Write about Nanotechnology; what is it?, where it can be used?

Write about Nanotechnology; what is it?, where it can be used? is it disruptive? why?
– Focus both on first and second order consequences of the impact of the technology.
– Outline both intended positive impacts and possible unintended and indirect negative impacts (and their impacts).

* Tips:
https://www.asme.org/engineering-topics/articles/nanotechnology/greener-aerospace-with-nanotechnology

http://www.sciencedump.com/content/10-awesome-facts-about-nanotechnology