But is it usable?
At this point, its a toy, kind of like the itty-bitty motor they made.
You make these things by moving atoms around. Unless they make some form
of lithography to generate the "chip" it would take years to make just a single
chip of any serious power. The other problem is you still have to deal with the
interference factors if the atoms are too close. The tunneling problems if the
wires are too thin, etc.
The next "REAL" advance I see is some form of 3d Lithography that will allow more
efficient circuits be built in a cube form vs the almost 100% flat form we have now.