It refers to hypothetical nanotechnology engineering discipline of designing and constructing nanorobots of size ranging from 0.1-10 µm. A nanorobot is an extremely small robot designed to perform a specific task with precision at nano-scale. They are also known as nanorobots or nanoids. The design of nanorobot is derived from biological models of bacteria. Carbon will likely be the principle element used in construction of nanorobot and comprised probably in the form of diamond/ diamondoid (includes pure diamond and crystalline allotrope of carbon) or fullerence nanocomposites. A nanorobot can be made of mechanical parts such as bearing, gears, motors etc. The outer shell of nanorobot is likely to be constructed using diamondoid material due to their inert properties, high thermal conductivity and strength. The super-smooth surfaces could reduce the chances of triggering the body’s immune system. The nanoscale gears and other components designed for special purposes could be constructed using elements like hydrogen, sulfur, oxygen, nitrogen, silicon etc [3].