Now showing items 334-353 of 414

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      Scission kinetic model for the prediction of polymer pyrolysis curves from chain structure  [Article]

      Pérez Maqueda, Luis Allan; Sánchez Jiménez, Pedro Enrique; Parejón Pazo, Antonio; García Garrido, Cristina; Benítez Guerrero, Mónica; Criado Luque, José Manuel (Elsevier, 2014)
      There is a significant interest in correlating polymer structure with thermal degradation behavior. Thus, polymer pyrolysis curves could be predicted from the chemical structure of the polymer. Recent proposals correlate ...
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      Segregation-induced grain boundary electrical potential in ionic oxide materials: A first principles model  [Article]

      Gómez García, Diego; Meléndez, Juan J.; González Romero, Roberto Luis; Domínguez Rodríguez, Arturo (Elsevier, 2010)
      A first principles continuum analytical model for cationic segregation to the grain boundaries in complex ceramic oxides is presented. The model permits one to determine the electric charge density and the segregation-induced ...
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      Selective UV Reflecting Mirrors Based on Nanoparticle Multilayers  [Article]

      Castro Smirnov, José Raúl; Calvo Roggiani, Mauricio; Míguez García, Hernán Ruy (Wiley-VCH, 2013)
      A new type of nanostructured selective ultraviolet (UV) reflecting mirror is presented. Periodic porous multilayers with photonic crystal properties are built by spin-coating-assisted layer-by-layer deposition of colloidal ...
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      Self-assembling of tetradecylammonium chain on swelling high charge micas (na-mica-3 and na-mica-2): Effect of alkylammonium concentration and mica layer charge  [Article]

      Pazos Zarama, Mery Carolina; Cota, Agustín; Osuna, Francisco J.; Pavón González, Esperanza; Alba, María D. (American Chemical Society, 2015)
      A family of tetradecylammonium micas is synthesized using synthetic swelling micas with high layer charge (NanSi8–nAlnMg6F4O20·XH2O, where n = 2 and 3) exchanged with tetradecylammonium cations. The molecular arrangement ...
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      Self-propagating combustion synthesis via an MSR process: An efficient and simple method to prepare (Ti, Zr, Hf)B2-Al2O3 powder nanocomposites  [Article]

      Sayagués de Vega, María Jesús; Córdoba Gallego, José Manuel; Gotor Martínez, Francisco José; Avilés Escaño, Miguel Ángel (Elsevier, 2014)
      The synthesis of (Ti1-xZrx)B2-Al2O3, (Ti1-xHfx)B2-Al2O3 and (Zr1-xHfx)B2-Al2O3 (x=0, 0.5 and 1) powder nanocomposites via a mechanochemical method using TiO2, ZrO2, HfO2, HBO2 and Al as the raw materials was investigated. ...
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      Shape-defined nanodimers by tailored heterometallic epitaxy  [Article]

      García Negrete, Carlos Andrés; Rojas Ruiz, Teresa Cristina; Knappett, Benjamin R.; Jefferson, David A.; Wheatley, Andrew E.H.; Fernández Camacho, Asunción (Royal Society of Chemistry (Great Britain), 2014)
      The systematic construction of heterogeneous nanoparticles composed of two distinct metal domains (Au and Pt) and exhibiting a broad range of morphologically defined shapes is reported. It is demonstrated that careful Au ...
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      Simultaneous quantification of light elements in thin films deposited on Si substrates using proton EBS (Elastic Backscattering Spectroscopy)  [Article]

      Ferrer Fernández, Francisco Javier; Alcaire Martín, María; Caballero Hernández, Jaime; García García, Francisco Javier; Gil Rostra, Jorge; Terriza Fernández, Antonia; Fortio Godinho, Vanda Cristina; García López, Francisco Javier; Barranco Quero, Ángel; Fernández Camacho, Asunción (Elsevier, 2014)
      Quantification of light elements content in thin films is an important and difficult issue in many technological fields such as polymeric functional thin films, organic thin film devices, biomaterials, and doped semiconducting ...
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      Single-step fabrication process of 1-D photonic crystals coupled to nanocolumnar TiO2 layers to improve DSC efficiency  [Article]

      González-García, Lola; Colodrero, Silvia; Míguez García, Hernán Ruy; Rodríguez González-Elipe, Agustín (Optical Society of America, 2015)
      The present work proposes the use of a TiO2 electrode coupled to a one-dimensional photonic crystal (1DPC), all formed by the sequential deposition of nanocolumnar thin films by physical vapor oblique angle deposition ...
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      Size and shape of supported zirconia nanoparticles determined by x-ray photoelectron spectroscopy  [Article]

      Yubero Valencia, Francisco; Mansilla Sánchez, Catalina; Ferrer Fernández, Francisco Javier; Holgado Vázquez, Juan Pedro; Rodríguez González-Elipe, Agustín (American Institute of Physics, 2007)
      The initial stages of growth of zirconia nanoparticles deposited on SiO2, Y2O3, and CeO2 substrates have been studied by the x-ray photoelectron spectroscopy peak shape analysis. ZrO2 was deposited by plasma decomposition ...
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      Sliding wear resistance of biomorphic SiC ceramics  [Article]

      Vera García, María del Carmen; Ramírez Rico, Joaquín; Martínez Fernández, Julián; Mritjunjay, Singh (Elsevier, 2015)
      Biomorphic SiC ceramics were fabricated from four different wood precursors and their Knoop hardness and sliding wear resistance when sliding against a Si3N4 ball in air were studied. Tribological experiments were performed ...
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      Sliding wear resistance of sintered SiC-fiber bonded ceramics  [Article]

      Vera García, María del Carmen; Ramírez Rico, Joaquín; Martínez Fernández, Julián; Mritjunjay, Singh (Elsevier, 2015)
      Advanced SiC-based ceramics and fiber reinforced composites are interesting materials for a wide variety of applications involving sliding wear conditions because of their excellent thermomechanical properties. The ...
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      Small particle-size talc is associated with poor outcome and increased inflammation in thoracoscopic pleurodesis  [Article]

      Arellano Orden, Elena; Romero Falcon, Auxiliadora; Ocaña Jurado, Manuel; Rodríguez Panadero, Francisco; Martín Juan, José; Montes Worboys, Ana (S. Karger AG, 2012)
      Rationale: Talc is very effective for pleurodesis, but there is concern about complications, especially acute respiratory distress syndrome. Objectives: It was the aim of this study to investigate if talc with a high ...
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      Solid lubricant behavior of MoS2 and WSe2-based nanocomposite coatings  [Article]

      Domínguez Meister, Santiago; Rojas Ruiz, Teresa Cristina; Brizuela, Marta; Sánchez López, Juan Carlos (National Institute for Materials Science, 2017)
      Tribological coatings made of MoS2 and WSe2 phases and their corresponding combinations with tungsten carbide (WC) were prepared by non-reactive magnetron sputtering of individual targets of similar composition. A comparative ...
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      Solution processed high refractive index contrast distributed Bragg reflectors  [Article]

      Anaya Martín, Miguel; Rubino, Andrea; Calvo Roggiani, Mauricio; Míguez García, Hernán Ruy (Royal Society of Chemistry, 2016)
      We have developed a method to alternate porous and dense dielectric films in order to build high refractive index contrast distributed Bragg reflectors (DBRs) capable of reflecting very efficiently in a targeted spectral ...
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      Solvent-assisted in situ synthesis of cysteamine-capped silver nanoparticles  [Article]

      Sayagués de Vega, María Jesús; Ríos de la Rosa, Julio; Oliva, José María; Sánchez Alcázar, José Antonio; Merkling, Patrick J. (IOP Publishing, 2018)
      Silver nanoparticles offer a huge potential for biomedical applications owing to their exceptional properties and small size. Specifically, cysteamine-capped silver nanoparticles could form the basis for new anticancer ...
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      Spark Plasma Sintered Zirconia Ceramic Composites with Graphene-Based Nanostructures  [Article]

      Gallardo López, Angela María; López Pernía, Cristina; Muñoz Ferreiro, Carmen; González Orellana, Carmen; Morales Rodríguez, Ana; Poyato Galán, Rosalía (MDPI, 2018)
      The addition of graphene-based nanostructures (GBNs) can improve the inherent fragility of ceramics and provide them with improved electrical and thermal conductivities. However, both the starting material (ceramic matrix ...
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      Spark plasma sintering of TixTa1-xC0.5N0.5-based cermets: Effects of processing conditions on chemistry, microstructure and mechanical properties  [Article]

      Córdoba Gallego, José Manuel; Chicardi Augusto, Ernesto; Poyato Galán, Rosalía; Gotor Martínez, Francisco José; Medri, Valentina; Guicciardi, Stefano; Melandri, Cesare (Elsevier, 2013)
      Nanometric powdered TixTa1-xC0.5N0.5-based cermets were fabricated using a mechanically induced self-sustaining reaction and consolidated by spark plasma sintering. Highly dense cermets were obtained, and their chemistry, ...
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      STEM-in-SEM high resolution imaging of gold nanoparticles and bivalve tissues in bioaccumulation experiments  [Article]

      García Negrete, Carlos Andrés; Jiménez de Haro, María del Carmen; Blasco, Javier; Soto, M.; Fernández Camacho, María Asunción (Royal Society of Chemistry (Great Britain), 2015)
      The methodology termed scanning transmission electron microscopy in scanning electron microscopy (STEM-in-SEM) has been used in this work to study the uptake of citrate stabilized gold nanoparticles (AuNPs) (average particle ...
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      STEM‐EELS analysis reveals stable high‐density He in nanopores of amorphous silicon coatings deposited by magnetron sputtering  [Article]

      Schierholz, Roland; Lacroix, Bertrand; Fortio Godinho, Vanda Cristina; Caballero Hernández, Jaime; Duchamp, Martial; Fernández Camacho, Asunción (IOP Publishing, 2015)
      A broad interest has been showed recently on the study of nanostructuring of thin films and surfaces obtained by low‐energy He plasma treatments and He incorporation via magnetron sputtering. In this paper spatially resolved ...
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      STEM–EELS analysis reveals stable high-density He in nanopores of amorphous silicon coatings deposited by magnetron sputtering  [Article]

      Schierholz, Roland; Lacroix, Bertrand; Fortio Godinho, Vanda Cristina; Caballero Hernández, Jaime; Duchamp, Martial; Fernández Camacho, Asunción (Institute of Physics Publishing, 2015)
      A broad interest has been showed recently on the study of nanostructuring of thin films and surfaces obtained by low‐energy He plasma treatments and He incorporation via magnetron sputtering. In this paper spatially resolved ...