as waste form because of its improved chemical durability. The introduction of chromium in sodium-iron-phosphate glasses is used to compare its effect with iron in inhibition of [...]

Synthesis and Surface Activity of Amphiphilic 2-Acylamido-2-Methylpropane Sulfonic Acid – co-N-Isopropyl Acylamide Nanoparticles in Non-Aqueous Media

Atta A., King Saud University, SA

In this work, we synthesized a series of nonionic polymerizable nonyl phenol ethoxylates (NPEs) as organic solvent-soluble surfactants in which straight, branched and cyclic alkyls and phenyl acted as solvophilic segment and polyoxyethylene, or maleate [...]

Preparation and near infrared emission research of YBO3:Ce3+,Yb3+ nanosheets

Wang Y., Hu X., Zhan S., Zhang D., Zhang D., Fan J., Northwest University, CN

Y0.97Ce0.01Yb0.02BO3 nanosheets(a) and micro-rose(b) have the same hexagonal structure, and the intensity of (110) and (100) diffraction peaks of the sample a is stronger than b. Annealing the sample b in different temperature, the higher [...]