+ Post New Thread
Results 1 to 2 of 2
  1. #1
    Member level 3
    Points: 630, Level: 5

    Join Date
    Aug 2011
    Posts
    54
    Helped
    0 / 0
    Points
    630
    Level
    5

    carbon nanotubes in vlsi

    hi



    i want to know about carbon nanotubes in vlsi


    thankz advance

    •   AltAdvertisement

        
       

  2. #2
    Advanced Member level 3
    Points: 8,204, Level: 21
    Achievements:
    7 years registered
    yadavvlsi's Avatar
    Join Date
    Nov 2010
    Location
    Bangalore, India
    Posts
    978
    Helped
    491 / 491
    Points
    8,204
    Level
    21

    Re: carbon nanotubes in vlsi

    Speed of conventional silicon MOSFET is limited by channel resistance. Velocity of electrons increase with increase applied field, but when a strong enough electric field is applied, the carrier velocity in the semiconductor reaches a maximum value, saturation velocity. When this happens, the semiconductor is said to be in a state of velocity saturation. As the applied electric field increases from that point, the carrier velocity no longer increases because the carriers lose energy through increased levels of interaction with the lattice, by emitting phonons and even photons as soon as the carrier energy is large enough to do so. This in turn limits speed of the transistor. So an array of carbon nanotubes as the channel material instead of bulk silicon in the traditional MOSFET structure. This is called Carbon nanotube field-effect transistor.

    Here are some pdf to get familiar with carbon nanotubes.
    http://nanoparticles.org/pdf/nanotubes.pdf
    http://students.chem.tue.nl/ifp03/Wo...ubes_Final.pdf
    Carbon nanotube - Wikipedia, the free encyclopedia



--[[ ]]--