To conclude, nanotechnologies are a real progress since a few years. In fact, those advanced technologies are an enormous evolution in lots of sectors like medicine, informatics, textile and in cosmetics compared to others technologies.

 

For example: There are better, they have news chemicals properties and there are more efficient but there are more expensive.

Furthermore, the key feature of nanotechnologies is the ratio of exchanging surface is much bigger than micro technologies which upgrade the efficiency of their actions: it means that we can, for the same weight, have more ability to do something.

Moreover, it exists that some nanoparticles can have secondary bad effects: they can affect human health and the nature. (a plan is attached at the bottom of the page)

 

And researchers have barely began to probe risks of nanoparticles. To continue, the potential damage of nanoparticles could take several years to repair. (a plan is attached at the bottom of the page)

 

Then, there are many associations against the problem about risks of nanoparticles like PMO (Piece et Main d’Oeuvre or AGOE (Action Group On Erotion) are an ecologist organizations. To finish, there was a manifestation in MINATEC who is a European center focused on micro and nanotechnologies in Grenoble, on 2nd-3rd June in 2006 against risks of nanoparticles.