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2003
Ferreira, I., E. Fortunato, and R. Martins. "Combining HW-CVD and PECVD techniques to produce a-Si: H films." Thin solid films. 427.1 (2003): 231-235. Abstract
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Lanca, M. C., C. J. Dias, D. K. Dasgupta, J. Marat-Mendes, and Ieee Ieee Comparative study of dielectric relaxation spectra of electrically and thermally aged low density polyethylene., 2003. AbstractWebsite

Low-density polyethylene (LDPE) films were thermally aged in a sodium chloride aqueous solution at constant temperature (thermal aging). Some of the samples were simultaneously immersed in solution and subjected to an electric AC field (electrical aging). The dielectric relaxation spectra at 30 degreesC in the range of 10(-5) Hz to 10(5) Hz were obtained for unaged and aged samples. For the low frequency (LF) region (10(-5) Hz to 10(-1) Hz) the time domain technique was used. A lock-in amplifier was used for the 10(-1) Hz to 10(1) Hz medium frequency (MF) region. While for the high frequency (HF), 10(-1) Hz to 10(5) Hz, RLC bridge measurements were performed. The main differences can be seen between electrically, thermally aged and unaged LDPE in the HF and LF regions. The LF peak is a broad peak related to localized space charge injection driven by the electric field. For electrically aged samples this peak increases in an earlier stage of electrical aging, decreasing afterwards. While in thermally aged samples the peak amplitude always increases with aging time. Finally the HF shows the beginning of a peak due to the gamma and beta transitions. This peak decreases with aging disappearing for the most aged samples.

Lanca, M. C., C. J. Dias, D. K. Dasgupta, J. Marat-Mendes, and Ieee Ieee Comparative study of dielectric relaxation spectra of electrically and thermally aged low density polyethylene., 2003. AbstractWebsite

Low-density polyethylene (LDPE) films were thermally aged in a sodium chloride aqueous solution at constant temperature (thermal aging). Some of the samples were simultaneously immersed in solution and subjected to an electric AC field (electrical aging). The dielectric relaxation spectra at 30 degreesC in the range of 10(-5) Hz to 10(5) Hz were obtained for unaged and aged samples. For the low frequency (LF) region (10(-5) Hz to 10(-1) Hz) the time domain technique was used. A lock-in amplifier was used for the 10(-1) Hz to 10(1) Hz medium frequency (MF) region. While for the high frequency (HF), 10(-1) Hz to 10(5) Hz, RLC bridge measurements were performed. The main differences can be seen between electrically, thermally aged and unaged LDPE in the HF and LF regions. The LF peak is a broad peak related to localized space charge injection driven by the electric field. For electrically aged samples this peak increases in an earlier stage of electrical aging, decreasing afterwards. While in thermally aged samples the peak amplitude always increases with aging time. Finally the HF shows the beginning of a peak due to the gamma and beta transitions. This peak decreases with aging disappearing for the most aged samples.

Lanca, M. C., C. J. Dias, D. K. Dasgupta, J. Marat-Mendes, and Ieee. "Comparative study of dielectric relaxation spectra of electrically and thermally aged low density polyethylene." 2003 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (2003): 161-164. Abstract
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Louren{\c c}o, João, Jos\´ e, and Vitor Moreira. "Control and Debugging of Distributed Programs Using Fiddle." CoRR. cs.DC/0309049 (2003).Website
Aguas, H., L. Pereira, A. Goullet, R. Silva, E. Fortunato, and R. Martins. "Correlation Between the Tunneling Oxide and IV Curves of MIS Photodiodes." MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS. Vol. 762. Warrendale, Pa.; Materials Research Society; 1999, 2003. 217-222. Abstract
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Aguas, H., L. Pereira, A. Goullet, R. Silva, E. Fortunato, R. Martins, JR Abelson, G. Ganguly, H. Matsumura, J. Robertson, and EA Schiff. "Correlation between the tunnelling oxide and I-V curves of MIS photodiodes." Amorphous and Nanocrystalline Silicon-Based Films-2003. Vol. 762. 2003. 217-222. Abstract
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Águas, H., L. Pereira, A. Goullet, R. Silva, E. Fortunato, and R. Martins. "Correlation Between the Tunnelling Oxide and IV Curves of MIS Photodiodes." MRS Proceedings. Vol. 762. Cambridge University Press, 2003. A18-16. Abstract
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Inacio, P., J. N. Marat-Mendes, and C. J. Dias. "Development of a biosensor based on a piezoelectric film." Ferroelectrics. 293 (2003): 351-356. AbstractWebsite
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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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Milàn, J., and O. Mateus. "Fra strandbred til museum p{\aa} syv dage: historien om et gigantisk dinosaur fodspor." Varv (2003): 8-14. Abstract
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Milan, Jesper, and Octavio Mateus. "Fra strandbred til museum på syv dage – historien om et gigantisk dinosaur fodspor." Varv. 2003 (2003): 8-14. Abstract
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Milan, Jesper, and Octavio Mateus. "Fra strandbred til museum på syv dage – historien om et gigantisk dinosaur fodspor." Varv. 2003 (2003): 8-14. 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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