“…The nanorods can also be replaced by other nanostructures capable of supporting LSPR, such as nanoparticles and nanodisks, while the nanoholes can be round or oval. It has also been shown that the preparation of large-scale complex hole structures, i.e., hole rod, 17,18 hole disk, 28,29 hole particle, 30 and hole grating, 31…”