Plasmonic crystals from 1D to 3D fabricated by focused ion beam milling

We show the fabrication of plasmonic crystals from 1D to 3D using focused ion beam milling. As typical examples, 1D gratings with uniform profiles, 2D nanoholes/nanorings and 3D nanostructures with complex geometries are demonstrated, respectively. Our approach may find useful applications in plasmon-related nanophotonics and optics.

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