Since the emergence of nanotechnology in the 80s, block copolymers are frequently used to design "preforms" to control the structure of inorganic nanoparticles. MANIOC's philosophy is based on the opposite reasoning. It consists in manipulating the microstructure of triblock copolymers by selectively adsorbing their ends on the surface of “stimulable” and “guidable” magnetic particles. The experimental process, allowing the design of non-equilibrium microstructures on demand, can be summarized in three steps: