“…There are many possible variations of the form factors of plasmonic structures designed to enhance the absorption of optical radiation in their adjacent materials by LSPR. To date, the effectiveness of spheres [ 14 ], ordered nanodiscs [ 15 ], PbS [ 16 ] and Ag [ 17 ] quantum dots, nanocubes [ 18 ], spherical dimers, nanostars, nanorods [ 14 ], grid arrays [ 19 ], and complex-shaped structures [ 20 ] has been demonstrated. However, only asymmetric nanostructures can have optical anisotropy, which significantly narrows their list of possible forms.…”