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Nanotechnology.

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detect protein imbalances that point to cancer. Gold nanoshells' to treat tumours: ... IBM's Millipede memory device: microscopic data storage chip. Nanotechnology. ... – PowerPoint PPT presentation

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Title: Nanotechnology.


1
Nanotechnology.
Introduction
  • What is it?
  • What are the risks?
  • What are the uses?

2
Nanotechnology.
What nanotechnology is
  • Nano billionth of something.
  • Creating and changing.
  • Pushing the limits.

3
Nanotechnology.
Risks of nanotechnology
  • Can cause serious damage.
  • 3 reasons
  • More reactive
  • Can accumulate
  • Lack of knowledge
  • Company policy.
  • Lack of leadership and organisation.

4
Nanotechnology.
Uses of nanotechnology
  • Health
  • - Detecting curing cancer
  • Computers
  • - nano-sizing microchips for data storage
  • Electricity
  • - cheap solar panels
  • Construction
  • - ultra light and ultra strong materials

5
Nanotechnology.
- Nanotechnology in health
  • Nano-sized protein detectors
  • detect protein imbalances that point to cancer
  • Gold nanoshells to treat tumours
  • harmless nanoparticles which kill tissue
  • around them when heating up under IR light

6
Nanotechnology.
- Nanotechnology in computers
  • IBMs Millipede memory device
  • microscopic data storage chip

7
Nanotechnology.
- Nanotechnology in electricity
  • Solar panels
  • - simply painting nanocrystals on metal foil
  • - nanocrystals can be grown very cheaply
  • - very flexible solar panels

8
Nanotechnology.
- Nanotechnology in construction
  • Incredibly strong and light materials
  • Carbon nanotubes
  • - can carry more than a million times their own
    weight
  • - very light 100 g of it can cover about 1/2
    hectare

9
Nanotechnology.
Discussion questions
  • Do you think the usefulness of nanotechnology
  • outweigh the risks, or vice versa?
  • Do you think that products that already use
  • nanotechnology are safe? Would you use
  • them?
  • Do you know any products that already use
  • nano-sized particles?

10
Nanotechnology.
Gap exercises
1. Research can ____________ (seemingly
contradictory) add to the problem. 2.
Nanomaterials also offer huge ________
(possibilities) for making better batteries,
generating green energy and producing clean
water. 3. Moreover, _______ (even though there
have been) hundreds of years of experience in
chemistry, it is not easy to predict how a
substance will behave when it is made extremely
small. 4. These particles can also be __________
(designed and constructed) into shapes that
provide some functional property, like _______
(stiffness).
paradoxically
potential
despite
engineered
rigidity
11
Nanotechnology.
Gap exercises
5. At such small sizes, silver can have
____________ (germ-killing) properties. 6. The
European Commission concluded that each new
material should be _________ (evaluated) on a
case by case basis. 7. Some ________ (taking
small quantities for tests) of ________ (floating
in the air) particles is done, but it is still
not clear what should be _________ (kept under
surveillance).
antimicrobial
assessed
airborne
sampling
monitored
12
Nanotechnology.
Translation exercises
1. Many products are now embedded with silver
nanoparticles. 2. At the moment, firms with
product-liability insurance are implicitly
insured for their nanoparticles. 3. There was a
pressing need for a strategic programme of
spending. 4. Nanoparticulate versions of a
material can act in novel ways. 5. Titanium
dioxide is commonly used as the white pigment in
sunscreen.
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