The lower limit is set by the size of atoms (hydrogen has the smallest atoms, which are approximately a quarter of a nm kinetic diameter) since nanotechnology must build its devices from atoms and molecules.
Alxadud wa andarran ijje iddikud n atom tan (hydrogen ila wa andarran hullan daɣ atom tan hin ikkanen achut n aɣil n metir n kinetic diameter) fal as nanotechnology ilzam tat edey n isuj net daɣ atom tan d molecule tan.