Nanotechnology Flashcards
What is nanotechnology used for?
Developing sports equipment/medical applications
What are these particles measured in?
Nanometres (nm)
How big is 1 nm?
0.000 000 001m (1 billionth of a metre)
Nanotechnology is concerned with the use and control of structures that are how big?
1-100 nanometres in size
Where do nanoparticles occur naturally?
In volcanic ash
How do nanoparticles accidentally occur?
During the combustion of fuels
How do many nanoparticles occur?
By design
Nanoparticles have “…” surface area to volume than larger particles
More
How are nanoparticles used in sports equipment?
Added to materials to make them stronger whilst often being lighter. They have been used in tennis rackets, golf clubs and shoes
How are nanoparticles used in clothing?
Silver nanoparticles have been added to socks. This stops them from absorbing the smell of sweaty feet as the nanoparticles have antibacterial properties
How are nanoparticles used in healthcare?
In sunscreens. They offer protection and can be rubbed in so there are no white marks.
What are the concerns of nanoparticles?
May be toxic to people/may be able to enter the brain from the bloodstream and cause harm
