Recursos de colección

Digital.CSIC (162.855 recursos)

Repositorio institucional del Consejo Superior de Investigaciones Científicas. Digital.CSIC es un depósito de documentos digitales, cuyo objetivo es organizar, archivar, preservar y difundir en modo de acceso abierto la producción intelectual resultante de la actividad investigadora del CSIC.

(CAB) Artículos post-print

Mostrando recursos 1 - 7 de 7

  1. The influence of subaquatic springs in lacustrine sedimentation: Origin and paleoenvironmental significance of homogenites in karstic Lake Banyoles (NE Spain)

    Morellón, Mario; Anselmetti, Flavio; Valero-Garcés, Blas L.; Giralt, Santiago; Ariztegui, Daniel; Sáez, Alberto; Mata, M. Pilar; Barreiro-Lostres, Fernando; Rico, María Teresa; Moreno Caballud, Ana
    Banyoles (42°08'N, 2°45'E) is the largest and deepest lake of karstic-tectonic origin in the Iberian Peninsula. The lake comprises two basins and six sub-circularly shaped sub-basins fed by subaquatic springs. Periods of intense groundwater inflow in the deepest sub-basins lead to the fluidization and re-suspension of previously deposited sediments and subsequent settling forming homogenite deposits on the southern basin intermediate platforms. The multiproxy analysis of sediment cores combined with high resolution seismic stratigraphy (3.5kHz pinger and multi-frequency Chirp surveys) allows a precise reconstruction of depositional environments and related hydrological variability and groundwater inflow during the last ca. 7.6cal kyr BP....

  2. Sublattice localized electronic states in atomically resolved graphene-Pt (111) edge-boundaries

    Merino-Mateo, Pablo; Pinardi, Anna Lisa; Méndez, Javier; López, María Francisca; Pérez, Rubén; Martín-Gago, José A.
    Understanding the connection of graphene with metal surfaces is a necessary step for developing atomically precise graphene-based technology. Combining high-resolution STM experiments and DFT calculations, we have unambiguously unveiled the atomic structure of the boundary between a graphene zigzag edge and a Pt(111) step. The graphene edges minimize their strain by inducing a 3-fold edge-reconstruction on the metal side. We show the existence of an unoccupied electronic state that is mostly localized on the C-edge atoms of one particular graphene sublattice, which could have implications in the design of graphene based devices. © 2014 American Chemical Society.

  3. Sequential formation of N-doped nanohelicenes, nanographenes and nanodomes by surface-assisted chemical (cyclo)dehydrogenation of heteroaromatics

    Pinardi, Anna Lisa; Martínez, José I.; López, María Francisca; Méndez, Javier; Martín-Gago, José A.
    We report on the stepwise formation of N-doped nanohelicenes, nanographenes, nanodomes and graphenes from the same heteroaromatic precursor through subsequent dehydrogenations on Pt(111) upon thermal annealing. The combined experimental (UHV-STM) and computational (DFT) studies provide a full atomistic description of the intermediate reaction stages. This journal is © The Royal Society of Chemistry.

  4. Chemistry and temperature-assisted dehydrogenation of C60H30 molecules on TiO2(110) surfaces

    Sánchez-Sánchez, Carlos; Martínez, José I.; Lanzilotto, Valeria; Biddau, Giulio; Gómez-Lor, Berta; Pérez, Rubén; Floreano, Luca; López, María Francisca; Martín-Gago, José A.
    The thermal induced on-surface chemistry of large polycyclic aromatic hydrocarbons (PAHs) deposited on dielectric substrates is very rich and complex. We evidence temperature-assisted (cyclo)dehydrogenation reactions for C 60H30 molecules and the subsequent bottom-up formation of assembled nanostructures, such as nanodomes, on the TiO2(110) surface. To this aim we have deposited, under ultra-high vacuum, a submonolayer coverage of C60H30 and studied, by a combination of experimental techniques (STM, XPS and NEXAFS) and theoretical methods, the different chemical on-surface interaction stages induced by the increasing temperature. We show that room temperature adsorbed molecules exhibit a weak interaction and freely diffuse on the...

  5. Tailored formation of N-doped nanoarchitectures by difussion-controlled on-surface (cyclo)-dehydrogenation of heteroaromatics

    Pinardi, Anna Lisa; Otero, Gonzalo; Palacio, Irene; Martínez, José I.; Sánchez-Sánchez, Carlos; Tello Ruiz, Marta; Rogero, Celia; Gómez-Lor, Berta; López, María Francisca; Méndez, Javier; Martín-Gago, José A.
    et al.

  6. Fullerenes from aromatic precursors by surface-catalysed cyclodehydrogenation

    Otero, Gonzalo; Biddau, Giulio; Sánchez-Sánchez, Carlos; Caillard, Renaud; López, María Francisca; Rogero, Celia; Palomares, F. Javier; Cabello, Noemí; Basanta, Miguel A.; Ortega, José; Méndez, Javier; Echavarren, Antonio M.; Pérez, Rubén; Gómez-Lor, Berta; Martín-Gago, José A.
    4 pages.-- Final full-text version of the paper available at: http://dx.doi.org/10.1038/nature07193.

  7. LEED-IV study of the rutile TiO2(110)-1x2 surface with a Ti-interstitial added-row reconstruction

    Blanco-Rey, María; Abad, José; Rogero, Celia; Méndez, Javier; López, María Francisca; Román García, Elisa Leonor; Martín-Gago, José A.; Andrés, Pedro L. de
    4 pages, 2 figures, 1 table.-- PACS nrs.: 61.14.Hg; 68.35.Bs; 68.47.Gh.

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.