Effects of donor density on power-law response in tin dioxide gas sensors Abstract: We investigated the power-law responses in two types of tin dioxide (SnO2) films: one made from nanosized grains and another from from […]
Coupled electronic and morphologic changes in graphene oxide upon electrochemical reduction Abstract: A systematic study of the electrochemical reduction of graphene oxide was performed. The graphene oxide was reduced electrochemically in phosphate buffer solution by applying […]
Electrical and mechanical characterization of a flexible conducting composite Abstract: Composite films made of poly(vinylidene fluoride) (PVDF) and conducting particles of carbon black (CB) were prepared using a hot press. Using different volume fractions of […]
Writers: A.A. Felix, E. Longo, J.A. Varela, M.O. Orlandi Keywords: CaCu3Ti4O12; Thin film; Conductivity; Gas sensing; Thermopower measurement Abstract: In this work, CaCu3Ti4O12 (CCTO) thin films were synthesized with the polymeric precursor method and characterized […]
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: Michael J.da Silva, Aléx O.Sanches, Luiz F. Malmonge, José A. Malmonge Keywords: natural rubber, polyaniline, electrical conductivity, percolation threshold Abstract: A composite of natural rubber (NR) with polyaniline (PANI) was obtained by mixing an aqueous dispersion of […]
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