Browsing by Author "201-0400883"

Now showing items 1-9 of 9

    • Characterization of hydrothermal–electrochemical calcium titanate coatings on titanium and biomedical ... 
      Wiff, Juan P.; Fuenzalida, V. M.; Zárate Aliaga, Ramón; Arias, J. L.; Fernández, M. S. (2004)
      Polycrystalline calcium titanate films up to 300 nm in thickness were grown on titanium and Ti6Al4V substrates by the hydrothermal–electrochemical technique in an autoclave at 200 ◦C. The films examined by x-ray ...
    • Chemical composition and phase identification of sodium titanate nanostructures grown from titania by ... 
      Zárate Aliaga, Ramón; Fuentes, S.; Wiff, Juan P.; Fuenzalida, V. M.; Cabrera, A. L. (Elsevier, 2007)
      Fine titanium dioxide particles were hydrothermally treated in a sodium hydroxide aqueous solution. The treatment extended from 1 to 6 days leading to belt-like and wire-like structures of a metastable phase of sodium ...
    • Deep oxidation of aluminum by a DC oxygen plasma 
      Baier Saip, J. A.; Avila, Jonathan I.; Tarrach, G.; Cabrera, A. L.; Fuenzalida Escobar, Víctor; Zárate Aliaga, Ramón; Schuller, I. K. (ELSEVIER SCIENCE SA, 2005-05-31)
      A novel way of oxidising aluminum using a DC oxygen plasma is described. The oxidation is carried out with a pressure of similar to 0.1 bar, an electrical current lower than 3 mA, and a working distance between the electrodes ...
    • FORMATION OF HIERARCHICAL CUO NANOWIRES ON A COPPER SURFACE VIA A ROOM-TEMPERATURE SOLUTION-IMMERSION PROCESS 
      Fuentes, S.; Zárate Aliaga, Ramón; Muñoz, P.; Díaz Droguett, Donovan Enrique (2010)
      CuO nanowires were successfully made through a simple wet chemical method at room temperature by immersing on copper sheets in a 4 M ammonia solution for 4 days and then subjecting it to heat treatment. Immersion time and ...
    • Growth andelectronfield-emissionofsingle-crystallineZnOnanowires 
      Mosquera Vargas, Edgar; Bernal, Jimmy; Zárate Aliaga, Ramón; Mendoza, Frank; Katiyar, Ram S.; Morell, Gerardo (Elsevier B.V., 2012)
      ZnO nanowireswithhighdensityaregrownoverzincfoilbythermalevaporationprocessatrelatively low temperature.Electronmicroscopystudiesconfirmedthattheas-grownnanowiresareofsingle crystalhexagonalwurtzitestructure,growingpre ...
    • Preparation of SrTiO3 nanomaterial by a sol–gel-hydrothermal method 
      Fuentes, S.; Zárate Aliaga, Ramón; Chávez, Edgar; Muñoz, P.; Díaz Droguett, Donovan Enrique; Leyton, P. (Springer, 2010)
      A new synthetic route to obtain high-purity strontium titanate, SrTiO3, using the sol–gel-hydrothermal reaction of TiCl4 and a SrCl2 solution in an oxygen atmosphere has been developed. In the synthesized products the ...
    • Structural characterization of single crystals of sodium titanate nanowires prepared by hydrothermal process 
      Zárate Aliaga, Ramón; Fuentes, S.; Cabrera, A. L.; Fuenzalida, V. M. (ELSEVIER SCIENCE BV, 2008-07-15)
      Na2Ti6O13 nanowires have been synthesized using a simple hydrothermal reaction at 130 1C between TiO2 particles and NaOH aqueous solution. Subsequently the samples were annealed at 500 1C in air for 24 h. Field emission ...
    • Synthesis and characterization of BaTiO3 nanoparticles in oxygen atmosphere 
      Fuentes, S.; Zárate Aliaga, Ramón; Chávez, Edgar; Muñoz, P.; Ayala, M.; Espinoza González, Raúl; Leyton, Patricio (ELSEVIER, 2010-09-03)
      A new synthesis route to obtain high-purity barium titanate, BaTiO3, using the sol–gel-hydrothermal reaction of TiCl4 and a BaCl2 solution in an oxygen atmosphere has been developed. The synthesized BaTiO3 nanoparticles ...
    • Titanium monoxide ultra-thin coatings evaporated onto polycrystalline copper films 
      Zárate Aliaga, Ramón; Fuenzalida, V. M. (Elsevier, 2004)
      We evaporated polycrystalline copper thin films of thickness between 10 and 100nm on silicon substrates with their native oxide under ultra-high-vacuum conditions. Some of them were exposed to air for a period ranging ...