Writers: L. F. Goncalves; L. S. R. Rocha; C. C. Silva; J. A. Cortés; M. A. Ramirez; A. Z. Simões Keywords: films; Dielectric properties Abstract: Bi3NbO7 (BNO) thin films were deposited on Pt/TiO2/SiO2/Si (100) and LaNiO3 bottom electrode substrates at room temperature from the polymeric precursor method. X-ray powder diffraction was used to […]
Writers: Paulo A. Raymundo-Pereira; Ana C. V. Mascarenhas; Marcos F. S. Teixeira Keywords: Biosensor; Electrochemical Abstract: The mediation of electron-transfer by oxo-bridged dinuclear ruthenium ammine [(bpy)2(NH3)RuIII(µ-O)RuIII(NH3)(bpy)2]4+ for the oxidation of glucose was investigated by cyclic voltammetry. These ruthenium (III) […]
Writers: M.D.P. Silva, R.F. Gonçalves, I.C. Nogueira, V.M. Longo, L. Mondoni, M.G. Moron, Y.V. Santana, E. Longo Keywords: Ag2WO4; Ag2MoO4; Photoluminescence; Morphology; Raman spectroscopy Abstract: Ag2W1 -xMoxO4 (x = 0.0 and 0.50) powders were synthesized […]
Writers: Batagin-Neto, Augusto and Bronze-Uhle, Erika Soares and Graeff, Carlos Frederico de Oliveira Abstract: Melanins represent an important class of natural pigments present in plants and animals that are currently considered to be promising materials […]
Writers: R.S. Andréa, S.M. Zanetti, J.A. Varela, E. Longo Keywords: CaZrO3; Calcium zirconate; Chemical method; Humidity sensor Abstract: CaZrO3 stoichiometric and non-stoichiometric (CaO- and ZrO2-excess) powders were synthesized by a chemical method which is based on polymeric precursors. The mesoporous material […]
Writers: E. Govea-Alcaidea, J.E. Pérez-Fernándeza, I.F. Machadob, R.F. Jardimc, Keywords: Bi-based superconductor; Granular material; Spark-plasma sintering; Finite element method; Transport properties Abstract: Pre-reacted powders of (Bi–Pb)2Sr2Ca2Cu3O10+δ (Bi-2223) were consolidated by using the spark plasma sintering (SPS) technique […]
Writers: Pedro Paulo Silva Ortega , Miguel Angel Ramirez , César Renato Foschini , Filiberto González Garcia , Mario Cilense, Alexandre Zirpoli Simões Keywords: yttrium iron garnet; powder; chemical synthesis; characterization; magnetic properties Abstract: A study was […]
Writers: E. Z. Santos, R. Muccillo Keywords: Zirconia-scandia; Impedance spectroscopy Abstract: Zirconia stabilized with 8-12 mol% scandia shows the highest value of oxide ion conductivity among zirconia-based oxides. However, the cubic-rhombohedral phase transition at approximately 600 […]
Writers: Ana Catarina de Oliveira Gomes, Beatriz Uieda, Andre Akio Tamashiro, Adhemar Collà Ruvolo Filho, Luiz Antonio Pessan Palavras-chave: Membrana polimérica, nanocompósito polimérico, célula a combustível, eletrólito polimérico Resumo: Células a combustível usando membranas poliméricas condutoras […]
Writers: Gomes, Ana C. O.; Machado, Isabela M. M.; Ruvolo Filho, Adhemar; Pessan, Luiz A.; Paranhos, Caio M. Keywords: Membrana polimérica; Nanocompósito polimérico; Célula a combustível; Eletrólito polimérico Abstract: Membranas poliméricas condutoras de íons têm sido cada […]
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