Fig. 2: SEM images of chiral plasmonic arrays.
From: Chiral plasmonic superlattices from template-assisted assembly of achiral nanoparticles
a Low-magnification SEM image of the resulting 2D triskelia lattice. Insets: Photograph of a representative sample showing diffraction from the 16 mm² patterned area and a schematically representation of the triskelion unit constituted by metal nanospheres. b, f and j corresponds to photographs of each colloid in dispersion used to produce the different nanostructures. SEM images of the chiral arrays produced with (c–e) 27 nm Ag spheres, (g–i) 45 nm Au spheres and (k–m) Au nanorods (60 nm × 15 nm).
