Title: Nanotechnology.
1Nanotechnology.
Introduction
- What is it?
- What are the risks?
- What are the uses?
2Nanotechnology.
What nanotechnology is
- Nano billionth of something.
- Creating and changing.
- Pushing the limits.
3Nanotechnology.
Risks of nanotechnology
- Can cause serious damage.
- More reactive
- Can accumulate
- Lack of knowledge
- Lack of leadership and organisation.
4Nanotechnology.
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
5Nanotechnology.
- 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
6Nanotechnology.
- Nanotechnology in computers
- IBMs Millipede memory device
- microscopic data storage chip
7Nanotechnology.
- Nanotechnology in electricity
- Solar panels
- - simply painting nanocrystals on metal foil
- - nanocrystals can be grown very cheaply
- - very flexible solar panels
8Nanotechnology.
- 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
9Nanotechnology.
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?
10Nanotechnology.
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
11Nanotechnology.
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
12Nanotechnology.
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.