Patterning Magnetic Nanorings in Polymer Films

Demixing leads to surface-oriented phase separation, giving rise to the formation of a double layer consisting of the polymer and the solute. This process can be triggered, for instance, by solvent annealing. The thickness of the layers is determined by the volume ratio of the two phases in the initial blend. When a component of the blend is considerably lesser in percentage, it 

Based on this process the authors used a patterned film of molecular magnets on polycarbonate (PC) in order to confine the ring 

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