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Dav jalandhar-dr. r.k. khandal - sri
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Dav jalandhar-dr. r.k. khandal - sri

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  • Effect of Nanotechnology:Size and morphology of carotenoide particles can be modified during precipitation process. Typical sizes are 50 – 200nmin water; together with variations in morphology differences in color-strength can be reached. Bioavailability increases.
    Application:Fortification and coloring of food: cereals, dairy, lemonades, ACE- and multivitamin drinks (Beta-Carotene as a colorant and provitamin A)
    Indirect coloring of food by usage as feed-additive for animals (laying hen, salmon)
    Ingredients for supplements with high stability and bioavailability (Beta-Carotene as a source of vitamin A and healthy antioxidant in multivitamin tablets)
    Market:No information to be communicated.
    Development Status:Commercial scale since 1990
    Risks [to be communicated only if requested]:No risks because of the biodegradablility of the material.
    Contact: Dr. Kindler, ME/T
  • Effect of Nanotechnology:Size and morphology of carotenoide particles can be modified during precipitation process. Typical sizes are 50 – 200nmin water; together with variations in morphology differences in color-strength can be reached. Bioavailability increases.
    Application:Fortification and coloring of food: cereals, dairy, lemonades, ACE- and multivitamin drinks (Beta-Carotene as a colorant and provitamin A)
    Indirect coloring of food by usage as feed-additive for animals (laying hen, salmon)
    Ingredients for supplements with high stability and bioavailability (Beta-Carotene as a source of vitamin A and healthy antioxidant in multivitamin tablets)
    Market:No information to be communicated.
    Development Status:Commercial scale since 1990
    Risks [to be communicated only if requested]:No risks because of the biodegradablility of the material.
    Contact: Dr. Kindler, ME/T

Transcript

  • 1. SHRIRAM INSTITUTE FOR INDUSTRIAL RESEARCH 19, UNIVERSITY ROAD, DELHI-110 007 Dr. R. K. KHANDAL DIRECTOR NANOSCIENCE TO NANOTECHNOLOGY: SCOPE, OPPORTUNITIES & CHALLENGES
  • 2.  Scope of nanotechnology  Definition  Domain  Process  Dimensions  Features  Opportunities of nanotechnology  Industries  Health Care  Colorants  Organic & Inorganic materials  Biomaterials  Challenges of nanotechnology  Process technology  Manufacture  Disposal  Path Forward OUTLINE
  • 3.  Nanomaterials: Materials consisting of particles of the size of nanometer Volume = Surface area x thickness  For a given volume:  Surface area Thickness  More atoms at surface than in the interior  Extraordinary activity SCOPE: DEFINITION
  • 4. SCOPE : DOMAIN Keywords Domain Particle size Distribution in the continuous phase Modification of surfaces Interfacial tension Surfaces Interfaces Rising volume fraction Homogeneity of phases of dispersing phase  Domain of Nanotechnology: Multi-phase systems  Liquid : Liquid  Solid : Liquid  Surfaces and interfaces involving different phases  Gas : Liquid  Gas : Solid
  • 5. Systems Process Emulsion Macro Micro Dispersion Coarse Fine Solution Colloid SCOPE: PROCESS  A process to create a continuous dispersed phase as fine as possible for homogeneity with the dispersing phase (Liquid / Liquid; Gas/Liquid) (Solid / Liquid) (Solid / Liquid; Liquid/Liquid) Solubilization
  • 6. SCOPE : DIMENSIONS What Happens Dimensions  Particle size More from less  Surface area Enhanced coverage  Activity Novel products  Efficiency Improved performance per unit mass  Maximum possible benefits from minimum possible inputs  Effecting changes through and at atomic scale
  • 7. SCOPE: FEATURES SIZE- DEPENDENT PROPERTIES As the scale goes down, the activity rises mainly due to the lowering distances at which the inter-particle interactions occur leading to evolution of energy Extremely High Emulsion High surface energy, Non-homogeneous unstable Thermodynamically Irreversible System Scale Activity Remarks Mixtures >micrometer Low Suspension Dispersion micrometer Medium Kinetically stable unstable Microemulsion Solubilised nanometer Moderately High stability probable Thermodynamic Macromolecular angstrom High Molecular Atomic Very High Nuclear Spontaneous atomic sub-atomic Thermodynamically stable Basis for new materials Source of energy
  • 8. NANOSCIENCE TO NANOTECHNOLOGY “MACRO TO NANO” MATERIALS Copper Macro PROPERTIES Nano Opaque Transparent Platinum Catalyst Aluminium Stable Combustible Inert Gold Inert Catalyst Unique properties at the nanoscale motivates the exploitation of nanomaterials
  • 9. OPPORTUNITIES: NANOTECHNOLOGY N A N O S C I E N C E Carbon Nanotube Nanowire N A N O T E C H N O L O G Y Carbon nanotube on plastics Array of Carbon nanotube-devices TiO2 Sunscreens Coatings Nano-TiO2
  • 10. OPPORTUNITIES: NANOMATERIALS FOR INDUSTRIES NANOPARTICLE Electronics Multiuse Chemical Industries Defence OpticsCosmetics Medical/Biology Solar CellsSensors Electrocatalysis Photocatalysis  For any application, nanotechnology is a blend of the science of physics, chemistry and biology.  Field of optics has seen a lot success with nanotechnology; coatings and drug delivery systems are an upcoming field now.
  • 11. OPPORTUNITIES: NANOMATERIALS FOR HEALTH CARE Drug Delivery Nanobots Nanoimplants
  • 12. OPPORTUNITIES: NANOCOLORANTS ORGANIC DYE INORGANIC PARTICLES Paints & Coatings Nanocomposites GlassTextiles Nanopigments
  • 13. 13 OPPORTUNITIES: ORGANIC NANOMATERIALS Problem • Carotenoides form coarse crystals that are – insoluble in water – sensitive to light and air Solution • Formation of nanoscaled micronizates • Stabilization by properly selected protective colloid ββ-Carotene-Carotene Protective colloidProtective colloid Nanoparticles, water dispersibleNanoparticles, water dispersible 250 nm250 nm250 nm250 nm
  • 14. 14 OPPORTUNITIES: INORGANIC NANOMATERIALS
  • 15. OPPORTUNITIES: NANOBIOMATERIALS Bones Cartilage Teeth Targeted drug delivery
  • 16. DELIVERABLES & CHALLENGES Nanoencapsulation of drugs & their delivery Homogeneous blending Non-agglomerated dispersions AREAS Biosensors Health care Nanocolorants Automobiles Deliverables NANOTECHNOLOGY Challenges Uniform spreadability Targetted drug delivery & Controlled drug release Enhanced sensitivity Greater strength & durability Fabrication Cosmetics Better UV protection Stability & dispersion Electronics Enhanced performance Electromagnetic behaviour
  • 17. Process of making Nanomaterials Process steps Inputs Macro Micro Nano CHALLENGES: PROCESS TECHNOLOGY Challenge: To have a process that can convert macro materials into nano materials spontaneously & with minimum efforts Energy Bulk Sugar cube Nano Dissolved sugar/salt Bulk Salt Output
  • 18. Manufacturing Nanomaterials CHALLENGE: MANUFACTURE Input Process Output Suitable Raw materials Technology Material for desired application Challenges : • Identification and selection of suitable raw materials • Scale up of process of making nanomaterials
  • 19. CHALLENGE:DISPOSAL OF NANOMATERIALS Nanomaterials are supposed to be hyperactive materials In contact with living systems, they are expected to react Cannot be disposed off like other materials Challenges :  Disposal ways  Understanding of Toxicity  Complete dossier of their degradability, etc. without any effect on the environment
  • 20. POTENTIAL MARKET FOR NANOTECHNOLOGY Nanoscience Nanotechnology
  • 21. FUTURE OF NANOTECHNOLOGY Structure sizes 2040 year1960 1980 2020 0.1 nm 0.1 µm 0.1 mm Nano Micro Macro Integrated use of biological principles, physical laws and chemical know-howComplex chemistry Electrical engin. Electronics Micro-electronics Material design Supramolecular chemistry Quantum effects Cell biology Molecular biology Functional molecule design Applications of nano- technology bottom upbottom up  top down top down  Chemistry Coatings, cleaning agents, composite materials, textiles, cosmetics, displays Physics Biology 2000
  • 22. THANK YOU