Project/scholarship details
- Project/scholarship ID
69362
- Reference
PTDC/CTM/69362/2006
- FundRef URI
- Funder
FCT - Fundação para a Ciência e a Tecnologia, I.P.
- Funder's country
Portugal
- Funding program
5876-PPCDTI
- Funding amount
108,000.00 €
- Start date
2008-01-01
- End date
2010-12-31
Documents
Influence of the chemical and electronic structure on the electrical behavior o...
Carvalho, P.; Chappé, J. M.; Cunha, L.; Lanceros-Méndez, S.; Alpuim, P.; Vaz, F.; Alves, E.; Rousselot, C.; Espinós, J. P.; Gonzalez-Elipe, A. R.This work is devoted to the investigation of decorative zirconium oxynitride, ZrOxNy, films prepared by dc reactive magnetron sputtering, using a 17:3 nitrogen-to-oxygen-ratio gas mixture. The color of the films changed from metallic-like, very bright yellow pale, and golden yellow, for low gas mixture flows [from 0 to about 9 SCCM (SCCM denotes cubic centimeter per minute at STP)] to red brownish for intermedi...
Structural and Mechanical Properties of AZOY Thin Films Deposited on Flexible S...
Oliveira, C.; Costa, Carlos Miguel Silva; Rebouta, L.; Viseu, T. M. R.; de Lacerda-Arôso, T.; Lanceros-Méndez, S.; Alves, E.Transparent conducting Al doped ZnO films have been deposited by do magnetron sputtering, on class and polymer substrates at room temperature. Depositions have been carried out front an AZOY (contains a small amount of Y2O3 in addition to Al2O3 and ZnO) target under different conditions such as working pressure, substrate bias voltage and oxygen flow rate. The crystallinity of the Al doped ZnO films has been im...
Estudo das propriedades físicas do oxicarboneto de titânio usando a teoria do f...
Pinto, Hugo ManuelDissertação de mestrado em Física dos Materiais Avançados (área de especialização em Métodos Computacionais e Teóricos em Física da Matéria Condensada); Neste trabalho é apresentado um estudo teórico sobre as propriedades físicas do oxicarboneto de titânio. Todos os cálculos foram realizados com o código VASP que é uma implementação da teoria do funcional da densidade com pseudopotenciais. Foi calculada a varia...
Properties changes of Ti(C, O, N) films prepared by PVD : the effect of reactiv...
Cunha, L.; Moura, C.; Vaz, F.; Chappé, J. M.; Olteanu, C.; Munteanu, D.; Munteanu, A.Dark Ti-C-O-N thin films were deposited by dc reactive magnetron sputtering. A titanium target was sputtered while three different gas flows were injected into the deposition chamber: argon (working gas), acetylene and a mixture of oxygen and nitrogen (reactive gases). The films were produced with variation of the gases flow rates, maintaining the remaining parameters constant. Varying the ratio between the rea...
Structural and electrical properties of Al doped ZnO thin films deposited at ro...
Oliveira, C.; Rebouta, L.; de Lacerda-Arôso, T.; Lanceros-Méndez, S.; Viseu, T. M. R.; Tavares, C. J.; Tovar, J.; Ferdov, S.; Alves, E.Transparent, conducting, Al-doped ZnO films have been deposited, by dc and pulsed dc magnetron sputtering, on glass and electroactive polymer (poly(vinylidene fluoride)-PVDF) substrates. Samples have been prepared at room temperature varying the argon sputtering pressure, after optimizing other processing conditions. All ZnO:Al films are polycrystalline and preferentially oriented along the [002] axis. Electric...
Enhancement of the dielectric constant and thermal properties of α-Poly(vinylid...
Lopes, Ana Catarina; Silva, Marco Pinto; Gonçalves, Renato; Pereira, Manuel F. R.; Botelho, Gabriela; Fonseca, A. M.; Lanceros-Méndez, S.Different commercial Y zeolites derivate from faujasite structure with similar total Si/Al ratio, NaY (Si/Al = 2.83), HY (Si/Al = 2.80), and HUSY (Si/Al = 3.00), but different framework Si/Al ratios were used to prepare α-poly(vinylidene fluoride) (α-PVDF)/zeolite nanocomposites. Structural and textural characterization of different Y zeolites was obtained by XRD, FTIR, elemental analysis and nitrogen adsorptio...
Lab-on-a-chip with β-poly(vinylidene fluoride) based acoustic microagitation
Cardoso, Vanessa Fernandes; Catarino, Susana Oliveira; Nunes, J. Serrado; Rebouta, L.; Rocha, J. G.; Lanceros-Méndez, S.; Minas, GraçaThis paper reports a fully integrated disposable labon- a-chip with acoustic microagitation based on a piezoelectric β-poly(vinylidene fluoride) (β-PVDF) polymer. The device can be used for the measurement, by optical absorption spectroscopy, of biochemical parameters in physiological fluids. It comprises two dies: the fluidic die that contains the reaction chambers fabricated in SU-8 and the β-PVDF polymer dep...
AlNxOy thin films deposited by DC reactive magnetron sputtering
Borges, Joel Nuno Pinto; Vaz, F.; Marques, L.AlNxOy thin films were produced by DC reactive magnetron sputtering, using an atmosphere of argon and a reactive gas mixture of nitrogen and oxygen, for a wide range of partial pressures of reactive gas. During the deposition, the discharge current was kept constant and the discharge parameters were monitored. The deposition rate, chemical composition, morphology, structure and electrical resistivity of the coa...
Otimização do processo de deposição de oxinitretos metálicos por pulverização r...
Borges, Joel Nuno PintoTese de doutoramento em Ciências (área de especialização em Física); O sistema ternário de oxinitreto de alumínio (AlNxOy) oferece a possibilidade de obter um gradiente de respostas, combinando as propriedades do Al, AlN e do Al2O3 no A evolução da taxa de deposição dos filmes foi também correlacionada com o aumento da pressão parcial de gás reativo e com as características da deposição, encontrando-se quatro t...
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