Now showing items 1-20 of 22

    • Concurrent segregation and erosion effects in medium-energy iron beam patterning of silicon surfaces 

      Redondo Cubero, Andrés; Lorenz, Katharina; Palomares Simón, Francisco Javier; Muñoz Castellanos, Ángel; Castro Ponce, Mario; Muñoz García, J.; Cuerno Rejado, Rodolfo; Vázquez Burgos, Luís Fernando (11/07/2018)
      We have bombarded crystalline silicon targets with a 40 keV Fe+ ion beam at different incidence angles. The resulting surfaces have been characterized by Atomic Force, Current-sensing and Magnetic Force Microscopies, ...
    • Elastic properties of natural single nanofibres 

      Fernandes, Francisco M.; Vázquez Burgos, Luís; Ruiz-Hitzky, Eduardo; Carnicero López, Alberto; Castro Ponce, Mario (10/02/2014)
      Natural nanomaterials are becoming increasingly relevant in the context of mechanical reinforcement of a multiplicity of matrices. The elastic properties of single nanomaterials are, however, mostly unknown. By combining ...
    • Energy dependence of the ripple wavelength for ion-beam sputtering of silicon: experiments and theory 

      Castro Ponce, Mario; Gago Fernández, Raúl; Vázquez Burgos, Luís; Muñoz García, J.; Cuerno Rejado, Rodolfo (19/04/2013)
      In spite of the efforts devoted for the last 20 years to elucidating ion-beam sputtering (IBS) as an instance of surface self-organization, the classic view on the main mechanism inducing the morphological instability has ...
    • Fabrication of HfO2 patterns by laser interference nanolithography and selective dry etching for III-V CMOS application 

      Benedicto Córdoba, Marcos; Galiana Blanco, Beatriz; Molina Aldereguia, Jon; Monaghan, S.; Hurley, P.K.; Cherkaoui, K.; Vázquez Burgos, Luís; Tejedor Jorge, Paloma (31/05/2011)
      Se describe la nanoestructuración de películas ultrafinas de HfO2 depositadas sobre sustratos de GaAs (001) por nanolitografía por interferencia láser de alta resolución de Lloyd. La transferencia del patrón a la película ...
    • Generic equations for pattern formation in evolving interfaces 

      Castro Ponce, Mario; Muñoz García, J.; Cuerno Rejado, Rodolfo; Hernández, M.D.G.; Vázquez Burgos, Luís (01/04/2007)
      We present a general formalism which allows us to derive the evolution equations describing one-dimensional (1D) and isotropic 2D interface-like systems, that is based on symmetries, conservation laws, multiple scale ...
    • Growth dynamics of reactive-sputtering-deposited AlN films 

      Auger, M.A.; Vázquez Burgos, Luís; Sánchez, O.; Jergel, M.; Cuerno Rejado, Rodolfo; Castro Ponce, Mario (01/06/2005)
      We have studied the surface kinetic roughening of AlN films grown on Si(100) substrates by dc reactive sputtering within the framework of the dynamic scaling theory. Films deposited under the same experimental conditions ...
    • Independence of interrupted coarsening on initial system order: ion-beam nanopatterning of amorphous versus crystalline silicon targets 

      Muñoz García, J.; Gago Fernández, Raúl; Cuerno Rejado, Rodolfo; Sánchez García, José Ángel; Redondo Cubero, Andrés; Castro Ponce, Mario; Vázquez Burgos, Luís (23/08/2012)
      Interrupted coarsening (IC) has recently been identified as an important feature for the dynamics of the typical length-scale in pattern-forming systems on surfaces. In practice, it can be beneficial to improve pattern ...
    • Interplay between morphology and surface transport in nanopatterns produced by ion-beam sputtering 

      Cuerno Rejado, Rodolfo; Muñoz García, J.; Castro Ponce, Mario; Gago Fernández, Raúl; Vázquez Burgos, Luís (01/01/2008)
      A "hydrodynamic" model has been proposed to describe nanopattern formation and dynamics on amorphous surfaces eroded by ion-beam sputtering (IBS), that relates to descriptions of pattern formation in macroscopic systems ...
    • Intrinsic anomalous surface roughening of TiN films deposited by reactive sputtering 

      Auger, M.A.; Vázquez Burgos, Luís; Cuerno Rejado, Rodolfo; Castro Ponce, Mario; Jergel, M.; Sánchez, O. (01/01/2006)
      We study surface kinetic roughening of TiN films grown on Si(100) substrates by dc reactive sputtering. The surface morphology of films deposited for different growth times under the same experimental conditions were ...
    • Nanoscale pattern formation at surfaces under ion-beam sputtering: a perspective from continuum models 

      Cuerno Rejado, Rodolfo; Castro Ponce, Mario; Muñoz García, J.; Gago Fernández, Raúl; Vázquez Burgos, Luís (01/05/2011)
      Although reports on surface nanostructuring of solid targets by low to medium energy ion irradiation date back to the 1960s, only with the advent of high resolution tools for surface/interface characterization has the high ...
    • Nucleation of SrTiO3 3D islands and nanorings on Si substrates 

      Tejedor Jorge, Paloma; Benedicto Córdoba, Marcos; Vázquez Burgos, Luís; Galiana Blanco, Beatriz (28/08/2014)
      La nucleación de SrTiO3 en islas y nanoanillos tridimensionales (3D) sobre sustratos de Si a través de un nuevo procedimiento de descomposición organometálico (MOD) se ha investigado en función de la temperatura y concentración ...
    • Order enhancement and coarsening of self-organized silicon nanodot patterns induced by ion-beam sputtering 

      Gago Fernández, Raúl; Vázquez Burgos, Luís; Plantevin, O.; Metzger, T.H.; Muñoz García, J.; Cuerno Rejado, Rodolfo; Castro Ponce, Mario (01/12/2006)
      The temporal evolution of the characteristic wavelength (lambda) and ordering range (xi) of self-organized nanodot patterns induced during Ar+ ion beam sputtering on Si(001) and Si(111) surfaces is studied by atomic force ...
    • Pattern-wavelength coarsening from topological dynamics in silicon nanofoams 

      Castro Ponce, Mario; Cuerno Rejado, Rodolfo; García-Hernández, Maria del Mar; Vázquez Burgos, Luís (07/03/2014)
      We report the experimental observation of a submicron cellular structure on the surface of silicon targets eroded by an ion plasma. Analysis by atomic force microscopy allows us to assess the time evolution and show that ...
    • Self-organized nanopatterning of silicon surfaces by ion beam sputtering 

      Muñoz García, J.; Vázquez Burgos, Luís; Castro Ponce, Mario; Gago Fernández, Raúl; Redondo Cubero, Andrés; Moreno Barrado, Ana; Cuerno Rejado, Rodolfo (01/12/2014)
      In recent years Ion Beam Sputtering (IBS) has revealed itself as a powerful technique to induce surface nanopatterns with a large number of potential applications. These structures are produced in rather short processing ...
    • Self-organized ordering of nanostructures produced by ion-beam sputtering 

      Castro Ponce, Mario; Cuerno Rejado, Rodolfo; Vázquez Burgos, Luís; Gago Fernández, Raúl (01/01/2005)
      We study the self-organized ordering of nanostructures produced by ion-beam sputtering of targets amorphizing under irradiation. By introducing a model akin to models of pattern formation in aeolian sand dunes, we extend ...
    • Self-organized surface nanopatterning by ion beam sputtering 

      Muñoz García, J.; Vázquez Burgos, Luís; Cuerno Rejado, Rodolfo; Sánchez García, José Ángel; Castro Ponce, Mario; Gago Fernández, Raúl (Springer (Berlín, Alemania), 29/06/2009)
    • Special issue on surfaces patterned by ion sputtering 

      Muñoz García, J.; Cuerno Rejado, Rodolfo; Castro Ponce, Mario; Vázquez Burgos, Luís Fernando; Gago Fernández, Raúl; Redondo Cubero, Andrés (22/10/2018)
      Scalable nanostructuring of surfaces using ion beam sputtering (IBS) is a versatile alternative to traditional lithography. Semiconductors, metals or compounds are amenable for IBS where different patterns can be obtained ...
    • Stress-induced solid flow drives surface nanopatterning of silicon by ion-beam irradiation 

      Castro Ponce, Mario; Gago Fernández, Raúl; Vázquez Burgos, Luís; Muñoz García, J.; Cuerno Rejado, Rodolfo (19/12/2012)
      Ion-beam sputtering (IBS) is known to produce surface nanopatterns over macroscopic areas on a wide range of materials. However, in spite of the technological potential of this route to nanostructuring, the physical process ...
    • Surface nanopatterns induced by ion-beam sputtering 

      Cuerno Rejado, Rodolfo; Vázquez Burgos, Luís; Gago Fernández, Raúl; Castro Ponce, Mario (03/06/2009)
    • Thermal stability of HfO2-on-GaAs nanopatterns 

      Galiana Blanco, Beatriz; Benedicto Córdoba, Marcos; Vázquez Burgos, Luís; Molina Aldereguia, Jon; Tejedor Jorge, Paloma (26/04/2012)
      Hemos evaluado el efecto de recocido térmico en la morfología, la fase cristalina y la composición elemental de nanopatrones de dieléctricos de alta K HfO2-on-GaAs a 500-620C mediante el uso de microscopía de fuerza atómica ...