Enviaments recents

  • Phonon dispersion relation of metallic glasses 

    Crespo Artiaga, Daniel; Bruna Escuer, Pere; Vallés Sales, Araceli; Pineda Soler, Eloi (American Physical Society, 2016-10-13)
    Article
    Accés obert
    Experimental data on the phase sound speed of metallic glasses show anomalies in the terahertz range, reflecting an underlying complex behavior of their phonon dispersion spectrum not yet explained. We determine the phonon ...
  • Transition from stress-driven to thermally activated stress relaxation in metallic glasses 

    Qiao, Jichao; Wang, Yun-Jiang; Zhao, L. Z.; Dai, L. H.; Crespo Artiaga, Daniel; Pelletier, J. M.; Keer, L. M.; Yao, Y (American Physical Society, 2016-09-21)
    Article
    Accés obert
    The short-range ordered but long-range disordered structure of metallic glasses yields strong structural and dynamic heterogeneities. Stress relaxation is a technique to trace the evolution of stress in response to a fixed ...
  • The Glaze Technology of Hispano-Moresque Ceramic Tiles: A Comparison Between Portuguese and Spanish Collections 

    Coentro, S; Alves, L.C.; Relvas, C.; Ferreira, T; Mirâo, J; Molera Marimon, Judit; Pradell Cara, Trinitat; Trindade, R. A. A.; Da Silva, R.C.; Muralha, V.S.F. (2017-01-10)
    Article
    Accés restringit per política de l'editorial
    For the first time, Hispano-Moresque glazed tiles from Portuguese and Spanish collections were studied together and compared. This work is included in a wider study tackling the technology of Hispano-Moresque tile production ...
  • Specific effects of monovalent counterions on the structural and interfacial properties of dodecyl sulfate monolayers 

    Allen, Daniel T.; Saaka, Yussif; Pardo Soto, Luis Carlos; Lawrence, M. Jayne; Lorenz, Christian D. (2016-10-19)
    Article
    Accés obert
    A series of molecular dynamics simulations have been conducted in order to study the specific ion effects of Li+, Na+, Cs+ and NH4+ cations on dodecyl sulfate (DS-) monolayers. Varying the counterion had no appreciable ...
  • Orientational relaxations in solid (1,1,2,2)tetrachloroethane 

    Tripathi, Pragya; Mitsari, Efstratia; Romanini, Michela; Serra, Pablo; Tamarit Mur, José Luis; Zuriaga, Jose Mariano; Macovez, Roberto (2016)
    Article
    Accés obert
    We employ dielectricspectroscopy and molecular dynamic simulations to investigate the dipolar dynamics in the orientationally disordered solid phase of (1,1,2,2)tetrachloroethane. Three distinct orientational dynamics are ...
  • Solid state stability and solubility of triethylenetetramine dihydrochloride 

    Henriet, Theo; Gana, Inès; Ghaddar, Carine; Barrio Casado, María del; Cartigny, Yohann; Yagoubi, Najet; Do, Bernard; Tamarit Mur, José Luis; Rietveld, Ivo B. (2016-09-10)
    Article
    Accés obert
    The API triethylenetetramine dihydrochloride used as an alternative treatment of Wilson¿s disease is sensitive to water and it exhibits polymorphism. As this may become an issue for the drug formulation, the physical ...
  • Van-der-Waals based solvates of C-60 with CBr2Cl2 and CBr2(CH3)(2) 

    Ye, Jin; Barrio Casado, María del; Céolin, René; Qureshi, Navid; Rietveld, Ivo B.; Tamarit Mur, José Luis (2016-09-30)
    Article
    Accés obert
    We demonstrate that solvates of fullerene C60 form very predictable structures with finely tunable properties through the choice of the second component or solvent. Cubic co-crystals of C60·12CCl2Br2 and C60·12CBr2(CH3)2 ...
  • Solid state physicochemical properties and applications of organic and metallo-organic fullerene derivatives 

    Mitsari, Efstratia; Romanini, Michela; Manesh, Zachariah; Macovez, Roberto (2016)
    Article
    Accés obert
    We review the fundamental properties and main applications of organic derivatives and complexes of fullerenes in the solid-state form. We address in particular the structural properties, in terms of crystal structure, ...
  • Modeling of the Sub-Tg Relaxation Spectrum of Pd42.5Ni7.5Cu30P20 Metallic Glass 

    Liu, Chaoren; Pineda Soler, Eloi; Crespo Artiaga, Daniel; Qiao, Jichao (2016-03-17)
    Article
    Accés obert
    In this work we study the mechanical relaxation spectrum of Pd42.5Ni7.5Cu30P20 metallic glass. The effect of aging on the relaxation behavior is analyzed by measuring the internal friction during consecutive heating runs. ...
  • Relaxation dynamics of Fe55Cr10Mo14C15B6 metallic glass explored by mechanical spectroscopy and calorimetry measurements 

    Liu, Chaoren; Madinehei, Seyed Milad; Pineda Soler, Eloi; Crespo Artiaga, Daniel (2016-08-01)
    Article
    Accés obert
    In this work, the mechanical relaxation dynamics of Fe55Cr10Mo14C15B6 metallic glass is explored by mechanical spectroscopy. The temperature-dependent loss modulus E″(T) shows the features of β relaxation well below glass ...

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