"The Doomed Account"
I wasn't aware that nano robotics were possible yet.
yes it still inprogress
Japan is working hard on it
and also on humanoid but they are having too many problems
for now it looks like a science fiction
but the research is still going on
nanobots are just specualtion
HOWEVER i saw this on discovery that we were able to make small bots who would do there work
they r suppose to get in body through blood through injection and after doing work
they were suppose to be flushed within 24 hours(more if transit time is high)