12. NANO DEVICES
•Medical tools
Tablets(PILLS) can be taken that
contain miniature cameras. These
cameras can reach deep parts of the
body and provide high-resolution
pictures of cells as small as 1 μm in
width. (A red blood cell is 7 μm
wide.) This makes them very useful
for diagnosis and also during
surgeries.
13. Why Nanotechnology?
•At nanoscale the physical, chemical, and biological
properties of materials differ in fundamental and valuable
ways from the properties of individual atoms and molecules
or bulk matter.
•Nanotechnology R&D directed toward understanding and
creating improved materials, devices, and systems that
exploit these new properties
14. In other words.....
•Working at the atomic, molecular and
supra-molecular levels, in the length
scale of approximately 1 – 100 nm range,
through the control and manipulation of matter
at the atomic and molecular level in order to
design, create and use materials, devices and
systems with fundamentally new properties and
functions because of their small structure.
Small photonic
crystals: titanium
dioxide micro-
sphere 1-50 mm
in diameter
15. What’s the BIG deal about something so SMALL?
• Materials behave differently at size scale.
• It’s not just about miniaturization.
• At this scale---it’s all about INTERFACES
• Evident Technologies
• EviDot Quantum Dots
• Color depends on particle size
• Quantum dots 3.2 nm in diameter have blue emission
• Quantum dots 5 nm in diameter have red emission
18. Advantages
1.Produces small and faster components.
2. This will also result in computers that consume less energy .
3. High speed and high capacity memory.
4. Allow circuits to be more accurate on the atomic level.
5.In madical field-end of illness (i.e. cancer , heart diseases)
6.Less pollution.
7. Mass production in textile industries
