Presentation on the topic: NANO TECHNOLOGY AND NANO MATERIALS Presented by: Ashish Chaturvedi ME , V th , A
Jul 10, 2015
Presentation on the topic:
NANO TECHNOLOGY AND NANO MATERIALS
Presented by:
Ashish Chaturvedi
ME , Vth , A
Contents :
Introduction
Nanoscale
History of Nanotechnology
Need
Approaches
Nano Materials
Advantages
Applications
Implications
Conclusion
What is Nanotechnology?
Semiconducting metal junction
formed by two carbon nanotubes
“Nanotechnology is the study and
manipulation of matter at the nanoscale”
Buckyball
What is Nanoscale?
1.27 × 107 m 0.22 m 0.7 × 10-9 m
Fullerenes C60
12,756 Km22 cm 0.7 nm
10 millions times
smaller
1 billion times
smaller
History of Nanotechnology
1959- According to Richard Feynman-
“There is plenty of room at the room at the bottom.”
1974 – “Nanotechnology” - Taniguchi uses the term
nanotechnology for the first time.
1981 – IBM develops Scanning Tunneling Microscope.
This microscope evolved to allow the manipulation of
individual atoms and molecules in the field of Nano
technology
NEED FOR NANOTECHNOLOGY
Allows the placement of small structures placed with precision,simplicity and low cost
Leads to economic growth
Enhances national security
Improves the quality of life
Leads to job creation
Nanoscale Approaches
Nano Materials
Carbon Nanotubes::
CNTs also known as buckytubes are allotropes of carbon with a cylindrical nanostructure. Nanotubes have been constructed with length-to-diameter ratio of up to 132,000,000:1
the strongest and stiffest materials discovered till to date.
• Single-walled nanotubes have a diameter of close to 1 nanometer, with a tube length that can be many millions of times longer.
Single Walled Nanotubes (SWNT)
• Multi-walled nanotubes (MWNT)consist of multiple rolled layers (concentric tubes) of graphite
Multi Walled Nano Tubes (MWNT)
Buckyballs
• Allotrope of carbon
• Also known as fullerene
• Contains 60 carbon atoms
• Can be compressed upto 70% of it’s original
volume
Advantages
• In Mechanical Engineering
Material becomes stronger,lighter ,cheaper,durableand precise
Manufacturing at almost no cost
Nanobots
• Industrial Application
Computers can become a billion times faster and a million times smaller
Automatic Pollution Cleanup
• Medical Application
End of Illnesses (i.e. cancer, heart disease)
Universal Immunity (i.e. aids, flu)
Body Sculpting (i.e. change your appearance)
• Health and safety issues
Implications of Nanotechnology
Nanoparticles can cause serious illness or damage human body.
Untraceable destructive weapons of mass destruction.
•“Grey-goo”
It is a hypothetical situation where self replicating nanobots go
out of control, and consume all matter on earth.
“The Living Fog” formed by billions of replicating nanobotsgone mad
Thank you…..
Any Queries ????
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