Nanotechnology Flashcards
How do we convert nanometres into metres?
Divide by 9
What do we call particles that are between 1-100 nanometres across?
Nanoparticles.
What is nanotechnology?
The making, use and control of nanoparticles
Nanomaterials are…
…materials that have been designed using nanotechnology.
Give the 3 methods by which nanomaterials can be made..
Made by nanotechnology
Made naturally
Made by accident
Give 2 examples of when nanomaterials can be made by accident
Seaspray puts salt particles in atmosphere
Combustion (burning fuels) creates soot particles
When nanoparticles are added to materials it gives them
Different properties
What can nanoparticles do to plastic sports equipment?
Makes the plastic stronger,
more durable
don’t add weight
What is the effect of silver nanoparticles on the polymer fibres of surgical masks?
It gives the fibres antibacterial properties.
Why do silver nanoparticles have better properties than normal silver particles?
They have a larger surface area to volume ratio
What is the main concern about using nanoparticles?
The effect on health
How can peoples fears about nanoparticle effects on health be addressed?
By testing nanoparticles thoroughly before using them
What is the main worry about nanoparticles that are already being used?
Their long term health effects.
What do people feel should be done to products that use nanoparticles already?
They should be clearly labelled.
