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Mini machines

Drexler's tiny robots would be made of cogs and gears, and have little electronic circuits and tools to carry out their jobs. His idea was popular with authors and film-makers. This picture shows one of Drexler's ideas for a nano-sized cog.



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A design for a differential gear for a molecular machine.
A design for a differential gear for a molecular machine.
Image: K Eric Drexler, www.imm.org

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