Navegação Engenharias por Autor "Papaleo, Ricardo Meurer"

Resultados 1-2 de 2

    • Bi nanowires modified by 400 keV and 1 MeV Au ions 

      Guerra, D.B.; Müller, Sven; Oliveira, Elisa Magno Nunes de; Fichtner, Paulo Fernando Papaleo; Papaleo, Ricardo Meurer (2018) [Artigo de periódico]
      We report on the modification of the structure and morphology of Bi nanowires of two different diameters (80 or 130 nm) exposed to beams of 400 keV and 1 MeV Au+ until complete wire degradation. For fluences up to ∼1 ion/nm2 ...

    • Nanoporous SiO 2 / Si thin layers produced by ion track etching : dependence on the ion energy and criterion for etchability 

      Dallanora, Arícia Oliveira; Marcondes, Tatiana Lisbôa; Bermudez, Gerardo; Fichtner, Paulo Fernando Papaleo; Trautmann, C.; Toulemonde, M.; Papaleo, Ricardo Meurer (2008) [Artigo de periódico]
      Vitreous SiO2 thin films thermally grown onto Si wafers were bombarded by Au ions with energies from 0.005 to 11.1 MeV/u and by ions at constant velocity 0.1 MeV/u 197Au, 130Te, 75As, 32S, and 19F . Subsequent chemical ...