The study of robotics and construction at the nanometer scale. The key technology behind this field of engineering is the assembler: a device that can construct structured substances an atom at a time. The assembler builds other machines capable of performing any task for which they are programmed and have the required energy source. The Nanotech engineer is an expert in designing functional structures on the atomic scale, a task requiring strong knowledge of quantum mechanics, chemistry, robotics, and mechanical engineering. He is also familiar with disassembly techniques that methodically take apart a structure and map the location of each atom. Research in this field is heavily regulated due to the extreme danger of lethal technology, and most research is performed in isolated locations such as outer space.