I want to know how far current nanotechnology is from creating an actual real-world nanorobot? Also, does such a thing actually exist, or is it just a nice name for an umbrella term to show off to the general public different fields of science and engineering which might not be actually linked?
P.S. I understand that the term nanorobot may be taken into consideration because it may mean different things to different people, that's why when I use it I mean something bigger than a molecule but smaller than a biological cell which could replicate and do some "stuff" like the things described in Eric Drexler's book Engines of Creation or in foresight's institute nanotechnology roadmap. I guess they will be somewhat the size of biological organelles and just like them be composed of various molecular complexes some capable of self assembly. I want to know what is the current state of research into the creation of such structures and how far are we from building them.
P. S. 2. And, please, guys can you not use only Wikipedia for your answers. I want to know what serious research is being done and where it's published in, not just a general introduction to the field. I'll be very thankful if you could provide some sound material published in peer reviewed journals or at least a list of keywords I could use for searching for articles related to the creation of real nanorobots or a list of journals where such research can be found. If you could do at least that you will have my gratitude.