SHRIRAM INSTITUTE FOR INDUSTRIAL RESEARCH
19, UNIVERSITY ROAD, DELHI-110 007
Dr. R. K. KHANDAL
DIRECTOR
NANOTECHNOLOGY:
SC...
 Scope of nanotechnology
 Definition
 Need
 Dimensions
 Domain
 Features
 Challenges of nanotechnology
 Process te...
 Nanomaterials:
Materials consisting of particles of the size of
nanometer
Volume= Surface area x thickness
 For a given...
Systems Need
Emulsion Macro Micro
Dispersion Coarse Fine
Solution Colloid Solubilization
Scope: Need
Need to create the d...
SCOPE : DIMENSIONS
What Happens Dimensions
 Particle size More from less
Surface area Enhanced coverage
 Activity Novel...
SCOPE : DOMAIN
Keywords Domain
Particle size Distribution in the
continuous phase
Modification of surfaces Interfacial ten...
Scope: Features
Size- dependent properties
As the scale goes down, the activity rises mainly due to the lowering distances...
Process of making Nanomaterials
Process steps Inputs
Macro
Micro
Nano
Challenges: Process Technology
Challenge: To have a ...
Manufacturing Nanomaterials
Challenge: Manufacture
Input
Process
Output
Suitable Raw
materials
Technology
Material for des...
Challenge: Disposal
Nanomaterials are supposed to be hyperactive
materials
In contact with living systems, they are expect...
Opportunities: Nanomaterials for Industries
NANOPARTICLE
Electronics
Multiuse
Chemical
Industries
Defence
OpticsCosmetics
...
Potential applications of Nanomaterials
13
Nanomaterials: Organic (Carotenoids)
Problem
• Carotenoides form coarse
crystals that are
– insoluble in water
– sensit...
14
Nanomaterials: Inorganic
Nanomaterials: Organic (Colorants)
MACRO NANONANO MACRO
 Nano colorants exhibit better solubilization and dispersion
DYES...
Nano-Structured Colorants
ORGANIC DYE
INORGANIC
PARTICLES
Paints & Coatings
Nanocomposites
GlassTextiles
Nanopigments
Bio-nanomaterials
Bones
Cartilage
Teeth
Targeted drug delivery
MACRO
MICRO
NANO
DNA Sequencing: macro to micro to nano
FUTURE OF NANOTECHNOLOGY
Structure
sizes
2040 year1960 1980 2020
0.1 nm
0.1 µm
0.1 mm
Nano
Micro
Macro
Integrated
use of
b...
THANK YOU
of 20

Nano du 200808

Published on: Mar 3, 2016
Published in: Education      Technology      Business      
Source: www.slideshare.net


Transcripts - Nano du 200808

  • 1. SHRIRAM INSTITUTE FOR INDUSTRIAL RESEARCH 19, UNIVERSITY ROAD, DELHI-110 007 Dr. R. K. KHANDAL DIRECTOR NANOTECHNOLOGY: SCOPE, CHALLENGES & OPPORTUNITIES
  • 2.  Scope of nanotechnology  Definition  Need  Dimensions  Domain  Features  Challenges of nanotechnology  Process technology  Manufacture  Disposal  Opportunities for nanotechnology  Industries  Teaching  Science & Technology  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 bulk  Extraordinary activity Scope: Definition
  • 4. Systems Need Emulsion Macro Micro Dispersion Coarse Fine Solution Colloid Solubilization Scope: Need Need to create the disperse phase as continuous and as fine as possible for homogeneity with the dispersing phase
  • 5. 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 input  Effecting changes through and at atomic scale
  • 6. SCOPE : DOMAIN Keywords Domain Particle size Distribution in the continuous phase Modification of surfaces Interfacial tensions Surface Interface Rising volume fraction Homogeneity of phases of dispersing phase  Domain of Nanotechnology  Liquid : Liquid  Gas : Liquid  Solid : Liquid  Gas : Solid  Surfaces and interfaces involving different phases
  • 7. Scope: Features Size- dependent properties As the scale goes down, the activity rises mainly due to the lowering distances at which the interparticle interactions occur leading to evolution of energy. Emulsion High surface energy, Non-homogeneous unstable Thermodynamically Extremely High 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. 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
  • 9. 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
  • 10. Challenge: Disposal 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
  • 11. 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.
  • 12. Potential applications of Nanomaterials
  • 13. 13 Nanomaterials: Organic (Carotenoids) 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 Nanomaterials: Inorganic
  • 15. Nanomaterials: Organic (Colorants) MACRO NANONANO MACRO  Nano colorants exhibit better solubilization and dispersion DYES PIGMENTS
  • 16. Nano-Structured Colorants ORGANIC DYE INORGANIC PARTICLES Paints & Coatings Nanocomposites GlassTextiles Nanopigments
  • 17. Bio-nanomaterials Bones Cartilage Teeth Targeted drug delivery
  • 18. MACRO MICRO NANO DNA Sequencing: macro to micro to nano
  • 19. 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
  • 20. THANK YOU