Kyle A Ritter and Joseph W Lyding 2008 Nanotechnology 19 015704 doi:10.1088/0957-4484/19/01/015704
Kyle A Ritter1,2 and Joseph W Lyding1,3
Show affiliationsWe have developed a method for depositing graphene monolayers and bilayers with minimum lateral dimensions of 2–10 nm by the mechanical exfoliation of graphite onto the Si(100)-2 × 1:H surface. Room temperature, ultrahigh vacuum tunneling spectroscopy measurements of nanometer-sized single layer graphene reveal a size-dependent energy gap ranging from 0.1 to 1 eV. Furthermore, the number of graphene layers can be directly determined from scanning tunneling microscopy topographic contours. This atomistic study provides an experimental basis for probing the electronic structure of nanometer-sized graphene which can assist the development of graphene-based nanoelectronics.
81.07.-b Nanoscale materials and structures: fabrication and characterization
68.37.Ef Scanning tunneling microscopy (including chemistry induced with STM)
Issue 1 (9 January 2008)
Received 24 September 2007, in final form 31 October 2007
Published 29 November 2007
Kyle A Ritter and Joseph W Lyding 2008 Nanotechnology 19 015704
A Bauer et al 2008 Nanotechnology 19 015203
S Clemens et al 2009 Nanotechnology 20 075305
Sebastian Bernhardsson et al 2009 New J. Phys. 11 123015
K A Slinker et al 2005 New J. Phys. 7 246
S Sh Ameev and V L Shmonin 1984 J. Phys. G: Nucl. Phys. 10 1311
F Verhaegen et al 2000 Phys. Med. Biol. 45 3159
T Saito et al 1981 J. Opt. 12 49
Alexander W. Blocker et al. 2009 ApJ 701 1742
Che-Cheng Chang et al 2009 Nanotechnology 20 115401