Examples of plasmonic NPs with different shapes. (A) 2D Triangle.115 (B) 2D Truncated triangle.115 (C) 3D Decahedron.115 (D) Hexagonal bipyramidal polygon.115 (E) Cube.116 (F) Nanocage.117 (G) Nanoskeleton.118 (H) Tetrapod.119 (I) Star shape.120 (J) Octapod.121 (K) Nanobelt. (L) Nanorod.122 (M) Rod-shape GNT.12 (N) Spherical colloid.115 Figures were adapted with permission from: (A) – (D), (N), ref 115 copyright 2010 Royal Society of Chemistry; (E), (F), (M), refs 116,117,12 respectively, copyright 2007, 2009, 2009 respectively Nature Publishing Group; (G), (I), refs 118,120 respectively, copyright 2009, 2008 respectively Wiley; (H), (J), (K), refs 119,121,117 respectively, copyright 2008, 2002, 2008 respectively American Chemical Society.