THE LATEST NEWS ABOUT US, GENERAL AND SPECIFIC OF EACH GROUP
- Nov 28, 2009 Oral on the Workshop on Nanomaterials for Energy and Biotechnology
- Nov 21, 2009 Instability of Cationic Gold Nanoparticle Bioconjugates: The Role of Citrate Ions
- Nov 21, 2009 Oral and Poster on the Workshop on Solid Oxide Fuel Cells: Materials and Technology
- Nov 17, 2009 Amphiphillic Organic Crystals
- Nov 17, 2009 Iodine/Iodide-Free Dye-Sensitized Solar Cells
- Nov 15, 2009 International Advisory Committee at Nanoagri 2010
- Nov 11, 2009 Plenary Speaker at Biosensors 2010
- Nov 10, 2009 Conference: 'La Ciencia inesperada. Historia de los descubrimientos que nadie buscó'
- Nov 07, 2009 Conference: 'Viaje a Nanolandia'
- Nov 04, 2009 Fabrication of large addition energy quantum dots in graphene
- Nov 02, 2009 Conference on NordsForsk spintronics workshop
- Nov 01, 2009 Invited Lecture at CNIC
Nov 04, 2009
Fabrication of large addition energy quantum dots in graphene
Joel Moser and Adrian Bachtold, member and leader of the Quantum Nanoelectronics group at CIN2 (CSIC-ICN) published 'Fabrication of large addition energy quantum dots in graphene' on Applied Physics Letters.
The work presents a simple technique to fabricate graphene quantum dots in a cryostat. It relies upon the controlled rupture of a suspended graphene sheet subjected to the application of a large electron current. This results in the in situ formation of a clean and ultranarrow constriction, which hosts one quantum dot and occasionally a few quantum dots in series. Conductance spectroscopy indicates that individual quantum dots can possess an addition energy as large as 180 meV. Our technique has several assets: (i) the dot is suspended, thus the electrostatic influence of the substrate is reduced, and (ii) contamination is minimized, since the edges of the dot have only been exposed to the vacuum in the cryostat.