3 documents found, page 1 of 1
Enhanced UV flexible photodetectors and photocatalysts based on TiO2 nanoplatforms
Nunes, D.; Pimentel, A.; Araujo, A.; Calmeiro, T. R.; Panigrahi, S.; Pinto, J. V.; Barquinha, P.; Gama, F. M.; Fortunato, E.; Martins, R.Abstract: In this study, titanium dioxide (TiO2) nanostructured films were synthesized under microwave irradiation through low temperature synthesis (80 °C) and integrated in ultraviolet (UV) photodetectors and as photocatalysts. Bacterial nanocellulose (BNC), tracing paper, and polyester film were tested as substrates, since they are inexpensive, flexible, recyclable, lightweight, and when associated to low te...
Brass smelting dust as a source of ZnO in the production of targets used in mag...
Monteiro, R. C. C.; Kullberg, A. T.; Lopes, A. A. S.; Pinto, J. V.; Nunes, D.; Gonçalves, A.; Fortunato, E.; Castro, F.The feasibility of using a zinc oxide rich waste (ZnO>95%), dust originated in the brass smelting industrial process, as a raw material to produce targets to be used in radiofrequency magnetron sputtering (RFMS) deposition of ZnO thin films was investigated. The ZnO waste was characterized in terms of chemical and mineralogical compositions and particle size distribution. The targets were prepared by uniaxial p...
Formation of oriented nickel aggregates in rutile single crystals by Ni implant...
Cruz, M. M.; Silva, R. C. da; Pinto, J. V.; Borges, R. P.; Franco, N.; Casaca, A.; Alves, E.; Godinho, M.The magnetic and electrical properties of Ni implanted single crystalline TiO2 rutile were studied for nominal implanted fluences between 0.5 x 10(17) cm(-2) and 2.0 x 10(17) cm(-2) with 150 keV energy, corresponding to maximum atomic concentrations between 9 at% and 27 at% at 65 nm depth, in order to study the formation of metallic oriented aggregates. The results indicate that the as implanted crystals exhibi...