A nanodevice is a device with at least one overall dimension in the nanoscale, or comprising one or more nanoscale components essential to its operation. Nanotechnology is being used in developing countries to help treat disease and prevent health issues. The umbrella term for this kind of nanotechnology is Nanomedicine. Nanotechnology is also being applied too or developed for application to a variety of industrial and purification processes. Nanotechnology is being used in developing countries to help treat disease and prevent health issues. ... In industry, applications may include construction materials, military goods, and nano-machining of nano-wires, nano-rods, few layers of graphene, etc. Nanotechnology is so important because it could have the potential to solve many of humanity's problems. If developed responsibly, nanotechnology could solve problems in the poorest countries of the world as important as diseases, hunger, lack of drinking water and lack of houses.