Figure 14From: Optical interactions in plasmonic nanostructures Gold nanorod heptamers. (a) Schematic showing the splitting of doubly degenerate modes in circular heptamer to azimuthal and radial modes in nanorod heptamer. The white colored arrows represent the radial modes and gold colored arrows represent azimuthal modes. Simulated extinction spectra for (a) azimuthal and (b) radial nanorod heptamers for the same structural parameters: individual nanorods have a length of 95Â nm, width of 50Â nm and thickness of 40Â nm. The center particle has a diameter of 147Â nm and gold thickness of 40Â nm. The gaps between the center particle and the nanorods are 22Â nm. (From Ref. [22]) Gold nanorod heptamers. (a) Schematic showing the splitting of doubly degenerate modes in circular heptamer to azimuthal and radial modes in nanorod heptamer. The white colored arrows represent the radial modes and gold colored arrows represent azimuthal modes. Simulated extinction spectra for (b) azimuthal and (c) radial nanorod heptamers for the same structural parameters: individual nanorods have a length of 95Â nm, width of 50Â nm and thickness of 40Â nm. The center particle has a diameter of 147Â nm and gold thickness of 40Â nm. The gaps between the center particle and the nanorods are 22Â nm (From Ref. [22]).Back to article page