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Graphene: enter to the 2D world

                Made by %username%
⫸What is «graphene»?
• Graphene is a single layer of graphite
  (structure like honeycomb).




                                           2
⫸Properties of graphene
• Thinnest imaginable material (and first truly 2D
  material ever made)
• Strongest material ever measured (theoretical
  limit)
• Stiffest known material (stiffer than diamond)
• Most stretchable crystal (up to 20% elastically)
• Record thermal conductivity (outperforming
  diamond)
• Highest current density at room temperature
  (million times of those in Cu)
                                                     3
•   Conducts electricity in the limit of no electrons
  •   Zero rest mass of charge carriers (not electrons!)
  •   Largest surface area (~3,000 m^2 per gram)
  •   Allows to observe quantum phenomena at room T




The electronic structure of graphene
         (sp2 hybridisation)
                                                           4
⫸Biography of Prof. Andre K. Geim:
from Ignoble to Nobel Prize
In every pencil
line we can observe
graphene scales.

Andre Geim & his
team done more
than just observe.


                                     5
First slide from Geim’s Nobel lecture.
                                         6
1982 MIPT(«FizTeh»)
  graduation.
   A. Geim: «The pressure
  to work and to study
  was so intense that it
  was not a rare thing for
  people to break and
  leave, and some of
  them ended up with
  everything from
  schizophrenia to
  depression to suicide.»
                         7
1987 PhD at the
  Institute of Solid
  State Physics,
  Chernogolovka,
  Russia
A.Geim: «Message I
  took away: NEVER
  TORTURE
  STUDENTS WITH
  BORING/DEAD
  PROJECTS !»


                       8
• 1987-1990 Research Scientist at the Institute for
  Microelectronics Technology, Chernogolovka
• 1990-1994 Postdoctoral Fellow at the Universities of
  Nottingham, Bath and Copenhagen
• 1994 -2000 Associate Professor (UHD), University of
  Nijmegen, Netherlands
• 2001 -2007 Professor of Physics, University of
  Manchester, UK
• 2007 -2010 EPSRC Senior Research Fellow
• since 2002 Director, Centre for Mesoscience &
  Nanotechnology, University of Manchester
• since 2007 Langworthy Professor of Physics, University of
  Manchester, UK

                                                          9
• «Friday night experiments»
+ Flying Frog (The Ignobel Prize in Physics 2000)
                                    In a magnetic field
                                   of about 0.1 Tesla
                                  (superconductivity)




                                   In a magnetic field
                                  of about 16 Tesla
                                  (molecular magnetism)




                                                          10
+ Hamster as a PhD Student




                             11
+ A Real Spider-Man (mimicking gecko foot)
                                        Hairs +
                                        Van der Waals force
                                        = Spider-Man ability




                                        Each hair produces
Array of polyimide hairs
                                        a miniscule force
                                         ≈10^−7 N,
                                         ≈10 N cm^2




2 micron

                                                      12
+ Scotch Tape Method making of graphene (first
   method)




They find field-effect in samples and it was
the main step to
«For groundbreaking experiments regarding the
two-dimensional material graphene»
⫸Applications
Properties: mechanical properties, electrical and thermal conductivity
Applications: composite materials with superior mechanical
  properties, electrical and thermal conductivity




Graphene paper from
Properties: electrical conductivity, optical transparency
Applications: transparent conductor (LCDs, touch-screens, solar cells,
  etc.)
Properties: electronic transport properties, 2D nature
Applications: chemical sensors

Properties: outstanding mobility, good transconductance, ultimate
  thickness
Applications: high-frequency electronics




MIT graphene transistor (1000 GHz)
Sources:
⫸REVIEWS OF MODERN PHYSICS, VOLUME 83, JULY–SEPTEMBER 2011// Nobel
   Lecture: Random walk to graphene// Andre K. Geim
⫸NATURE NANOTECHNOLOGY | ADVANCE ONLINE PUBLICATION
   |www.nature.com/naturenanotechnology/ // Roll-to-roll production of 30-inch
   graphene films for transparent electrodes
⫸A.Geim’s Nobel lecture slides
⫸GRAPHENE: MATERIALS IN THE FLATLAND// Nobel Lecture, December 8, 2010 By
   KONSTANTIN S. NOVOSELOV
⫸Tuning electronic properties of graphene by confinement and disorder, Oleg Yazyev//
   Department of Physics University of California, Berkeley// Materials Sciences Division
   Lawrence Berkeley National Laboratory
Thank you!
Questions?

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Graphene

  • 1. Graphene: enter to the 2D world Made by %username%
  • 2. ⫸What is «graphene»? • Graphene is a single layer of graphite (structure like honeycomb). 2
  • 3. ⫸Properties of graphene • Thinnest imaginable material (and first truly 2D material ever made) • Strongest material ever measured (theoretical limit) • Stiffest known material (stiffer than diamond) • Most stretchable crystal (up to 20% elastically) • Record thermal conductivity (outperforming diamond) • Highest current density at room temperature (million times of those in Cu) 3
  • 4. Conducts electricity in the limit of no electrons • Zero rest mass of charge carriers (not electrons!) • Largest surface area (~3,000 m^2 per gram) • Allows to observe quantum phenomena at room T The electronic structure of graphene (sp2 hybridisation) 4
  • 5. ⫸Biography of Prof. Andre K. Geim: from Ignoble to Nobel Prize In every pencil line we can observe graphene scales. Andre Geim & his team done more than just observe. 5
  • 6. First slide from Geim’s Nobel lecture. 6
  • 7. 1982 MIPT(«FizTeh») graduation. A. Geim: «The pressure to work and to study was so intense that it was not a rare thing for people to break and leave, and some of them ended up with everything from schizophrenia to depression to suicide.» 7
  • 8. 1987 PhD at the Institute of Solid State Physics, Chernogolovka, Russia A.Geim: «Message I took away: NEVER TORTURE STUDENTS WITH BORING/DEAD PROJECTS !» 8
  • 9. • 1987-1990 Research Scientist at the Institute for Microelectronics Technology, Chernogolovka • 1990-1994 Postdoctoral Fellow at the Universities of Nottingham, Bath and Copenhagen • 1994 -2000 Associate Professor (UHD), University of Nijmegen, Netherlands • 2001 -2007 Professor of Physics, University of Manchester, UK • 2007 -2010 EPSRC Senior Research Fellow • since 2002 Director, Centre for Mesoscience & Nanotechnology, University of Manchester • since 2007 Langworthy Professor of Physics, University of Manchester, UK 9
  • 10. • «Friday night experiments» + Flying Frog (The Ignobel Prize in Physics 2000) In a magnetic field of about 0.1 Tesla (superconductivity) In a magnetic field of about 16 Tesla (molecular magnetism) 10
  • 11. + Hamster as a PhD Student 11
  • 12. + A Real Spider-Man (mimicking gecko foot) Hairs + Van der Waals force = Spider-Man ability Each hair produces Array of polyimide hairs a miniscule force ≈10^−7 N, ≈10 N cm^2 2 micron 12
  • 13. + Scotch Tape Method making of graphene (first method) They find field-effect in samples and it was the main step to
  • 14. «For groundbreaking experiments regarding the two-dimensional material graphene»
  • 15. ⫸Applications Properties: mechanical properties, electrical and thermal conductivity Applications: composite materials with superior mechanical properties, electrical and thermal conductivity Graphene paper from
  • 16. Properties: electrical conductivity, optical transparency Applications: transparent conductor (LCDs, touch-screens, solar cells, etc.)
  • 17. Properties: electronic transport properties, 2D nature Applications: chemical sensors Properties: outstanding mobility, good transconductance, ultimate thickness Applications: high-frequency electronics MIT graphene transistor (1000 GHz)
  • 18. Sources: ⫸REVIEWS OF MODERN PHYSICS, VOLUME 83, JULY–SEPTEMBER 2011// Nobel Lecture: Random walk to graphene// Andre K. Geim ⫸NATURE NANOTECHNOLOGY | ADVANCE ONLINE PUBLICATION |www.nature.com/naturenanotechnology/ // Roll-to-roll production of 30-inch graphene films for transparent electrodes ⫸A.Geim’s Nobel lecture slides ⫸GRAPHENE: MATERIALS IN THE FLATLAND// Nobel Lecture, December 8, 2010 By KONSTANTIN S. NOVOSELOV ⫸Tuning electronic properties of graphene by confinement and disorder, Oleg Yazyev// Department of Physics University of California, Berkeley// Materials Sciences Division Lawrence Berkeley National Laboratory