Our idea of nanotechnology started with the dream of K. Eric Drexler in the '80s, who had to prove his idea to skeptics who believed it would never happen. The technology must be anywhere from one nanometer (one billionth of a meter) to 100 nanometers long. Scientists are focusing not on creating invidually operating nanobots but on machines made of millions of nanobots.
Scientists have divided nanotechnology into 4 generations. The first, which we are still on, is to create devices that do one specific task. The second generation can multitask. Scientists are just now entering the second phase.
Some day in the future, nanobots could be used for medicine, electricity, or even advanced weapons. This could even cure cancer. What other uses could this have?
Sources:http://nanotechnology.com/
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