1. INTRODUCTION TO NANOTECHNOLOGYBY
LT CDR V PRAVIN
GUIDED BY
DR D SAMANTA

2. NANOTECHNOLOGY
THE REVOLUTION OF ENDLESS POSSIBILITIES

3. CONTENTS INTRODUCTION NANOTECHNOLOGY BASICS SALIENT FEATURES
WORKING PRINCIPLE
APPROACH, CONCEPTS & STRUCTURE
APPLICATIONS
CONCLUSION

4. Richard P. Feynman

5. FEYNMAN
There is a plenty of room at the bottom
The principles of physics do not speak against the possibility of maneuvering things atom by atom

6. SO WHAT IS IT? Anything smaller than Molecular technology
Size of nanoscale
Every atom in the right place
Zettatechnology

7. SO WHAT IS IT?
Nanotechnology is basically mechanisms that have been built by nanoscale components using to place every atom and molecule in a desired place

8. Extending…… MNT Molecular Nano Technology NSE Nano Scale Engineering
MMT Molecular Manufacturing
Technology
MMS Molecular Machine System

9. IN NUTSHELL LIFE SCIENCE PHYSICAL SCIENCE MATERIAL SCIENCE
INFORMATION SCIENCE

10. NANOTECHNOLOGY BASICS

11. How big (small) are we talking about?
UNDERSTANDING SIZE
How big (small) are we talking about?

12. UNDERSTANDING SIZE
1 meter

13. UNDERSTANDING SIZE
10 centimeters

14. UNDERSTANDING SIZE
1 centimeter

15. UNDERSTANDING SIZE
100 micrometers

16. UNDERSTANDING SIZE
10 micrometers

17. UNDERSTANDING SIZE
1 micrometer

18. UNDERSTANDING SIZE
100 nanometers

19. UNDERSTANDING SIZE
10 nanometers

20. UNDERSTANDING SIZE
1 nanometer

21. NANOMETER………..(nm)
A nanometer is one billionth of a meter (10-9 m). This is roughly ten times the size of an individual atom.

22. SALIENT FEATURES

23. SALIENT FEATURES
At atomic and molecular scales, in the length scale of approximately nanometer range
Fundamentally new properties and functions because of their nanoscale structure

24. SALIENT FEATURES
Ability to control , to see, measure, and manipulate matter on the atomic scale to exploit those properties and functions
Ability to integrate those properties and functions into systems spanning from nano- to macro-scopic scales

25. WORKING OF
NANOTECHNOLOGY

26. How does Nanotechnology work?
1.Atoms are the building blocks for all matter in our universe.
2. Atoms and molecules stick together because they have complementary shapes that lock together, or charges that attract. Just like with magnets, a positively charged atom will stick to a negatively charged atom.

27. Every atom has a exhibits different property at various conditions
The goal of nanotechnology is to manipulate atoms individually and place them in a pattern to produce a desired structure.

28. APPROACHES..
Two approaches can be taken when making something at the nano scale:
Top-Down approach
Bottom-Up approach

29. TOP DOWN APPROACH
The top-down approach is analogous to making a stone statue.
The process involves wastage.
Used in fibres
Seldom used in MNT

30. BOTTOM UP APPROACH Approach one would take to building a house
Less wastage, as strong covalent bonds will hold the constituent parts together.
Limited in how big the structures can be made
Approach used currently

31. MANIPULATION Atomic Force Microscope (AFM)
Scanning Tunneling Microscope (STM)
Virtual Surface Profiling Microscope (VSPM)

32. CONCEPTS Direct Molecular Assembly (DMA)
Indirect Crystalline Assembly (ICA)
Massive Parallel Assembly (MPA)

33. STRUCTURE Nano composites Nano spheres Nano crystals
Nano tubes & Quantum dots

34. OBSTACLES Fragile and unstable nature of nanoparticles
Fusing together of nano particles when their surfaces touch
Loss of special shape and properties

35. APPLICATIONS

36. COMPUTERS
Single atom can be in two places, hence 03 atoms can represent all eight nos at a given time.
Extrapolation of the above fact .
Each logic elements made from a few atoms
Mass storage device in size of a sugar cube

37. COMPUTERS
Tiny nano-engineered ferroelectric crystals could realize of creating nonvolatile random access memory (NVRAM).
Cool chips

38. MEDICINE Fluids of nano particles Slow down ageing process
No scar surgeries
Artificial limbs

39. MEDICINE Cancer and HIV Nano filters- capable of absorbing viruses
Nano catalyst – improves efficiency of a reaction.

40. Applications Contd
Agriculture
Space
Military
Telecommunication

41. Applications Contd..
Sports
Energy
Environment
………..

42. FEAR Nuclear and atomic bombs can have different dimensions
Cloning and miniaturization
Nano medicine- worrying factor!

43. CONCLUSION
Improvements and developments in existing products, such as stronger and lighter materials.
Potential to initiate completely new products and industries that do not exist today

44. CONCLUSION
BIG FUTURE FOR THE TINY
TECHNOLOGY

45. In the end......
As the size decreases...computer will compute faster, materials will be more stronger, medicine will cure more diseases.
The technology that works at the nanometer scale of molecules and atom will be a large part of this future.

46. REFERENCES Springer handbook of nanotechnology

47. THE NEXT BIG THING IS REALLY SMALL