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Welcome To Our PSA Presentation
America International University-Bangladesh
Rethwan Faiz
Presented By
RETHWAN FAIZ
GRAPHENE NANORIBBONS
Presentation Tropic
 Carbon based material
 Discovery and innovation of Graphen
 Graphene nanoribbons structure
 Application of Graphene n...
 Replace silicon-based micro
electronics.
 Exhibit superior physical
properties in many aspects.
 Industrial applicatio...
History….
 The term grapheme 1962—Hanns-Peter Boehm coined
graphene as a combination of graphite and the suffix –ene to
d...
Innovation…
 Mitsutaka Fujita (藤田 光孝 Fujita Mitsutaka)
 Introduced graphene nanoribbons as a theory model to
examine the...
 Graphene nanoribbons
 GNR’s
 Nano-graphene ribbons
Definition: thin strips of graphene
 The structure of Graphene consists of…
 Honeycomb Lattice
 2 Dimension thin layer of Carbon atoms
Lattice Structure…
v...
 The carbon-carbon bond length in graphene is about 0.142
nanometers.
 Graphene sheets stack to form graphite.
 One sta...
 The Energy gap of the 1 dimensional graphene nanoribbons
(GNRs), can be…
 Produced lithographically by patterning 2 dim...
 Graphenenanoribons (GNRs)
can be obtained by
unzipping the single wall
carbon nanotubes.
 Graphene is considered a
semi...
 The ribbon form of graphene (GNR)
 Inherited almost all of the attractive properties of the carbon nanotube and
graphen...
 Zigzag & Armchair GNRs are metallic or semiconducting
electronic properties that depends on the width of the
nanoribbon....
 In transparent
 Conductive electrodes
 In liquid crystals
 Solar cell systems
 Light emitting diodes
 P-N junctions...
 A p–n junction is formed at the boundary between a p-
typeeand n-type semiconductor-type created in a single crystal
of ...
 A transistor is a semiconductor device used to amplify and
switch electronic signals and power.
 The field-effect trans...
 New types of the graphene base material can be achieved.
 Carbon based material have different application depend on
th...
1.Bu, H., et al., Atomistic simulations of mechanical properties of
graphene nanoribbons. Physics Letters A, 2009. 373(37)...
Questions
Thank You
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Psa presentation by Rethwan Faiz

  1. 1. Welcome To Our PSA Presentation America International University-Bangladesh
  2. 2. Rethwan Faiz Presented By RETHWAN FAIZ
  3. 3. GRAPHENE NANORIBBONS Presentation Tropic
  4. 4.  Carbon based material  Discovery and innovation of Graphen  Graphene nanoribbons structure  Application of Graphene nanoribbons Contents
  5. 5.  Replace silicon-based micro electronics.  Exhibit superior physical properties in many aspects.  Industrial applications Carbon-based nanoelectronics….
  6. 6. History….  The term grapheme 1962—Hanns-Peter Boehm coined graphene as a combination of graphite and the suffix –ene to describe single-layer carbon foils.  Hanns-Peter Boehm: Born January 9, 1928 in Paris German Chemist Professor Emeritus in Ludwig-Maximillians University in Munich,Germany Pioneer of graphene research
  7. 7. Innovation…  Mitsutaka Fujita (藤田 光孝 Fujita Mitsutaka)  Introduced graphene nanoribbons as a theory model to examine the edge and nanoscale size effect in graphene.  Japanese Physicist  Born: August 16, 1959  Died: March 18, 1998
  8. 8.  Graphene nanoribbons  GNR’s  Nano-graphene ribbons Definition: thin strips of graphene
  9. 9.  The structure of Graphene consists of…  Honeycomb Lattice  2 Dimension thin layer of Carbon atoms Lattice Structure… v Basic structure of carbon hexagon of graphene
  10. 10.  The carbon-carbon bond length in graphene is about 0.142 nanometers.  Graphene sheets stack to form graphite.  One stack of 3 million sheets = 1 millimeter thick.  Graphene is the basic structural element of some carbon allotropes including… • Graphite • Charcoal • Carbon Nanotubes • Fullerence Chemical Structures…
  11. 11.  The Energy gap of the 1 dimensional graphene nanoribbons (GNRs), can be…  Produced lithographically by patterning 2 dimensional graphene through a chemical route  Different crystallographic orientations  Tuned with varying widths Energy Gap…
  12. 12.  Graphenenanoribons (GNRs) can be obtained by unzipping the single wall carbon nanotubes.  Graphene is considered a semimetal, because…  There is no present band gap (band gap is zero).  There is a narrow channel width (transverse direction) & a band gap can be provided. Energy Gap…
  13. 13.  The ribbon form of graphene (GNR)  Inherited almost all of the attractive properties of the carbon nanotube and graphene.  Additional benefit of a tunable band gap.  Tunable semiconducting behaviors vis a vis changing ribbon width.  The first bandgap measurements are made by...  Phaedon Avouris.  Philip Kim  Opening of energy gaps…  Reported: 0.5 eV in a 2.5 nm wide armchair ribbon Electronic Properties…
  14. 14.  Zigzag & Armchair GNRs are metallic or semiconducting electronic properties that depends on the width of the nanoribbon.  Electronic properties depend on…  the edge shape 1. armchair 2. 2. zigzag Electronic Properties…
  15. 15.  In transparent  Conductive electrodes  In liquid crystals  Solar cell systems  Light emitting diodes  P-N junctions  Schotkky diodes  Field effect transistors Applications…
  16. 16.  A p–n junction is formed at the boundary between a p- typeeand n-type semiconductor-type created in a single crystal of semiconductor by doping.  A Schotkky is a special case of a p–n junction, where metal serves the role of the n-type semiconductor Junctions…
  17. 17.  A transistor is a semiconductor device used to amplify and switch electronic signals and power.  The field-effect transistor (FET) is a transistor that relies on an electric field to control the conductivity of a channel of one type of charge carrier in a semiconductor material. Transistors…
  18. 18.  New types of the graphene base material can be achieved.  Carbon based material have different application depend on their structure. Conclusion…
  19. 19. 1.Bu, H., et al., Atomistic simulations of mechanical properties of graphene nanoribbons. Physics Letters A, 2009. 373(37): p. 3359-3362. 2.Eduardo V Castro1, N.M.R.P., J M B Lopes dos Santos1, and F.G.a.A.H.C. Neto4, Bilayer graphene: gap tunability and edge properties. Journal of Physics, 2010. 129(1): p. 012002(8). 3.connor, O., Liu,, CNTFET Modeling and Recongurable Logic-Circuit Design. Ieee Transactions on Circuits and Systems, 2007. 54(11): p. 2365- 2379. 4.Group, C.M., Moore' s Law: More or Less. www. cmg.org/measureits/issues/mit41/m_41 2.html, 2010. 5.Novoselov, K.S., Electronic properties of graphene. phys. stat. sol. , 2007. 244(11 / DOI 10.1002/pssb.200776208): p. 4106-4111. References…
  20. 20. Questions
  21. 21. Thank You
  • agnivanshi

    May. 9, 2017

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