Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Nanorobotics is an engineering discipline concerned with designing and building nanorobots, devices ranging in size from 0.1–10 micrometers and constructed of nanoscale or molecular components. Nanomachines are largely in the research-and-development phase, but some primitive molecular machines have been tested. The first useful applications of nanomachines might be in medical technology, which could be used to identify and destroy cancer cells. Another potential application is the detection of toxic chemicals, and the measurement of their concentrations, in the environment. Learn more about nanorobotics, its current achievements and future possibilities in this book.