57321
Descrição
Mapa Mental por jakeogilvie, atualizado more than 1 year ago
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Criado por jakeogilvie
mais de 11 anos atrás
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Nanotechnology
- The use and control of tiny matter
is called nanotechnology. The tiny
matter is referred to as
nanoparticles.
- These particles are measured in nanometres (nm). A
nanometre is one billionth of a metre (0.000 000 001m).
Nanotechnology is concerned with the use an
- and control of structures that are 1-100 nanometres in size.
- and control of structures that are 1-100 nanometres in size.
- Some of these nanoparticles occur naturally,
for example in volcanic ash. Some occur by
accident, for example during the combustion
of fuels. Many occ
- Properties of nanoparticles
- Nanoparticles of a material show different
properties compared to larger particles of
the same material.
- Nanoparticles of a material show different
properties compared to larger particles of
the same material.
- Use of nanoparticles
- sports equipment:
nanoparticles are added to
materials to make them
stronger whilst often being
lighter. They have been used in
tennis rackets,
- clothing: silver nanoparticles have been added to
socks. This stops them from absorbing the smell of
sweaty feet as the nanoparticles have antibacteri
- healthcare: nanoparticles
are used in sunscreens.
They offer protection and
can be rubbed in so there
are no white marks
- Harmful effects
- There are some concerns that
nanoparticles may be toxic to
people. They may be able to
enter the brain from the
bloodstream and cause harm.
- Some people think more
tests should take place
before nanoparticles of a
material are used on a
wider scale.
- There are some concerns that
nanoparticles may be toxic to
people. They may be able to
enter the brain from the
bloodstream and cause harm.
- sports equipment:
nanoparticles are added to
materials to make them
stronger whilst often being
lighter. They have been used in
tennis rackets,
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