Nano-Technology is the precise and controlled fabrication or assembly of atoms and molecules at nanometer dimensions

1. www.oeclib.in
Submitted By:
Odisha Electronics Control Library
Seminar
On
Carbon Nano-Technology

2. •What is Carbon Nano-technology
•What is carbon nano material
•Types of carbon nano material
•Pre-cursors of carbon nano material
•Preparations of carbon nano material
•Applications of carbon nano technology
•Advantages & Disadvantages
•Conclusion & References
Contents

3. WHAT IS
NANOTECHNOLOGY
Nano-technology is the precise and
controlled fabrication or assembly of
atoms and molecules at nanometer (10-
9m) dimensions, into novel materials
and devices with unique properties.

4. Electron transfer properties of
macro-sized & nano-sized particles
MATERIAL MACRO-SIZE NANO-SIZE
PbS Is an insulator Becomes
conductor
FeO3 Band gap is 1.95
eV
Band gap is 3.1
eV
Carbon Electron emission
at 2500 V .
Electron emission
at much lower
voltage-2.5V

5. WHAT IS CARBON NANO-
MATERIAL
Carbon nano beads
 Carbon nano fibers
 Carbon nano tubes
 Diamond like carbon

6. •Spherical (Solid and hollow)
•Sizes 200 nm - 800 nm
•Interconnected &
• spongy…
CARBON NANOBEADS ARE

7.  Coiled Type Carbon Fiber
Flexible Hair Like Fiber
Octopus Like nano Fiber
 Cactus Flower Like Fiber & many
more …….
Types Of Carbon Nano-Fibers

8. COILED CARBON NANO-
FIBERS

9. FLEXIBLE HAIR LIKE &
STRAIGHT CNF

10. OCTOPUS LIKE CARBON NANO
FIBERS

11. CACTUS FLOWER LIKE CARBON
NANO FIBER

12. CARBON NANO-TUBES ( CNT )
• Coiled Carbon nanotubes
• Branched CNTs
• Bamboo-shaped CNTs
• Y- junctions CNTs
• Filled(metal) CNTs

13. COILED,BRANCHED, BAMBOO
SHAPED,Y-SHAPED CNT

14. Carbon nano - materials are
synthesized from fossil fuels related
precursors e.g. acetylene, benzene,
xylene & also from graphite.
The latest trend is to use plant based
precursors
PRECURSORS FOR CNT
SYNTHESIS

15. PREPARATION OF CNT
Carbonaceous material (precursor)
is heated to just below their boiling
point to generate vapor.
The vapor along with a carrier gas (
N2 or Ar) is sent to a furnace heated at
pyrolyzing temperature (650 – 10000C).
Pyrolyzed material is CNM; which is
further purified to remove graphitic
carbon.

16. APPLICATION OF
NANOTECHNOLOGY
 NANOSCALE DIGITAL CHIP DESIGN
 BIOCHIPS FOR HEALTH CARE
 NANOTECHNOLOGY FOR ENERGY
STORAGE
 FOR DRUG DELIVERY
 FOR KILLING CANCEROUS CELLS

17. Safe and affordable.
Medicine (detection of
diseases).
In computer use.
Pollution free environment.
ADVANTAGES

18. Disadvantages
Atomic bomb & grenade.
Spread diseases.
World wide hunder.
Computer generated fake
reality.

19. CONCLUSION

20. REFERENCES
www.google.com
www.wikipedia.org
www.oeclib.in
www.projectsreports.org

21. Thanks

22. QUERY ?