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MITS GWALIOR
• SUBMITTED BY -RISHABH RANA
• SUBMITTED TO - SAANJEEV KHANNA
SUBJECT –NANOTECHNOLOGY
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The Answer:
Nanotechnology
makes it
Possible!!
4
Nanometer (nm) = one billionth of a
meter
Definition of “Nano”:
One billionth (10x-9)
/Nanotechnology is the understanding and control of
matter at the nanoscale, at dimensions between
approximately 1 and 100 nanometers, where unique
phenomena enable novel applications.
Scientific Terms:
A human hair is 10,000 nm wide
5
Definition “Nanotechnology”:
A field of applied science
focused on design,
formation, identification
and application of
materials and devices on
the nanoscale.
History of the
“NANOTECHNOLOGY”
6
• The concepts that seeded nanotechnology were first
discussed in 1959 by renowned physicist Richard
Feynman in his talk There's Plenty of Room at the Bottom,
in which he described the possibility of synthesis via direct
manipulation of atoms.
• The term "nano-technology" was first used by Norio
Taniguchi in 1974, though it was not widely known.
Inspired by Feynman's concepts, K. Eric Drexler used
the term
7
• In the early 2000s, the field garnered increased
scientific, political, and commercial attention that led
to both controversy and progress. Controversies
emerged regarding the definitions and potential
implications of nanotechnologies, exemplified by
the Royal Society's report on
nanotechnology.[17] Challenges were raised regarding
the feasibility of applications envisioned by advocates
of molecular nanotechnology, which culminated in a
public debate between Drexler and Smalley in 2001
and 2003.[18]
8
FUTURE OF NANOTECHNOLOGY
9
Scientists currently debate the
future implications of nanotechnology.
Nanotechnology may be able to create
many new materials and devices with
a vast range of applications, such as
in nanomedicine, nanoelectronics, bio
materials energy production, and
consumer products.
10
Two Methods of Making Nanoparticles
“Top Down”
Cut object
smaller and
smaller until
attain size
needed.
“Bottom Up”
Add atoms
together one by
one to attain
correct
property.
Vs.
Dimensionality in
nanomaterial
Nanomaterials can be classified in 0D, 1D, 2D and
3D nanomaterials. The dimensionality play a major role in
determining the characteristic of nanomaterials
including physical, chemical and biological characteristics.
With the decrease in dimensionality, an increase in
surface-to-volume ratio is observed. This indicate that
smaller dimensional nanomaterials have higher surface
area compared to 3D nanomaterials. Recently, two
dimensional (2D) nanomaterials are extensively
investigated for electronic, biomedical, drug
delivery and biosensor
applications.
11
12
Properties That Change at a
Nanometer Scale:
•Thermal – melting temperatures
•Mechanical – adhesion (stickiness)
•Electrical – current
•Optical* - prisms
Health and environmental concerns
A video on the health and safety implications of
nanotechnology
Main articles: Health and safety hazards of
nanomaterials and Pollution from nanomaterials
Nanofibers are used in several areas and in different
products, in everything from aircraft wings to tennis
rackets. Inhaling airborne nanoparticles and nanofibers
may lead to a number of pulmonary diseases,
e.g. fibrosis.[89] Researchers have found that when rats
breathed in nanoparticles, the particles settled in the
brain and lungs, which led to significant increases in
biomarkers for inflammation and stress response[90] and
that nanoparticles induce skin aging through oxidative
stress in hairless mice.[91][92]
13
Nanotechnology is the engineering of functional
systems at the molecular scale. This covers
both current work and concepts that are more
advanced. In its original sense, nanotechnology
refers to the projected ability to construct items
from the bottom up, using techniques and tools
being developed today to make complete, high-
performance products.
14
Fundamental
concepts
15
Imagine a soldier that has a uniform
that can change from desert, to
winter, to forest camouflage by using
current from a small battery to
rearrange alignment of the molecules!
16
Jobs Technology
n
17

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nanotechnology.ppt

  • 1. MITS GWALIOR • SUBMITTED BY -RISHABH RANA • SUBMITTED TO - SAANJEEV KHANNA SUBJECT –NANOTECHNOLOGY 1
  • 2. 2
  • 4. 4 Nanometer (nm) = one billionth of a meter Definition of “Nano”: One billionth (10x-9) /Nanotechnology is the understanding and control of matter at the nanoscale, at dimensions between approximately 1 and 100 nanometers, where unique phenomena enable novel applications. Scientific Terms: A human hair is 10,000 nm wide
  • 5. 5 Definition “Nanotechnology”: A field of applied science focused on design, formation, identification and application of materials and devices on the nanoscale.
  • 7. • The concepts that seeded nanotechnology were first discussed in 1959 by renowned physicist Richard Feynman in his talk There's Plenty of Room at the Bottom, in which he described the possibility of synthesis via direct manipulation of atoms. • The term "nano-technology" was first used by Norio Taniguchi in 1974, though it was not widely known. Inspired by Feynman's concepts, K. Eric Drexler used the term 7
  • 8. • In the early 2000s, the field garnered increased scientific, political, and commercial attention that led to both controversy and progress. Controversies emerged regarding the definitions and potential implications of nanotechnologies, exemplified by the Royal Society's report on nanotechnology.[17] Challenges were raised regarding the feasibility of applications envisioned by advocates of molecular nanotechnology, which culminated in a public debate between Drexler and Smalley in 2001 and 2003.[18] 8
  • 9. FUTURE OF NANOTECHNOLOGY 9 Scientists currently debate the future implications of nanotechnology. Nanotechnology may be able to create many new materials and devices with a vast range of applications, such as in nanomedicine, nanoelectronics, bio materials energy production, and consumer products.
  • 10. 10 Two Methods of Making Nanoparticles “Top Down” Cut object smaller and smaller until attain size needed. “Bottom Up” Add atoms together one by one to attain correct property. Vs.
  • 11. Dimensionality in nanomaterial Nanomaterials can be classified in 0D, 1D, 2D and 3D nanomaterials. The dimensionality play a major role in determining the characteristic of nanomaterials including physical, chemical and biological characteristics. With the decrease in dimensionality, an increase in surface-to-volume ratio is observed. This indicate that smaller dimensional nanomaterials have higher surface area compared to 3D nanomaterials. Recently, two dimensional (2D) nanomaterials are extensively investigated for electronic, biomedical, drug delivery and biosensor applications. 11
  • 12. 12 Properties That Change at a Nanometer Scale: •Thermal – melting temperatures •Mechanical – adhesion (stickiness) •Electrical – current •Optical* - prisms
  • 13. Health and environmental concerns A video on the health and safety implications of nanotechnology Main articles: Health and safety hazards of nanomaterials and Pollution from nanomaterials Nanofibers are used in several areas and in different products, in everything from aircraft wings to tennis rackets. Inhaling airborne nanoparticles and nanofibers may lead to a number of pulmonary diseases, e.g. fibrosis.[89] Researchers have found that when rats breathed in nanoparticles, the particles settled in the brain and lungs, which led to significant increases in biomarkers for inflammation and stress response[90] and that nanoparticles induce skin aging through oxidative stress in hairless mice.[91][92] 13
  • 14. Nanotechnology is the engineering of functional systems at the molecular scale. This covers both current work and concepts that are more advanced. In its original sense, nanotechnology refers to the projected ability to construct items from the bottom up, using techniques and tools being developed today to make complete, high- performance products. 14 Fundamental concepts
  • 15. 15 Imagine a soldier that has a uniform that can change from desert, to winter, to forest camouflage by using current from a small battery to rearrange alignment of the molecules!
  • 17. 17