Fig. 2From: Direct Visualization of Wavelength-Dependent Single Dipoles Generated on Single Gold Nanourchins with Sharp Branchesa DF scattering image of 90 nm AuNUs deposited on a glass slide. b Single particle scattering spectrum of AuNU1 highlighted with a red square in a. A single LSPR peak was observed around 650 nm for the AuNU1. The yellow-dotted lines indicate the incident LSPR wavelengths (600 nm, 640 nm, 700 nm) used in this studyBack to article page