Publications

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Figueiredo, MO, JP Veiga, and T. Pereira da Silva. "Ageing of high-lead glazes in XVI - XVII century tiles." Proceedings of the International Conference on Non-Destructive Testing and Micro-Analysis for the Diagnostics and Conservation of the Cultural and Environmental Heritage. 2002. 8. Abstract
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Figueiredo, MO, TP Silva, and JP Veiga. "Analysis of degradation phenomena in ancient, traditional and improved building materials of historical monuments." Applied Physics a-Materials Science & Processing. 92 (2008): 151-154. Abstract
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Figueiredo, MO, TP Silva, and JP Veiga. "Analysis of degradation phenomena in ancient, traditional and improved building materials of historical monuments." Applied Physics A. 92 (2008): 151-154. Abstract
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Figueiredo, Ondina M., Teresa Pereira Silva, and João Pedro Veiga. "Ancient Chinese blue-and-white porcelain glazes: can we measure the oxidation state of cobalt through X-ray absorption spectroscopy?" 1º Encontro Nacional dos Utilizadores da Radiação de Sincrotrão= 1st Meeting of Synchrotron Radiation Users from Portugal. 2012. Abstract
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Figueiredo, Ondina M., Teresa Pereira Silva, and João Pedro Veiga. "Ancient glazed ceramic tiles: a long-term, study from the remediation of environmental impacts to the non-destructive characterization of materials." Proceedings of the International Seminar on Conservation of Glazed Ceramic Tiles: Research and Practice. 2009. Abstract
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Figueiredo, E., J. Fonte, A. Lima, JP Veiga, R. J. C. Silva, and J. Mirão. "Ancient tin production: Slags from the Iron Age Carvalhelhos hillfort (NW Iberian Peninsula)." Journal of Archaeological Science. 93 (2018): 1-16.
Silva, Teresa Pereira, Daniel PS Oliveira, João Pedro Veiga, Diogo Rosa, and Ondina M. Figueiredo. "An approach to the binding state of indium in natural chalcogenides through the analysis of In L3 edge XANES spectra." 1º Encontro Nacional dos Utilizadores da Radiação de Sincrotrão= 1st Meeting of Synchrotron Radiation Users from Portugal. 2012. Abstract
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Figueiredo, MO, TP Silva, JP Veiga, AMD Diogo, and L. Trindade. "Archaeology of Lisbon Old City: ceramic crucibles from pre-XVIIIth century metallurgical foundries." Applied Physics a-Materials Science & Processing. 79 (2004): 327-329. Abstract
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Figueiredo, MO, Pereira T. da Silva, JP Veiga, Leal C. Gomes, and V. De Andrade. "The blue colouring of beryls from Licungo, Mozambique: an X-ray absorption spectroscopy study at the iron K-edge." Mineralogical Magazine. 72 (2008): 175-178. Abstract
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Figueiredo, MO, T. Pereira da Silva, JP Veiga, C. Leal Gomes, and V. De Andrade. "The blue colouring of beryls from Licungo, Mozambique: an X-ray absorption spectroscopy study at the iron K-edge." Mineralogical Magazine. 72 (2008): 175-178. Abstract
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Figueiredo, MO, TP Silva, and JP Veiga. "The blue of iron in mineral pigments: a Fe K-edge XANES study of vivianite." Applied Physics a-Materials Science & Processing. 99 (2010): 357-361. Abstract
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Figueiredo, MO, TP Silva, and JP Veiga. "The blue of iron in mineral pigments: a Fe K-edge XANES study of vivianite." Applied Physics A. 99 (2010): 357-361. Abstract
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Figueiredo, Ondina M., Teresa Pereira Silva, João Pedro Veiga, Maria Isabel Prudêncio, Maria Isabel Dias, MA Matos, and AM Pais. "Blue pigments in XVI-XVII century glazes: a comparative study between Portuguese faiences and Chinese porcelains." Selected Papers Archaeological and Arts Issues in Materials Science, Univ. Nac. Autónoma de México, 2010 (2010). Abstract
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Figueiredo, Ondina M., Teresa Pereira Silva, João Pedro Veiga, Isabel M. Prudêncio, Isabel M. Dias, Maria Antónia Matos, and Alexandre Manuel Pais. "Blue pigments in XVI-XVII century glazes: a comparative study between portuguese faiences and contemporary chinese porcelains manufactured for portuguese market." 18th International Materials Research Congress & 2nd Latin-American Symposium Physics & Chemistry Methods in Archeology, Art and Cultural Heritage Conservation, LASMAC-IMRS2009, August 16-20, 2009. 2009. Abstract
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Veiga, JP, and MO Figueiredo. "Calcium in ancient glazes and glasses: a XAFS study." Applied Physics a-Materials Science & Processing. 92 (2008): 229-233. Abstract
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Veiga, JP, and MO Figueiredo. "Calcium in ancient glazes and glasses: a XAFS study." Applied Physics A. 92 (2008): 229-233. Abstract
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Figueiredo, MO, and JP Veiga. "Characterisation of materials used in the aqueduct of Zaghouan-Carthage." Protection and Conservation of the Cultural Heritage in the Mediterranean Cities: Proceedings of the 5th International Symposium, Sevilla, Spain, 5-8 April 2000. CRC Press, 2002. 101. Abstract
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Alvarez, A., R. Estrada, F. Gueddari, MO Figuiredo, JP Veiga, and L. Vilaseca. "Characterisation of materials used in the aqueduct of Zaghouan-Carthage (Tunisia) along construction and restoration periods." Protection and Conservation of the Cultural Heritage of the Mediterranean Cities. Swets & Zeitlinger, Lisse (2002): 101-106. Abstract
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Figueiredo, MO, JP Veiga, TP Silva, J. P. Mirao, and S. Pascarelli. "Chemistry versus phase constitution of yellow ancient tile glazes: A non-destructive insight through XAS." Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions With Materials and Atoms. 238 (2005): 134-137. Abstract
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Figueiredo, Ondina M., João Pedro Veiga, and Teresa Pereira Silva. "Chromophore behaviour of iron, copper, cobalt and antimony in ancient tile, faience and porcelain glazes plus archaeological glass beads: an overview on X-ray absorption near-edge spectroscopy studies." Ciência & Tecnologia dos Materiais (2012). Abstract
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Veiga, JP, and MO Figueiredo. "Copper blue in an ancient glass bead: a XANES study." Applied Physics a-Materials Science & Processing. 83 (2006): 547-550. Abstract
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Dias, MI, Ondina M. Figueiredo, Antónia M. Matos, A. Pais, Maria Isabel Prudêncio, Teresa Pereira Silva, Christopher Ian Burbidge, A. L. Rodrigues, and João Pedro Veiga. "Datação, autenticidade, materiais e pigmentos. Estudos laboratoriais sobre faiança portuguesa e porcelana chinesa produzida para o mercado português, séculos XVI a XVIII." IX Congresso Ibérico de Arqueometria (CIA). 2011. Abstract
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Perdigao, Jorge, Ana M. Pinto, Regina C. C. Monteiro, Francisco Fernandes, Pedro Laranjeira, and Joao P. Veiga. "Degradation of dental ZrO 2-based materials after hydrothermal fatigue. Part I: XRD, XRF, and FESEM analyses." Dental materials journal. 31 (2012): 256-265. Abstract
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Perdigao, Jorge, Ana M. Pinto, Regina C. C. Monteiro, Francisco Braz M. Fernandes, Pedro Laranjeira, and Joao P. Veiga. "Degradation of dental ZrO2-based materials after hydrothermal fatigue. Part I: XRD, XRF, and FESEM analyses (vol 31, pg 256, 2012)." DENTAL MATERIALS JOURNAL. 31 (2012): 499. Abstract
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E
Rodrigues, Alexandra P., Pedro M. P. Santos, João Pedro Veiga, Maria Helena Casimiro, and Luís M. Ferreira. "Electron Beam Irradiation on the Production of a Si- and Zr-Based Hybrid Material: A Study by FTIR and WDXRF." Materials. 16 (2023). AbstractWebsite

Sol-gel production of hybrid materials has, to some extent, revolutionised materials’ engineering and the way science and technology perceive the creation of new materials. Despite that, the method presents some limitations that are circumvented by radiation processing. Electron beam irradiation was used to promote synthesis of hybrid structures while using silanol-terminated PDMS, TEOS and TPOZ as precursors. Evaluation of the method’s performance was executed by gel fraction determination, WDXRF and FTIR-ATR. Results showed that, although there is some pre-irradiation reactivity between precursors, radiolysis induces scission on multiple sites of precursor’s structures, which induces hybrid network formation to a greater extent. Characterisation allowed determining electron beam irradiation to be effective in the creation of Si–O–Zr bonds, resulting in the production of a Class II hybrid material.