The plasmonic properties of composites with controlled AuNP loading are found to be well described by a plasmon ruler equation, and Raman optical tweezer results show the SERS performance in the bulk is dominated by the discrete composite properties.
In this paper, we designed a 2D distance and rotation angle plasmon ruler based on Fano resonance of a trimer nanostructure, which consists of a concentric square nanoring–disk and an outside nanorod (CSRDR).
Validation of the plasmon ruler through small angle X-ray diffraction and optical reflectance of ordered nanoparticle films at the liquid–liquid interface.
Preparation of polymer gold nanoparticle composites with tunable plasmon coupling and their application as SERS substrates