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SUMMARY:Graphene: one\, no one and one hundred thousand - Saverio Russo (U
 niversity of Exeter)
DTSTART:20130218T153000Z
DTEND:20130218T170000Z
UID:TALK42858@talks.cam.ac.uk
CONTACT:6270
DESCRIPTION:Graphene –a single layer of carbon atoms with honeycomb stru
 cture- has emerged as a new paradigm in condensed matter physics due to th
 e gamut of unique physical properties which also make it the ideal platfor
 m for novel transparent and flexible opto-electronic devices. These unique
  properties can be further tailored to fit specific device functionalities
  by means of a perpendicular electric field applied onto few-layer graphen
 e [1] or by chemical bonding of a molecule or a chemical element to the pr
 istine graphene [2\, 3]. For example a perpendicular electric field applie
 d onto some of the few-layer graphene systems can result in the opening of
  a gate tuneable energy gap [1] which has only been directly measured in o
 ptical spectroscopy experiments. At the same time\, the functionalization 
 with FeCl3 of few-layer graphene results in a new system which is the best
  known transparent material able to conduct electricity –i.e. GraphExete
 r [2]. Furthermore\, the functionalization with fluorine makes graphene a 
 wide gap semiconductors [3]. In this talk I will review our most recent co
 ntributions to engineer the electrical and optical properties of graphene 
 materials via a perpendicular electric field and chemical functionalizatio
 n to develop whole-graphene flexible and transparent electronics.\n[1] App
 l. Phys. Lett. 100\, 013114 (2012)\n[2] Advanced Materials 24\, 2844 (2012
 )\n[3] Nano Lett. 11\, 3912 (2011)
LOCATION:Rutherford building\, Seminar Room B
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