Navegação Ciências Exatas e da Terra por Autor "Baptista, Daniel Lorscheitter"

Resultados 1-9 de 9

    • Characterization of metal oxide-based gas nanosensors and microsensors fabricated via local anodic oxidation using atomic force microscopy 

      Archanjo, Braulio Soares; Fernández Siles, Pablo Roberto; Oliveira, Camilla K. B. Q. M.; Baptista, Daniel Lorscheitter; Neves, Bernardo Ruegger Almeida (2013) [Artigo de periódico]
      Thiswork reports on nanoscale and microscalemetal oxide gas sensors, consisting ofmetal-semiconductor-metal barriers designed via scanning probe microscopy. Two distinctmetal oxides, molybdenum and titaniumoxides, were ...

    • Electron irradiation effects on the nucleation and growth of Au nanoparticles in silicon nitride membranes 

      Timm, Mariana de Mello; Fabrim, Zacarias Eduardo; Marin, Cristiane; Baptista, Daniel Lorscheitter; Fichtner, Paulo Fernando Papaleo (2017) [Artigo de periódico]
      The formation of Au nanoparticles (NPs) in Auþ ion-implanted silicon nitride thin films and membranes was investigated as a function of post-implantation thermal treatments or room temperature electron irradiation at ...

    • In-situ transmission electron microscopy growth of nanoparticles under extreme conditions 

      Luce, Flavia Piegas; Oliviero, Erwan Marie Hubert; Azevedo, Gustavo de Medeiros; Baptista, Daniel Lorscheitter; Fichtner, Paulo Fernando Papaleo (2016) [Artigo de periódico]
      The formation and time resolved behavior of individual Pb nanoparticles embedded in silica have been studied by in-situ transmission electron microscopy observations at high temperatures (400–1100 C) and under 200 keV ...

    • New approach for structural characterization of planar sets of nanoparticles embedded into a solid matrix 

      Sanchez, Dario Ferreira; Marmitt, Gabriel Guterres; Marin, Cristiane; Baptista, Daniel Lorscheitter; Azevedo, Gustavo de Medeiros; Grande, Pedro Luis; Fichtner, Paulo Fernando Papaleo (2013) [Artigo de periódico]
      In this work we demonstrate that Medium Energy Ion Scattering (MEIS) measurements in combination with Transmission Electron Microscopy (TEM) or Grazing Incidence Small Angle X-Ray Scattering (GISAXS) can provide a complete ...

    • A new non-complex synthesis of NiO nanofoams for hydrogen storage applications 

      Thill, Alisson Steffli; Lima, Dirléia dos Santos; Pérez Lopez, Oscar William; Manfro, Robinson Luciano; Souza, Mariana de Mattos Vieira Mello; Baptista, Daniel Lorscheitter; Archanjo, Braulio Soares; Poletto, Fernanda; Bernardi, Fabiano (2023) [Artigo de periódico]
      The use of nanofoams is beneficial for a wide range of applications ranging from catalysis to plasmonics. The present communication reports on the non-complex synthesis of NiO nanofoams and their use for hydrogen storage ...

    • On the structural and chemical characteristics of Co/Al2O3/ graphene interfaces for graphene spintronic devices 

      Canto, B.; Gouvêa, Cristol de Paiva; Archanjo, Braulio Soares; Schmidt, Joao Edgar; Baptista, Daniel Lorscheitter (2015) [Artigo de periódico]
      We report a detailed investigation of the structural and chemical characteristics of thin evaporated Al2O3 tunnel barriers of variable thickness grown onto single-layer graphene sheets. Advanced electron microscopy and ...

    • Resonance Raman spectroscopy in Si and C ion-implanted double-wall carbon nanotubes 

      Saraiva, Gilberto Dantas; Souza Filho, Antonio Gomes; Barros, Eduardo Bedê; Mendes Filho, Josué; Moreira, Eduardo Ceretta; Fagan, Solange Binoto; Baptista, Daniel Lorscheitter; Kim, Yoong Ahm; Muramatsu, Hiroyuki; Endo, Morinobu; Dresselhaus, M. S. (2009) [Artigo de periódico]
      The effect of 170 keV Si and 100 keV C ion bombardment on the structure and properties of highly pure, double-wall carbon nanotubes has been investigated using resonance Raman spectroscopy. The implantations were performed ...

    • Turn on of new electronic paths in Fe-SiO2 granular thin film 

      Boff, Marco Aurelio Silveira; Hinrichs, Ruth; Canto, B.; Mesquita, Fabiano; Baptista, Daniel Lorscheitter; Fraga, Gilberto Luiz Ferreira (2014) [Artigo de periódico]
      The electrical properties of Fe-SiO2 have been studied in the low-field regime (eDV kBT), varying the injected current and the bias potential. Superparamagnetism and a resistance drop of 4400X (for a voltage variation of ...

    • Unraveling structural and compositional information in 3D FinFET electronic devices 

      Trombini, Henrique; Marmitt, Gabriel Guterres; Vellame, Igor Alencar; Baptista, Daniel Lorscheitter; Reboh, Shay; Mazen, Frédéric; Pinheiro, Rafael Bortolin; Sanchez, Dario Ferreira; Senna, Carlos Alberto; Archanjo, Braulio Soares; Achete, Carlos A.; Grande, Pedro Luis (2019) [Artigo de periódico]
      Non-planar Fin Field Effect Transistors (FinFET) are already present in modern devices. The evolution from the well-established 2D planar technology to the design of 3D nanostructures rose new fabrication processes, but a ...