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2003
Neagu, E. R., J. N. Marat-Mendes, and C. J. Dias. "Dielectric relaxation at ultra low frequency." Ferroelectrics. 294 (2003): 3-11. Abstract
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Monteiro, R. C. C., and M. M. R. A. Lima. "Effect of compaction on the sintering of borosilicate glass/alumina composites." Journal of the European Ceramic Society. 23 (2003): 1813-1818. AbstractWebsite

The effect of initial compaction on the sintering of borosilicate glass matrix composites reinforced with 25 vol.% alumina (Al2O3) particles has been studied using powder compacts that were uniaxially pressed at 74, 200 and 370 MPa. The sintering behaviour of the samples heated in the temperature range 850-1150 °C was investigated by density measurement, axial and radial shrinkage measurement and microstructural observation. The density of the sintered composites increased continuously with temperature for compacts pressed at 74 MPa, while for compacts pressed at 200 and 370 MPa it reached the maximum value at 1050 °C and at higher temperatures it decreased slightly due to swelling. The results showed anisotropic shrinkage behaviour for all the samples, which exhibited an axial shrinkage higher than the radial shrinkage, and the anisotropic character increased with the initial compaction pressure. © 2003 Elsevier Science Ltd. All rights reserved.

Monteiro, R. C. C., and M. M. R. A. Lima. "Effect of compaction on the sintering of borosilicate glass/alumina composites." Journal of the European Ceramic Society. 23 (2003): 1813-1818. Abstract
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Ferreira, I., M. E. V. Costa, E. Fortunato, and R. Martins. "From porous to compact films by changing the onset conditions of HW-CVD process." Thin solid films. 427.1 (2003): 225-230. Abstract
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Fortunato, E., A. Goncalves, A. Marques, V. Assuncao, I. Ferreira, H. Aguas, L. Pereira, and R. Martins. "Gallium zinc oxide coated polymeric substrates for optoelectronic applications." MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS. 769 (2003): 291-296. Abstract
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Fortunato, E., A. Gonçalves, A. Marques, V. Assunção, I. Ferreira, H. Águas, L. Pereira, and R. Martins. "Gallium zinc oxide coated polymeric substrates for optoelectronic applications." MRS Proceedings. Vol. 769. Cambridge University Press, 2003. H9-4. Abstract
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Fortunato, Elvira, Alexandra Goncalves, Vitor Assuncao, António Marques, Hugo Águas, Luıs Pereira, Isabel Ferreira, and Rodrigo Martins. "Growth of ZnO: Ga thin films at room temperature on polymeric substrates: thickness dependence." Thin Solid Films. 442.1 (2003): 121-126. Abstract
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Fortunato, Elvira, Alexandra Goncalves, Vitor Assuncao, Antonio Marques, Hugo Aguas, Isabel Ferreira, Rodrigo Martins, and others. "Growth of ZnO: Ga thin films at room temperature on polymeric substrates: thickness dependence." Thin Solid Films. 442 (2003): 121-126. Abstract
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Bender, Marcus, Elvira Fortunato, Patrícia Nunes, Isabel Ferreira, António Marques, Rodrigo Martins, Nikos Katsarakis, Volker Cimalla, and George Kiriakidis. "Highly sensitive ZnO ozone detectors at room temperature." Japanese journal of applied physics. 42 (2003): 435. Abstract
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Assuncao, V., E. Fortunato, A. Marques, H. Aguas, I. Ferreira, M. E. V. Costa, and R. Martins. "Influence of the deposition pressure on the properties of transparent and conductive ZnO: Ga thin-film produced by rf sputtering at room temperature." Thin Solid Films. 427.1 (2003): 401-405. Abstract
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Assuncao, V., E. Fortunato, A. Marques, H. Aguas, I. Ferreira, M. E. V. Costa, and R. Martins. "Influence of the deposition pressure on the properties of transparent and conductive ZnO: Ga thin-film produced by rf sputtering at room temperature." Thin Solid Films. 427 (2003): 401-405. Abstract
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Fortunato, Elvira, V. Assunção, A. Marques, H. Águas, Rodrigo Martins, and M. E. V. Costa. "Influence of the deposition pressure on the properties of transparent and conductive ZnO: Ga thin-film produced by rf sputtering at room temperature." (2003). Abstract
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Aguas, H., V. Silva, E. Fortunato, S. Lebib, P. Roca i Cabarrocas, I. Ferreira, L. Guimaraes, and R. Martins. "Large area deposition of polymorphous silicon by plasma enhanced chemical vapor deposition at 27.12 MHz and 13.56 MHz." Japanese journal of applied physics. 42 (2003): 4935. Abstract
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Águas, H., V. Silva, E. Fortunato, S. Lebib, Roca P. i Cabarrocas, I. Ferreira, L. Guimarães, and R. Martins. "Large area deposition of polymorphous silicon by plasma enhanced chemical vapor deposition at 27.12 MHz and 13.56 MHz." Japanese journal of applied physics. 42 (2003): 4935. Abstract
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Assunção, Vitor, Elvira Fortunato, António Marques, Alexandra Gonçalves, Isabel Ferreira, Hugo Águas, and Rodrigo Martins. "New challenges on gallium-doped zinc oxide films prepared by rf magnetron sputtering." Thin Solid Films. 442.1 (2003): 102-106. Abstract
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Assunção, Vitor, Elvira Fortunato, António Marques, Alexandra Gonçalves, Isabel Ferreira, Hugo Águas, and Rodrigo Martins. "New challenges on gallium-doped zinc oxide films prepared by rf magnetron sputtering." Thin Solid Films. 442 (2003): 102-106. Abstract
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Mateus, O., and MT Antunes. "A new dinosaur tracksite in the Lower Cretaceous of Portugal." Ciências da Terra (UNL). 15 (2003): 253-262. Abstract
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Araújo, J., J. D. Mitchell, and N. Silva. "On generating countable sets of endomorphisms." Algebra Universalis. 50 (2003): 61-67. AbstractWebsite
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Aguas, H., Roca P. i Cabarrocas, S. Lebib, V. Silva, E. Fortunato, and R. Martins. "Polymorphous silicon deposited in large area reactor at 13 and 27 MHz." Thin Solid Films. 427 (2003): 6-10. Abstract
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Martins, Rodrigo, Hugo Águas, Isabel Ferreira, Elvira Fortunato, Sarra Lebib, P. Roca i Cabarrocas, and Leopoldo Guimarães. "Polymorphous silicon films deposited at 27.12 MHz." Chemical Vapor Deposition. 9.6 (2003): 333-337. Abstract
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i Martins, R.a, Águas Ferreira Fortunato Lebib Roca Cabarrocas Guimarães H. a I. a. "Polymorphous Silicon Films Deposited at 27.12 MHz." Advanced Materials. 15 (2003): 333-337. AbstractWebsite

This paper describes, for the first time, a method of producing polymorphous silicon (pm-Si:H) films by plasma-enhanced (PE) CVD, using an excitation frequency of 27.12 MHz. The aim is to produce, at high growth rates, nanostructured films that are more stable than the conventional amorphous or polymorphous silicon films grown by PECVD at 13.56 MHz. The processing data show that, at 27.12 MHz, the pm-Si:H films are produced close to the transition region from amorphous to microcrystalline silicon films, at a growth rate of about 0.3 nm s-1, using pressures above 160 Pa. Apart from that, the analysis of the exodiffusion, spectroscopic ellipsometry (SE), and micro Raman data reveal that these films are more dense and compact than the polymorphous films grown at 13.56 MHz.

Martins, R.a, Águas Ferreira Fortunato Lebib Cabarrocas Guimarães H. a I. a. "Polymorphous silicon films deposited at 27.12 MHz." Chemical Vapor Deposition. 9 (2003): 333-337. AbstractWebsite

This paper describes, for the first time, a method of producing polymorphous silicon (pm-Si:H) films by plasma-enhanced (PE) CVD, using an excitation frequency of 27.12 MHz. The aim is to produce, at high growth rates, nanostructured films that are more stable than the conventional amorphous or polymorphous silicon films grown by PECVD at 13.56 MHz. The processing data show that, at 27.12 MHz, the pm-Si:H films are produced close to the transition region from amorphous to microcrystalline silicon films, at a growth rate of about 0.3 nms-1, using pressures above 160 Pa. Apart from that, the analysis of the exodiffusion, spectroscopic ellipsometry (SE), and micro Raman data reveal that these films are more dense and compact than the polymorphous films grown at 13.56 MHz.

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