Vacuum Tubes to Silicon and beyond


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Vacuum Tubes to Silicon and beyond

  1. 1. Vacuum Tubes to Silicon and beyond<br />Faridi Qaium<br />Computer Science<br />
  2. 2. Vacuum Tube<br />Source:<br />
  3. 3. Replacement for Vacuum tubes<br />Gallium arsenide<br />Silicon<br />Very powerful<br />Large energy gap<br />Has capability of transmitting light<br />Does not react to extreme temperature condition<br />Made from sand<br />Strong and durable<br />Cost effective<br />
  4. 4. Moore’s law<br />Source:<br />
  5. 5. Requirements to replace silicon<br />Economical<br />Durable<br />Potential<br />
  6. 6. 3D memory<br /><ul><li>Stacks layers of transistors on top of each other
  7. 7. Carbon nanotubes are inserted to control a group of transistor
  8. 8. Implemented today</li></ul>Source:<br />
  9. 9. Gallium arsenide (GaAs)<br />Used in numerous electronics today<br />Does not react to extreme temperatures<br />Large band gap<br />Allows for light transmission<br />Expensive<br />Source:<br />
  10. 10. Gallium Nitride (GaN)<br /><ul><li> Band gap size twice the size of silicon and GaAs
  11. 11. Does not generate a lot of heat
  12. 12. Critical breakdown field 3.0
  13. 13. Expensive</li></li></ul><li>Graphene<br />Made from graphite<br />No bandgap<br />Memory leak<br />No mass production technique yet<br />Hard to manufacture<br />
  14. 14. Research design<br />Create a wafer of Graphene transistors<br />Stack them on top of each other<br />Insert carbon nanotubes as a method of control structure<br />Carefully chose an algorithm to control these gates<br />Finally test the chip by using it in a live system and compare the performance against its silicon counter part<br />