NANO GENERATOR

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					NANO GENERATOR
    TO POWER NANO DEVICES
INTRODUCTION

   What is the necessary of NANO GENERATOR?
   Materials Science research is now entered a new phase where the
    structure and properties of materials are investigated, characterized
    and controlled at the nano scale.

   Though as sophisticated as their larger counterparts, these devices are
    still burdened because they rely on an outside power.

   Batteries and other traditional sources are too large, and tend to negate
    the size advantages of nano devices.
   To over come these challenges researches are finding alternative
    ways, and nano generator is one promising answer.

   A nano generator take advantage of unique coupled piezo electric &
    semi conducting properties of zinc oxide nano structure (wires),
    which produce small electrical charges when they are flexed.

   By finding a way to collect electricity from multiple nano wires, the
    researchers took a big step toward a practical nano-scale power
    generator.
   Schematic showing the
    experimental setup for
    the piezoelectric
    charge detection from
    an individual barium-
    titanate nano wire.
   Scanning electron
    microscope image
    of the suspended
    nanowire under
    test.
Schematic diagram of a nano generator
A graph showing spikes of electrical discharge as the
nanowires are scanned.
Limitations

   Uniformity of nano wires.

   Life time.
Applications

   Biological sensors and nano devices.

   Microelectromechanical sensors.
Conclusion

   Researchers expect that with optimization, the nano
    generator could produce as much as 4 watts per cubic
    centimeter based on a calculation for a single nano wire

   One day by placing these into people's shoes we can
    generate electricity when walking.

   Powering the simple electronic devices like BJT, FET.
The day when we can charge our cell phone or
iPod just by going for a stroll around the block
could be a step closer.

         Thanks to a "nano-generator".