Now showing items 1-12 of 231

  • Technological implications of neo-formed hematite crystals in ceramic lead glazes 

    Di Febo, Roberta; Molera Marimon, Judit; Pradell Cara, Trinitat; Vallcorba, Oriol; Capelli, Claudio (2017-12-15)
    Article
    Open Access
    Hexagonal neo-formed crystallites have been observed in thin section of different medieval and post-medieval lead-glazed ceramics. Although they are clearly visible in thin section using plane polarized light, their plate ...
  • Fe in P-doped basaltic melts: a Mössbauer spectroscopy study 

    Tarragó Aymerich, Mariona; García-Vallès, Maite; Méndez Martínez, Salvador; Pradell Cara, Trinitat; Bruna Escuer, Pere (2018-10-01)
    Article
    Restricted access - publisher's policy
    The addition of P to a basalt causes a change in the environment of Fe. At low P contents iron is located in the glass structure and the Fe3+/Fe2+ ratio is about 80/20. Further addition of P causes a collapse of the glass ...
  • Jun ware glazes: Chemistry, nanostructure and optical properties 

    Jiayu, Hou; Pradell Cara, Trinitat; Yuan, Li; Jianmin, Miao (Elsevier, 2018-09-13)
    Article
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    A set of the Classic and official Jun ware shards found at various kilns at Yuzhou (Henan) are analyzed. The blue color and milky appearance of the glazes subject of intense debate as being due to either the glaze nanostructure ...
  • Technology of production of Syrian lustre (11th to 13th century) 

    Pradell Cara, Trinitat; Fernandes, Alexandra R.; Molina, Gloria; Smith, Andy D.; Molera Marimon, Judit; Climent Font, Aurelio; Tite, Michael S. (Elsevier, 2018-07-01)
    Article
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    Lustre is a decoration consisting of a surface layer of silver and copper metal nanoparticles, a few hundreds of nanometres thick and incorporated into the glaze. It shows a colourful metallic and iridescent appearance ...
  • Multisite exchange-enhanced barocaloric response in Mn3NiN 

    Boldrin, David; Mendive-Tapia, Eduardo; Zemen, Jan; B. Staunton, Julie; Hansen, Thomas C.; Aznar Luque, Araceli; Tamarit Mur, José Luis; Barrio Casado, María del; Lloveras Muntané, Pol Marcel; Kim, Jiyeob; Moya, Xavier; Cohen, Leslie (2018-11-28)
    Article
    Open Access
  • Enhancement of the physical and chemical stability of amorphous drug-polymer mixtures via cryogenic comilling 

    Romanini, Michela; Lorente, Marta; Schammé, Benjamin; Delbreilh, Laurent; Dupray, Valérie; Coquerel, Gerard; Tamarit Mur, José Luis; Macovez, Roberto (American Chemical Society (ACS), 2018-11-27)
    Article
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    Amorphous dispersions of the Biclotymol antiseptic are obtained in polyvinylpyrrolidone (PVP), for different drug loadings, by comilling at temperatures below the glass transition of both components. Characterization of ...
  • Emergence of glassy features in halomethane crystals 

    Moratalla Martín, Manuel Eduardo; Gebbia, Jonathan Fernando; Ramos Ruiz, Miguel Angel; Pardo Soto, Luis Carlos; Tamarit Mur, José Luis (American Physical Society (APS), 2019-01-02)
    Article
    Open Access
    Both structural glasses and disordered crystals are known to exhibit anomalous thermal, vibrational, and acoustic properties at low temperatures or low energies, what is still a matter of lively debate. To shed light on ...
  • Dealloying of Cu-Mg-Ca alloys 

    Mbarek Wael, Ben; Pineda Soler, Eloi; Escoda, Lluïsa; Suñol Martinez, Juan Jose; Khitouni, Mohamed (Multidisciplinary Digital Publishing Institute (MDPI), 2018-11-08)
    Article
    Open Access
    The chemical dealloying of Cu-Mg-Ca alloys in free corrosion conditions was investigated for different alloy compositions and different leaching solutions. For some of the precursor alloys, a continuous, pure fcc copper ...
  • Microscopic evidence of the connection between liquid-liquid transition and dynamical crossover in an ultraviscous metallic glass former 

    Hechler, Simon; Ruta, Beatrice; Stolpe, Moritz; Pineda Soler, Eloi; Evenson, Zach; Gross, Oliver; Bernasconi, Andrea; Busch, Ralf; Gallino, Isabella (American Physical Society (APS), 2018-08-23)
    Article
    Open Access
    Liquid-liquid transitions are interesting to many researchers since they occur in systems as diverse as monoatomic liquids, multicomponent oxides, and metallic glass formers. In some cases, the crossover is accompanied by ...
  • Segmental relaxation and partial crystallization of chain-extended Poly(l-lactic acid) reinforced with carboxylated carbon nanotube 

    Yousefzade, Omid; Valenti, Sofia; Puiggalí Bellalta, Jordi; Garmabi, Hamid; Macovez, Roberto (2019-02-15)
    Article
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    Temperature-modulated differential scanning calorimetry (TMDSC) and broadband dielectric spectroscopy (BDS) were employed to study the glass transition, size of the cooperative rearranging regions (CRRs), crystallization ...
  • Tuning the Kinetic Stability of the Amorphous Phase of the Chloramphenicol Antibiotic 

    Valenti, Sofia; Romanini, Michela; Franco García, María Lourdes; Puiggalí Bellalta, Jordi; Tamarit Mur, José Luis; Macovez, Roberto (2018-10-23)
    Article
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    We employ broadband dielectric spectroscopy to study the relaxation dynamics and crystallization kinetics of a broad-spectrum antibiotic, chloramphenicol, in its supercooled liquid form. Two dynamic processes are observed: ...
  • New approaches for the fabrication of photonic structures of nonlinear optical materials 

    Carvajal, J J; Peña, A; Kumar, R.; Pujol, M. C.; Mateos, X.; Aguiló Díaz, Magdalena; Díaz, F; Vázquez De Aldana, J. R.; Méndez, Carlos Alberto; Moreno, P; Roso, L; Todorov Trifonov, Trifon; Rodríguez Martínez, Ángel; Alcubilla González, Ramón; Král, Z; Ferré Borrull, J.; Pallarès Marzal, Josep; Marsal, L F; Finizio, Sergio Di; Martorell Pena, Jordi; Macovez, Roberto (2009-12)
    Article
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    We revisited two different strategies to fabricate 1D photonic crystals of nonlinear optical dielectric materials based on ultrafast laser ablation of the surface of an RbTiOPO4 crystal, and selective etching of ferroelectric ...