Nanotechnology involves creating and manipulating materials on an atomic or molecular scale. It can produce materials with novel properties due to their small size. The document discusses various applications of nanotechnology in areas like engineering, medicine, textiles and more. It also describes techniques for synthesizing and characterizing nanomaterials, such as top-down methods that break down bulk materials and bottom-up methods that build materials up atom by atom.

1. PLAR - Nanotechnology Nanotechnology – an overview PL. Arunachalam, Diploma in Computer Engineering Thiagarajar polytechnic college Salem.

4. BEST COMPARSION PLAR - Nanotechnology

5. PLAR - Nanotechnology “ I can hardly doubt that when we have some control of the arrangement of things ON A SMALL SCALE we will get an enormously greater range of possible properties that substances can have.” … .. R. FEYNMAN California Institute of Technology, December 26, 1959 atom by atom. maneuvering

8. INTERDISCIPLINARY APPROACH REQUIRED PLAR - Nanotechnology Engineering Physical Sciences Bioscience NANOTECHNOLOGY

9. FIELDS OF NANOTECHNOLOGY PLAR - Nanotechnology Nanotechnology Nanomedicine Nanobiotechnology Nanolithography Nanoelectronics Nanomagnetics Nano Biodevices NEMS (nano electro mechanical sys) Nano Biomimetic materials Nano Pulp & Paper Technology

11. PLAR - Nanotechnology LOTUS – SELF CLEANING Water lily Super hydrophobicity - Self cleaning SEM Surface roughness – Self cleaning Rinsing with water Water drops – clean surface Applications -

13. PLAR - Nanotechnology Atlantic – Aprilia fuel cell bike Photovoltaic cell Fuel Cell NANOTECHNOLOGY – FUEL CELL Hydrogen

14. PLAR - Nanotechnology NANOTECHNOLOGY – COSMETIC APPLICATIONS Acne treatment Herbal liposome for cosmetic applications Before treatment After treatment Titanium oxide

15. NANO MATERIAL - OPTICAL PROPERTIES PLAR - Nanotechnology Gold (Bulk) Nano Gold colloids Au – Cancer Treatments Applications

16. PLAR - Nanotechnology NANO- TEXTILE APPLICATIONS Nano Jacket Student’s uniform Nano tie and scarf

17. PLAR - Nanotechnology Synthesis of Nanomaterials Synthesis of Nanomaterials Top - down method (Destruction) Bottom-up method (Construction)

18. Synthesis of Nanomaterials PLAR - Nanotechnology Top - Down method High energy Ball Milling Lithography Gas condensation Severe plastic deformation

19. SYNTHESIS OF NANOMATERIALS PLAR - Nanotechnology Bottom Up method Physical Vapor Deposition Chemical Vapor Deposition Plasma Processes Sol-gel Processing Soft- Lithography Self- Assembly

21. PLAR - Nanotechnology Optical Microscope Scanning Electron Microscope HIGH DEPTH OF FIELD NANOMATERIAL

22. PLAR - Nanotechnology JEM-2100F TRANSMISSION ELECTRON MICROSCOPE

23. PLAR - Nanotechnology WORKING PRINCIPLE OF AFM www.shef.ac.uk/~htsl/afm.htm Atomic Force Microscope Force Surface Atoms Tip Atoms Photo detector Laser Beam Tip Cantilever Line Scan Surface

25. PLAR - Nanotechnology Thanking You pl_arun