Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=54110#.VO2BbCzQrzE Author(s)    I. K. Battisha 1* , H. A. Wahab 1 , A. A. Salama 2 , A. A. El Saeid 2 , M. Willander 3 , O. Nur 3   Affiliation(s) 1 Solid State Physics Department, Physics Division, National Research Centre (NRC), Dokki, Egypt . 2 Physics Department, Al-Azhar University, Cairo, Egypt . 3 Department of Science and Technology, Campus Norrköping, Linköping University, Norrköping, Sweden . ABSTRACT Wurtzite hexagonal ZnO semiconductor nano-rods (NRs) thin films were grown on silicon substrates and silver wire with diameter equal 68 nm. Sol gel (SG) and aqueous chemical growth (ACG) methods by two steps of preparation (seed layers and nano-rod growth) are used for samples preparation. The structural and morphological properties are evaluated using X-ray diffraction (XRD) and scanning electron microscope (SEM). The proposed iron ion ...

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53523#.VMdF_yzQrzE Author(s)   Pratima Parashar Pandey *   Affiliation(s) Department of Materials Science, Mangalore University, Mangalagangotri, India . ABSTRACT Silver particulate thin films on softened polymer blends of Polystyrene (PS)/Poly(2-vinyl pyridine) (P2VP), PS/Poly(4-vinylpyridine) (P4VP), and Poly(vinylpyrollidone) (PVP)/P4VP at a rate of 0.4 nm/s held at a temperature of 457 K in vacuum of 8 × 10 -6 Torr by evaporation are deposited. These silver films were characterized by their electrical behavior, optical properties and Scanning electron microscopy (SEM). Silver films deposited on softened PS, and PVP give rise to a very high room temperature resistance approaching that of the substrate resistance due to the formation of a highly agglomerated structure. On the other hand, silver films on softened P2VP and P4VP gives rise to a room ...