Nanotechnology - An overview

1. NANO TECHNOLOGY
Presented By – Mast. Chetan Jaganure
Mast. Mithilesh Bhat.
Institute – Bapuji Salunkhe Institute of Engineering and Technology.
Department of Mechanical Engineering
National level paper presentation - 2015

3. • Study of manipulating matter on an nano scale.
• Nanotechnology refers to the constructing and
engineering of the functional systems at very nano
level or we can say at atomic level rather even
small than that.
Definition

4. History
• Concept was presented in 1959 by the famous
professor of physics Dr.Richard P.Feynman.
• Invention of the scanning tunneling
microscope in 1981 and the discovery of
fullerene(C60) in 1985 lead to the emergence
of nanotechnology.
• The term “Nano-technology" had been coined
by Norio Taniguchi in 1974.

5. How Small Is Nanoscale?
A nanometer is…
one billionth of a meter
DNA Sample: Approx. 2 nm Human Hair: Approx. 1x105 nm

6. Understanding Nanoscale

7. WHY Micro to Nano ?
• Things at atomic level or even at smaller
level do not follow classical mechanics so
quantum mechanics theory evolved.
• For future technology properties such
as compactness, high strength to weight
ratio, light in weight, etc. were required
which were fulfilled by nano materials.

8. Who Cares About Nanotechnology ?
We All Should Care!
– Because it can bring revolution in the current
industrialization and manufacturing processes.

9. Tools & Technology

10. • There are several important modern developments.
– The atomic force microscope (AFM).
– The Scanning Tunneling Microscope (STM) are
scanning probes that launched nanotechnology.

11. • Zinc oxide:
– Dirt repellent, hydrophobic (fabrics)
• Silver ion:
– Healing property (ointments, )
• Aluminum silicate:
– Scratch resistance (Paint, ceramic,paper)
• Gold ion:
– Chip fabrication, drug delivery.

12. Advantages
Industrial MedicalMaterial
With NT, we can create
unique materials and
products which
are -
 Stronger
 Lighter
 Cheaper
 Durable
 Precise
 Computers can
become a billion
times faster and a
million times
smaller
 Automatic
Pollution Cleanup
 Manufacturing at
almost no cost
 End of Illnesses
(i.e. cancer, heart
disease)
 Universal
Immunity (i.e. aids,
flu)
 Body Sculpting
(i.e. change your
appearance)

13. Disadvantages
– Loss of jobs (in manufacturing, farming, etc)
– Carbon Nanotubes could cause infection of lungs
– Atomic weapons could be more accessible and destructive
– Sight of human (chemical warfare)
– Presently, nanotechnology is very expensive and developing
it can cost you a lot of money

14. Application
Everyday applications –
• Nanoscale additives for baseball bats, tennis rackets, motorcycle helmets,
automobile bumpers lightweight, stiff, durable, and resilient.
• Cosmetic products (creams and lotions) cleansing; absorption;
antioxidant, anti-microbial
• Nanocomposites in food container carbon dioxide leakage out of
carbonated beverages,
• Growth of bacteria food fresher and safer, longer

16. Electronics
Nano Transistors (Si replaced by CNT) Nano Diodes
OLED (Organic Light Emitting Diode) Quantum Computers

17. Nano computer concept

18. Nanotechnology in Mobile
Morph, a nanotechnology concept device
developed by Nokia Research Center (NRC)
and
the University of Cambridge (UK).
• super hydrophobic making it extremely dirt repellent.
• charge itself by nanowire grass
• Nanoscale mesh of fibers allows to Bent into any number of conceivable shapes.

19. Energy
Batteries
Fuel Cells Solar Cells

20. Medical

21. Drug Delivery

22. Artificial Retina

23. Tissue Regeneration

24. Fabrics
Addition of nano-sized components to
conventional materials to improve
performance.
Ex. Some clothing manufacturers are making
water and stain repellent clothing using nano-
sized whiskers in the fabric that cause water to
bead up on the surface.
Water droplet on Lotus leaf
Water droplet on fabric

27. Possibilities for the future
Possible to manufacture lighter, stronger, and programmable
materials that
require less energy to produce than conventional material
and that promise greater fuel efficiency in land
transportation, ships, aircraft, and space vehicles.
•The future of nanotechnology could very well include the use
of nanorobotics.
•These nanorobots have the potential to take on human tasks
as well as tasks that humans could never complete.
• Quantum Tunneling
Nanobots because of their replicating behavior can be a big threat.

28. Any questions?