Nano Technology


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Basics of Nano

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Nano Technology

  1. 1. PLAR - Nanotechnology Nanotechnology – an overview PL. Arunachalam, Diploma in Computer Engineering Thiagarajar polytechnic college Salem.
  2. 2. Synopsis <ul><li>Introduction </li></ul><ul><li>Applications </li></ul><ul><li>Synthesis of nanomaterials </li></ul><ul><li>Characterization and detection techniques </li></ul><ul><li>Concluding remarks </li></ul>PLAR - Nanotechnology
  3. 3. <ul><li>Nanotechnology is the creation of functional materials, devices, and systems through control of matter on an atomic or molecular scale. </li></ul><ul><li>The creation and use of structures, devices and systems that have novel properties and functions because of their small and/or intermediate size. </li></ul>DEFINITION OF NANOTECHNOLOGY PLAR - Nanotechnology
  4. 4. BEST COMPARSION PLAR - Nanotechnology
  5. 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
  6. 6. <ul><li>Atomic domains (grains, layers or phases) spatially confined to 100nm in at least one dimension </li></ul><ul><li>Zero dimension – clusters of aspect ratio 1 to infinity – Quantum dots </li></ul><ul><li>One dimension – Multilayers – Nanowires, CNT (Carbon nano tubes) </li></ul><ul><li>Two dimension – Ultrafine-grained over layers (coatings) </li></ul><ul><li>Three dimension – Nanophase materials </li></ul>NANOMATERIALS – DEFN. & CLASSIFICATION PLAR - Nanotechnology
  7. 7. UNIQUENESS OF NANOMATERIALS <ul><li>Grains, pores, interface thickness and defects are of similar dimensions. </li></ul><ul><li>Nanomaterials have a large surface area but their volume is very small. </li></ul><ul><li>Improve mechanical properties (increased strength, toughness etc.,) </li></ul><ul><li>High melting point compounds. </li></ul>PLAR - Nanotechnology
  8. 8. INTERDISCIPLINARY APPROACH REQUIRED PLAR - Nanotechnology Engineering Physical Sciences Bioscience NANOTECHNOLOGY
  9. 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
  10. 10. Applications of Nanomaterial Based Products PLAR - Nanotechnology <ul><li>Automotive industry </li></ul><ul><li>Engineering </li></ul><ul><li>Medicine </li></ul><ul><li>Cosmetics </li></ul><ul><li>Textile </li></ul><ul><li>Sports </li></ul><ul><li>Chemical industry </li></ul><ul><li>Electronic industry </li></ul>
  11. 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 -
  12. 12. PEACOCK FEATHER PLAR - Nanotechnology <ul><li>Nano structured particles </li></ul>Applications <ul><li>Colour never fade </li></ul><ul><li>Scratch free </li></ul><ul><li>Cleaning surface </li></ul>
  13. 13. PLAR - Nanotechnology Atlantic – Aprilia fuel cell bike Photovoltaic cell Fuel Cell NANOTECHNOLOGY – FUEL CELL Hydrogen
  14. 14. PLAR - Nanotechnology NANOTECHNOLOGY – COSMETIC APPLICATIONS Acne treatment Herbal liposome for cosmetic applications Before treatment After treatment Titanium oxide
  15. 15. NANO MATERIAL - OPTICAL PROPERTIES PLAR - Nanotechnology Gold (Bulk) Nano Gold colloids Au – Cancer Treatments Applications
  16. 16. PLAR - Nanotechnology NANO- TEXTILE APPLICATIONS Nano Jacket Student’s uniform Nano tie and scarf
  17. 17. PLAR - Nanotechnology Synthesis of Nanomaterials Synthesis of Nanomaterials Top - down method (Destruction) Bottom-up method (Construction)
  18. 18. Synthesis of Nanomaterials PLAR - Nanotechnology Top - Down method High energy Ball Milling Lithography Gas condensation Severe plastic deformation
  19. 19. SYNTHESIS OF NANOMATERIALS PLAR - Nanotechnology Bottom Up method Physical Vapor Deposition Chemical Vapor Deposition Plasma Processes Sol-gel Processing Soft- Lithography Self- Assembly
  20. 20. CHARACTERIZATION AND DETECTION TECHNIQUES <ul><li>Essential requirements for the development, manufacturing and commercialization of nanomaterials is their physical, chemical and biological properties on a nanoscale level </li></ul><ul><li>For determination of atomic structure and chemical composition of solid or liquid nanomaterials – spectroscopic methods, X-ray and Neutron diffraction </li></ul><ul><li>For determination of size and shape – Electron microcopies (SEM or TEM) </li></ul>PLAR - Nanotechnology
  21. 21. PLAR - Nanotechnology Optical Microscope Scanning Electron Microscope HIGH DEPTH OF FIELD NANOMATERIAL
  23. 23. PLAR - Nanotechnology WORKING PRINCIPLE OF AFM Atomic Force Microscope Force Surface Atoms Tip Atoms Photo detector Laser Beam Tip Cantilever Line Scan Surface
  24. 24. CONCLUDING REMARKS PLAR - Nanotechnology <ul><li>Choice of nanocrystalline or nanostrucured material </li></ul><ul><li>Application </li></ul><ul><li>Final property requirement </li></ul><ul><li>Grain sizes </li></ul><ul><li>Density </li></ul><ul><li>Porosity </li></ul><ul><li>Choice of a suitable process </li></ul><ul><li>Top down or bottom up approach </li></ul><ul><li>Economics or viability </li></ul><ul><li>Nano resisters are like papers. </li></ul><ul><li>. </li></ul><ul><li>. </li></ul><ul><li>. </li></ul><ul><li>. </li></ul><ul><li>. </li></ul>
  25. 25. PLAR - Nanotechnology Thanking You pl_arun