Android science is a new branch for studying human and robot interaction based on the premise that a very humanlike robot (that is, an android) can produce human-directed social responses in human beings.
The android's ability to produce human-directed social responses enables researchers to employ an android in experiments with human participants as it can be more precisely controlled than a human actor.
Nanorobotics is the technology of creating robots close to the scale of nanometres or a robot which allows precision interactions with nanoscale objects.
Nanomachines are largely in the research but some molecular machines have been tested. An example is a sensor having a switch approximately 1.5 nanometers across, capable of counting specific molecules in a chemical sample.