So how does all of this work? Properly, that is nonetheless one thing of an open query. A part of the issue lies in with the ability to distinguish between uncooked supplies — particular person atoms or molecules — and the nanomachines which are manipulating them. That is as a result of the machines are themselves made up of atoms and molecules that work together with the supplies very in another way than one thing on the macroscale like a robotic arm. Nanomachines cannot grip and raise and push in the identical manner because of the highly effective results of electrochemistry at that scale.
Nevertheless, these hurdles also can present new alternatives. For instance, Cas9 is an enzyme able to following directions to chop a strand of DNA in a selected place. Scientists have discovered learn how to use this pure nanomachine to exactly restore broken DNA. This demonstrates that, at the least in precept, atoms and molecules may be organized in equivalent to manner as to behave like controllable machines on the nanoscale. And if one nanomachine can exist, so can others.
An essential space of curiosity is self-replicating nanobots. The purpose of those machines can be to construct extra copies of themselves. A single nanobot manipulating one atom at a time would take unpractically lengthy to assemble something sizable, however a single nanobot that might make a replica of itself in an hour would wind up with over 16 million copies of itself after a day because of exponential progress, and these machines may then work collectively to assemble bigger merchandise in much less time. That is the hope, anyway.