Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 171 views

    Graphe NE: The Wonder Material

    Uploaded by

    rawal_sanjay013
    Graphene is a one atom thick material that is stronger than diamond and conducts electricity much faster than silicon. It has many potential applications such as in transistors, memory devices, antibacterial products, and touch displays. Graphene was discovered in 2004 by researchers who peeled layers of carbon from graphite using scotch tape, leaving a two-dimensional film of carbon just one atom thick. Its high electron mobility and conductivity make it promising for next generation electronics that could be faster and more energy efficient than what is currently available.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOC, PDF, TXT or read online from Scribd

    Graphe NE: The Wonder Material

    Uploaded by

    rawal_sanjay013
    171 views8 pages
    Graphene is a one atom thick material that is stronger than diamond and conducts electricity much faster than silicon. It has many potential applications such as in transistors, memory devices, antibacterial products, and touch displays. Graphene was discovered in 2004 by researchers who peeled layers of carbon from graphite using scotch tape, leaving a two-dimensional film of carbon just one atom thick. Its high electron mobility and conductivity make it promising for next generation electronics that could be faster and more energy efficient than what is currently available.

    Original Description:

    Original Title

    GRAPHENE

    Copyright

    © Attribution Non-Commercial (BY-NC)

    Available Formats

    DOC, PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    Graphene is a one atom thick material that is stronger than diamond and conducts electricity much faster than silicon. It has many potential applications such as in transistors, memory devices, antibacterial products, and touch displays. Graphene was discovered in 2004 by researchers who peeled layers of carbon from graphite using scotch tape, leaving a two-dimensional film of carbon just one atom thick. Its high electron mobility and conductivity make it promising for next generation electronics that could be faster and more energy efficient than what is currently available.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    171 views8 pages

    Graphe NE: The Wonder Material

    Uploaded by

    rawal_sanjay013
    Graphene is a one atom thick material that is stronger than diamond and conducts electricity much faster than silicon. It has many potential applications such as in transistors, memory devices, antibacterial products, and touch displays. Graphene was discovered in 2004 by researchers who peeled layers of carbon from graphite using scotch tape, leaving a two-dimensional film of carbon just one atom thick. Its high electron mobility and conductivity make it promising for next generation electronics that could be faster and more energy efficient than what is currently available.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    of 8

    GRAPHE NE

    THE WONDER MATERIAL

    Name -sanjay rawal Roll .no01315007309 E.C.E 4th year

    I have always been fascinated about new discoveries and technologies and this new found material is something to talk about, somthing that is soon going to change the whole scenario . The way integrated circuit, computer displays,solar cell etc. perform is soon to be changed by this material for good.

    The applications of this material are endless so so it is worthwhile to have a seminar on this wonder material.

    INTRODUCTION Graphene,the new won der material to come out of science laboratories,is only one atom thick but is stronger than diamond and conducts electricity 30 times faster than the silicon in computer chips.It is creating tremendous buzz among

    physicists and electronic engineers. Studies on grapheme have revealed that electrons travel many times faster in Graphene than in silicon,the basis of all modern computer chips. Carbon atoms in Graphene are arranged in a honeycombshaped,hexagonal lattice.The substance is chemically very simple but extremely strong,conducts electricity,dissipates heat and is transparent.There is a surge of interest in it to replace semiconductors in next-generation computers,touch screens and other electronic gadgets.The electrons moved at very high velocities previous research has monitored speeds 1,000 kilometres per second,some 30 times faster than in

    silicon and in a way that mimicks photons,or particles of light. The discovery suggests that it may be possible to create a new generation of super-fast mobile phones and computers based on graphene. Professor Kostya Novoselov of Manchester University,who shared last year's Nobel prize in physics with colleague Andre Geim for their work on graphene,said research on layers of the material held in a vacuum has shown that electrons behave very differently when travelling through graphene. Electrons in graphene have huge mobility,they travel very fast.Its quite a big result in terms of the physics and it may have some implications in terms of potential

    applications, Professor Novoselov said. Professor Geim and Professor Novolosev discovered graphene by using Scotch tape to peel away layers of carbon from a piece of graphite (pencil lead). They were left with a twodimensional film of carbon,one atom thick.Graphene possesses a number of properties,such as,an extremely high electron and thermal conductivities due to high velocities of electrons and high quality of the crystals

    APPLICATIONS
    1.

    Graphene transistors-Due to its high electronic quality,


    graphene has also attracted the interest of technologists who see it as a way of constructing ballistic transistors.

    2.

    Graphene-FFET -is promising as a future memory

    deviceResearchers at the University of California at Los Angeles have developed a new memory device based on Graphene. This is a ferroelectricfield-effect-transistor (FFET) in which graphene is used to write and read the electric dipole moments of an underlying ferroelectric material.This graphene-FFET has a high fidelity and low operating voltage. Future work will focus on improving the speed of the device's performance. 3.

    Anti-bacterial-The Chinese Academy of Sciences has found that


    sheets of graphene oxide are highly effective at killing bacteria such as Escherichia coli. This means graphene could be useful in applications such as hygiene products or packaging that will help keep food fresh for longer.

    4.

    Hybrid graphene-metal electrode-

    promise unbreakable touch displays, flexible OLEDs and solar cellsResearchers from Rice University created thin hybrid metal-graphene electrodes - that outperform ITO electrodes, are also more transparent and less resistance to electric current. These electrodes can be used to create non-glass touch displays, transparent and flexible OLEDs, solar cells and lighting products.The new electrode is a thin film of single-layer graphene and a fine grid of metal nanowire. It's basically a hybrid-graphene electrode. The metal is used to enhance the conductivity at the required transparency. The metal grid strengthens the graphene, and the graphene fills all the empty spaces between the grid. The researchers found a grid of five-micron nanowires made of inexpensive, lightweight aluminum did not detract from the material's transparency.

    This is just the beginning the horizon is yet to be explored

    You might also like