Nanotechnology

Nanotechnology

1. Definition

   • Nanotechnology is a new branch of science that refers to structures built from a few hundred atoms and are 1-100nm big. They show different properties to the same materials in bulk, partly because they also have a large surface area to volume ratio and their properties could lead to new developments in computers, building materials
   • They are formed by a number of methods
     • Occur naturally in the sea
     • Formed during combustion
     • Formed by grinding down materials

2. Nanoscience and health

   • Nanoparticles are obviously very small and have a large surface area to volume ratio. This makes them useful but can also make them dangerous. Nanoparticles could easily pass through cell membrane

3. Two examples of nanotechnology

   • The 'Nano Carbon Pro' tennis racket uses nanoparticles to increase its strenght
   • Silver nanoparticles can be used to give fibres antibacterial properties