Nanotechnology have Several Advantage in Electronics And IT application and Medical and health care application to combat several deseases and scientific research organisation, transportation.
By using nanotechnology human life will change dramatically in near future.
But Using Nanotechnology in wrong way can lead to Destruction of human beings in near future and that is the main concern of this topic.
Many Super Power countries already invested Billion of dollers for uses Nanotechnology to make nanobot which can be used in war as Nano weopons. These are very very small in size, like a Insect and we can not detect them easily.They can fly and they can go any where they want and they can carry massive explosive item to explode anything like big building,
car, railway station, airport , metro station.
According To scientist using nanotechnology we can make A 5 Pounds of explosive with capacity 100Ton of TNT.
Many countries try to make mini nuke bomb for future war.These mini- nuke bomb is some thing like Thermo nuclear fusion bomb use tritium deuterium fuel explode when we trigger them with Nano laser.
The mini nuke bomb is not very difficult to make like big nuklear bomb.
This nanobot can be programmed such that they can do task like poisioning people, contaminating food and water supply.
They can be used to spread desease by spreading viruses.
Though we are very far from this type of Nano bot and mini nuke bomb but when this become a Reality and if this technology will go to Terrorist hand then our future is not very safe.
More Information:
Source: http://www.cnbc.com/2017/03/17/mini-nukes-and-inspect-bot-weapons-being-primed-for-future-warfare.html