Nanorobotics portrays the innovation of creating machines or robots at the nanoscale. 'Nanobot' is a casual term to allude to built nano machines. In spite of the fact that right now theoretical, Nano robots will progress numerous fields through the control of nano-sized items. Nanorobotics is a rising innovation field making machines or robots whose parts are at or close to the size of a nanometer (10−9 meters). More explicitly, nanorobotics (instead of micro-robotics) alludes to the nanotechnology designing order of planning and building nanorobots, with gadgets extending in size from 0.1–10 micrometers and built of nanoscale or atomic components. Nanomachines are largely in the research and development phase, but some primitive molecular machines and nanomotors have been tested. An example is a sensor having a switch approximately 1.5 nanometers across, able to count specific molecules in a chemical sample.