IN This ppt i have imbibed all the history and origin of nanomaterials

1. Nanotechnology
Group

6. Nanotechnology….?
• Nanotechnology is engineering at the molecular
(groups of atoms) level
• It is the collective term for a range of
technologies, techniques and processes that
involve the manipulation of matter at the
smallest scale (from 1 to 100 nm2)

7. History of nanotechnology
In 1959 Richrad Feynman
presented ideas for creating
Nano scale machines
Norio Taniguchi
introduced the term
‘nanotechnology’
1980s, development in this field was
greatly enhanced with advances in
electron microscopy

8. Approaches in
nanotechnology
Top-down Approach
Creating Nano-scale materials
by physically or chemically
breaking down larger materials
Bottom-up Approach
Assembling Nano materials
atom-by-atom or molecule-by
molecule (self assembling)

9. Example for Bottom-up and Top-down approach

10. Nano materials
Nano powders - building blocks of nano materials
(particles less than 100 nm
in size)
Porous metallic
‘nanocubes’
store large amounts of H2
Nanoparticles of gold for
new catalysts
The scale of
nanopowders
www.cordis.lu/nanotechnology

11. Applications of Nano-technology
• Chemistry
• Engineering
• Electronics
• Textile
• Biomedical
• Aerospace

12. Applications in science ,biology,chemistry,Aerospace

13. Applications in textile and electronics

14. Nanotechnology in
Agriculture
Plant
production
Ex: Delivery of
DNA to plants
Animal
Production
Ex: Nano tube
sensors to detect
hormone level
changes
Animal or
Plant Health
Animal or
Plant Health
Ex: Detect
pathogens
Ex: Detect
pathogens
etc...
etc...

15. Carbon
nanotubes
(sensors, fuel cells,
computers
and televisions)
Nano membrane
filtration systems
(safe, clean,

17. Properties of Nanomaterials
• Mechanical properties
• Physical properties
• chemical properties
• Structural properties