Fig. 3From: Direct Visualization of Wavelength-Dependent Single Dipoles Generated on Single Gold Nanourchins with Sharp Branchesa Normalized DF intensities for AuNU1 at the three different LSPR wavelengths as a function of the rotational angle. b Enlarged SEM image of a single AuNU with a spiky uneven surface. c Schematic diagram showing the generation of single dipoles with different wavelengths in multiple directions on the same AuNU surfaceBack to article page