| 초록 |
We fabricated changable magnetic nanopatterns from monolayer films of diblock copolymer micelles containing FeCl3, combining with oxygen plasma treatment as an etching process. Monolayer films of PS-P4VP diblock copolymer micelles with FeCl3 in the P4VP core were simply spin-coated on silicon wafers from their toluene solution, which showed a pseudo-hexagonal nanostructure. Subsequently, the monolayer film of micelles was treated with O2 plasma to remove organic copolymers and oxidize FeCl3, resulting in a pseudo-hexagonal magnetic nanopattern of iron oxides on the silicon substrate. In addition, we were able to fabricate a phase-inverted magnetic nanopattern, i.e., iron oxides with a pseudo-hexagonal array of nanoholes, by simple dipping of FeCl3-loaded micellar films in ethanol before O2 plasma treatment. We characterized the fabricated nanopatterns by TEM, FE-SEM, and AFM, and their magnetic properties by AGM. |
