Figure 1: Side-view diagram of the investigated 1D metasurface.
From: Material-assisted metamaterial: a new dimension to create functional metamaterial

The width of Au wire is denoted by WAu. The incident angle is θin. (b–g) Are the SEM images of Au nanorod, and the WAu are 1.5 μm, 2 μm, 2.5 μm, 3 μm, 3.5 μm, and 4 μm, respectively. The scale bar of the SEM pictures are all fixed to be 4 μm.