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- Discover MaterialsPublication . Martins, Rodrigo; DCM - Departamento de Ciência dos Materiais; DiscoverToday we are engaged in promoting science for the beneft of the whole world and to create a better standard of living for all. This implies that we need to exploit the activators able to answer to the demands of such relevant challenges as far as creativity and innovation are concerned. In this respect, materials ofer a variety of solutions that stem from, or have been enhanced by, the perception we have that “Materials are everywhere—even in our body!”. Moreover, we must avoid residues as waste through reuse, recycling and circularity to serve a Green Agenda and bring prosperity for all. Also, our future developments will be grounded in the new capabilities ofered by digital and communication techniques. These open the challenges of artifcial intelligence, industry 4.0 technologies, the Internet of Things (IoT), or Internet of Everything (IoE), and bring new relationships, which will have an important impact on discovering new materials.
- The Mortars of Built Cultural HeritagePublication . de Carvalho, Fernanda Barroso Bruno; Sousa, Pedro; Leal, Nuno; Simão, Joaquim; Kavoulaki, Elissavet; Lima, Maria Margarida; da Silva, Teresa Pereira; Águas, Hugo; Padeletti, Giuseppina; Veiga, João Pedro Botelho; DCM - Departamento de Ciência dos Materiais; CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N); GeoBioTec - Geobiociências, Geoengenharias e Geotecnologias; DCT - Departamento de Ciências da Terra; DCR - Departamento de Conservação e Restauro; MDPI - Multidisciplinary Digital Publishing InstituteThe study and characterization of mortars is generally related to the knowledge of the properties of the material, which guarantee or improve its performance and durability. When we consider the study of historical mortars, the main objective is to understand the characteristics of the material and how it has reached the present day, considering that, often, the time of its preparation and application is separated from the present by a long period of time, perhaps centuries, and is thus difficult to specify. This type of study may give indications on historical issues relevant to the understanding of a particular site or monument and, in addition, can assist in actions related to its preservation. Mortars can be used with different functions, ranging from structural function, protection, or finish, which requires distinct properties that are suitable for this functionality. It is necessary to consider that the desired characteristics, after drying the mortar, will depend on a set of factors, including the selection and quality of the raw material, the proportion between the main components, the way they are prepared and applied, and the environmental conditions they will be subjected to over time. Furthermore, the larger the monument is, the greater the chances of changes, reconstructions or interventions, including materials prepared in different periods with different raw materials and techniques. This is precisely the case of the Palace of Knossos, located near the Heraklion in Crete. It is estimated that the first palace was built in 2000 B.C.; however, it was destroyed and rebuilt more majestically in 1700 B.C. The definitive abandonment of the palace would have occurred around 1450 B.C., but the site where it was built maintained its importance for many centuries. Excavated at the beginning of the 20th century, the Palace of Knossos is one of the most important archaeological sites in Europe, both for its size and the complexity of its plant, with architectural solutions worthy of a well-developed civilization, as well as for the many reclaimed materials and frescos found. In addition to all of the material wealth found in its excavation, the palace has undergone peculiar historical conservation including the reconstruction of many of its structures, even as late as the early 20th century, all considered of great importance for the history of the monument. For this study, samples of mortars were collected at different points of the Palace of Knossos, both from areas of archaeological remains as well as from reconstructed areas. For the characterization, we opted for a multi-analyses approach which involved optical microscopy observation, X-ray fluorescence, X-ray diffraction, FTIR, -Raman, simultaneous thermogravimetry and differential thermal analysis. The results obtained indicated that the samples were mostly lime mortars with different hydraulicity indexes produced from local raw materials. The results also indicated that the samples presented considerable differences depending on the area in which they were collected, showing the variety and complexity of the materials produced in different periods, even when used for the same function.
- 2020Publication . Ferreira, Tiago Miguel; Sequeira, Sílvia Oliveira; Claro, Ana; Miller, Ana Zélia; Figueiredo, Elin; LAQV@REQUIMTE; VICARTE - Vidro e Cerâmica para as Artes; DCR - Departamento de Conservação e Restauro; CHAM - Centro de Humanidades; CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N); DCM - Departamento de Ciência dos Materiais; Associação Profissional de Conservadores-Restauradores de Portugal (ARP)
- Transformações recentes com vista ao futuroPublication . Figueiredo, Elin; Ferreira, Tiago Miguel; Claro, Ana; Miller, Ana Zélia; Sequeira, Sílvia O.; DCM - Departamento de Ciência dos Materiais; CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N); CHAM - Centro de Humanidades; DCR - Departamento de Conservação e Restauro; VICARTE - Vidro e Cerâmica para as Artes; Associação Profissional de Conservadores-Restauradores de Portugal (ARP)
- Editorial for special issue "Advances in Experimental and Computational Rheology, Volume II"Publication . Cidade, Maria Teresa; Nóbrega, João Miguel; CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N); DCM - Departamento de Ciência dos Materiais; MDPI - Multidisciplinary Digital Publishing Institute
- Erratum: A cellulose liquid crystal motor: A steam engine of the second kind (Scientific Reports (2013) 3 (1028) DOI:10.1038/srep01028)Publication . Geng, Yong; Almeida, Pedro Lúcio; Fernandes, Susete Nogueira; Cheng, Cheng; Palffy-Muhoray, Peter; Godinho, Maria Helena; DCM - Departamento de Ciência dos Materiais; CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N); Nature Publishing Group[No abstract available]
- Editorial for special issue “Advances in experimental and Computational rheology”Publication . Cidade, Maria Teresa; Nóbrega, João Miguel; CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N); DCM - Departamento de Ciência dos Materiais; MDPI - Multidisciplinary Digital Publishing Institute
- Editorial for the special issue “characterization of nanomaterials: Selected papers from 6th dresden nanoanalysis symposium”Publication . Zschech, Ehrenfried; Sinclair, Robert; Martins, Rodrigo; Sebastiani, Marco; Sartori, Sabrina; UNINOVA-Instituto de Desenvolvimento de Novas Tecnologias; CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N); DCM - Departamento de Ciência dos Materiais; MDPI AG
- Erratum to: In Situ Phase Evolution of Ni/Ti Reactive Multilayers (J. of Materi Eng and Perform, vol 23, pg 2446, 2014)Publication . Cavaleiro, A. J.; Ramos, A. S.; Martins, R. M. S.; Baehtz, C.; Vieira, M. T.; Braz Fernandes, F. M.; DCM - Departamento de Ciência dos Materiais; CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N); ASM International | Springer