Nanoarquitecturas de grafeno con precisión atómica

Nanoarquitecturas de grafeno con precisión atómica

Author: Cesar Moreno Sierra, Ara García-Lekue, Aitor Mugarza
Revista Española de Física. Vol 33, No 4 (2019)

Abstract:
La síntesis de arquitecturas covalentes en superficie y con precisión atómica se ha erigido como uno de los métodos más prometedores para dotar de nuevas funcionalidades al grafeno, un material ya de por si superlativo en múltiples aspectos….

Band Depopulation of Graphene Nanoribbons Induced by Chemical Gating with Amino Groups

Band Depopulation of Graphene Nanoribbons Induced by Chemical Gating with Amino Groups

Author: Jingcheng Li, Pedro Brandimarte, Manuel Vilas-Varela, Nestor Merino-Díez, Cesar Moreno, Aitor Mugarza, Jaime Sáez Mollejo, Daniel Sánchez-Portal, Dimas Garcia de Oteyza, Martina Corso, Aran Garcia-Lekue, Diego Peña, Jose Ignacio Pascual.
ACS Nano 2020, 14, 2, 1895-1901.

Abstract:
The electronic properties of graphene nanoribbons (GNRs) can be precisely tuned by chemical doping. Here we demonstrate that amino (NH2) functional groups attached at the edges of chiral GNRs (chGNRs) can efficiently gate the chGNRs…

Engineering nanostructured cell micropatterns on Ti6Al4V by selective ion-beam inhibition of pitting

Engineering nanostructured cell micropatterns on Ti6Al4V by selective ion-beam inhibition of pitting

Author: R.López, M.D.Ynsa, P.J.de Pablo, F.Lim, M.Manso Silván
Corrosion Science. 9 February 2020, 108528

Abstract:
We have modified Ti6Al4V at the micro and nanoscale by using ion beam irradiation with 5 MeV Si+ ions through 1D micromasks. The passivation layer on irradiated areas inhibits hydrofluoric acid induced etching, leading to pitting contrasts…

A real-time XAS PEEM study of the growth of cobalt iron oxide on Ru(0001)

A real-time XAS PEEM study of the growth of cobalt iron oxide on Ru(0001)

Author: S. Ruiz-Gómez, A. Mandziak, J. E. Prieto, M. AristuE. M. TraperoG. D. SoriaA. Quesada, M. Foerster, L. Aballe, and  J. de la Figuera
J. Chem. Phys. 152, 074704 (2020)

Abstract:
The growth of mixed cobalt-iron oxides on Ru(0001) by high-temperature oxygen-assisted molecular beam epitaxy has been monitored in real time and real space by x-ray absorption photoemission microscopy. The initial composition is a mixed….

Face dependent footprints of carpet-like graphene films grown on polycrystalline silicon carbide

Face dependent footprints of carpet-like graphene films grown on polycrystalline silicon carbide

Author: C. Ramírez, E. García, E. Barrena, A. De Pablos, M. Belmonte, M. I. Osendi, P. Miranzo, C. Ocal
Carbon. 2019

Abstract:
Continuous epitaxial graphene (EG) films have been grown on polished surfaces of dense polycrystalline SiC ceramics by heating in a Spark Plasma Sintering furnace (SPS). The confining of the sample into a graphite die and the use of a high…

Low gas consumption fabrication of 3He solid targets for nuclear reactions

Low gas consumption fabrication of 3He solid targets for nuclear reactions

Author: Asunción Fernández, Dirk Hufschmidt, Julien L.Colaux, Jose Javier Valiente-Dobón, Vanda Godinho, Maria C.Jiménez de Haro, David Feria, Andrés Gadea, Stéphane Lucas
Materials & Design 2020

Abstract:
Nanoporous solids that stabilize trapped gas nanobubbles open new possibilities to fabricate solid targets for nuclear reactions. A methodology is described based on the magnetron sputtering (MS) technique operated under quasistatic flux…