Graphene mobile phone


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Graphene mobile phone

  1. 1. GRAPHENE MOBILE PHONE Supervised By- Presented By- Mr.Kalyan Acharjya Nalini Anand Ass. Prof ,ECE 8EC-52 Department of Electronics And Communication Engineering, Jaipur National University,Jaipur 1
  2. 2. Outlines  Introduction to Graphene.  History.  Structure of Graphene .  Properties of Graphene.  Comparison of Graphene over sillicon.  Why Graphene Mobile Phone ?  Graphene Mobile Phones Vs SmartPhones.  Conclusion and future scope.  References. 2
  3. 3. Introduction to Graphene  "Graphene" is a combination of graphite and the suffix - ene, named by Hanns-Peter Boehm.It’s a 2-D ,crystalline allotrope of Carbon. It can be described as one atom thick layer of graphite. Fig.1- Image of Graphen Film [1] 3
  4. 4. History The Nobel Prize in Physics for 2010 was awarded to Andre Geim and Konstantin Novoselvo at the University of Manchester. Technique used by them to evolve single layer of graphene was scotch tape technique. Fig. 2- Nobel lauretes [2] 4
  5. 5. Structure of Graphene  The atomic structure of isolated, single layer graphene was studied under TEM on a sheet of graphene suspende between bars of metallic grids.  Result of electron diffraction pattern is a honeycomb lattice structure.  The flat sheet of graphene is having amplitude of about 1 nanometer.  Carbon to Carbon bond length in graphene is about 0.142 nm. Fig.3 – Honeycomb structure [3] 5
  6. 6. Properties of Graphene  Thinnest ,200 times stronger than steel.Its youngs modulus is 0.5 Tpa.  Light weight.  Its 97.3% transparent and so dense that not even helium can pass through it.  Lowest resistivity substance known at room temperature i.e,10^(-6) Ω.cm.  Its 20% flexible.  High electrical conductivity.  Unbreakable to some extent.  High thermal stability .  Electron mobility is high at room temperature. 6
  7. 7. Comparison of graphene Vs sillicon 7 Graphene Sillicon 1.Break over voltage is less than 0.3 v. 1.Break over volatge is 0.3 v. 2.Electron transfer is 200 times faster . 2.Electrons transfer is slower. 3.Zero band gap energy. 3.Band gap energy is 1.1 v 4.Its flexibility is high. 4.Flexibility is lower than graphene. 5.Its unbreakable . 5.Its breakable.
  8. 8. Why Graphene Mobile phones ?  Graphene a super wonder material with wide range of propeties better than other semiconductor materials .  From past few years scientist have shown tremendous and fast growth in the graphene made devices and there applicability in broad range from Medical field , mechanical ,electronics and may more to go in future.  1 year back IBM launched the graphene based transistor. Great companies like Nokia, samsung are already indulged in project for making graphene mobile phone. Fig .4- Graphen mobile phone[4] 8
  9. 9. Continued…  Mobile phones made of graphene are highly flexible and light weight, transparent.  It replaces ITO screens which are brittle and expensive by Organic Light emitting diode of single layer graphene.  Batteries used are flexible and liquid batteries which are light in weight and longer life.  High speed device with ultra slim structure and easy to carry in our pockets or wear as wrist watch.  Nokia is soon going to launch its Nokia morph and Nokia 880. which can change its shape according to the message which user want to send. 9
  10. 10. Continued.. 10  In nokia morh the display is touch screen,with large memory capacity. Fig 5. Nokia Morph Technology [5]
  11. 11. Graphene mobile phones Vs. Smart phones  Graphene mobile phones are lighter than smart phones.  Slimmer body .  Having High speed internet as graphene is combined with mettalic nanostructre.along with high communication rate.  Much safer touch screen display as it does not uses ITO(which is breakable).  Better camera sensors more than 41mp camera based on graphene detector. 11
  12. 12. Continued…  Having ligh weight flexible batteries with longer life which is the major proble we are facing today.  Highly transparent structure.  Heat dissipation in graphene phones would be less.  Graphene phone protoype doesn’t not have memory card slot ,while smart phones have it .  No facilities of Bluetooth or data cable is provided in the protoype. 12
  13. 13. Conclusions and future scope  Graphene is new hope for electronic device and replace and rejunivate sillicon .  The cost of garphene phones would be high but it will be available with few distinct feautres .  In future the graphene phones would might be connected with laptops without any device .  The facilitiesof data cables ,headsets, bluethooth would also be implied. 13
  14. 14. References magico-20121032217.html knighthoods-acadmeics 4. /story/20130306-bend-and-flex- mobile-phones 5. bulletproof-maybe-indestructible-too 14
  15. 15. References   silicon/  IEEE Transaction on electronic devices, vol 5.9, no. 11, november 2012.  IGWA 2012 ,Graphene and its application ppt by Astha IIT-Delhi .  Pdf of The Wall street Revelator special report on profiting on graphene technology and trends. 15
  16. 16. Thank you for your presence here. Any Querry ? 16