Ag Nanoparticle-Modified Silver Nanorods for Surface Enhanced Raman Scattering

In recent years, surface-enhanced Raman scattering (SERS) technology has been very popular in some fields. The key point is to prepare active substrates. In our paper, rhodamine 6G was detected with silver nanorod arrays (AgNR), silver sols (AgNP), and Ag nanoparticle-modified silver nanorods(AgNP@AgNR). The detection limits of AgNR, AgNP, and AgNP@AgNR were detected as 1.0 ×10^-7 M, 1.0 ×10^-6 M and 5.0 ×10^-8 M. At the same time, the same trace of R6G was detected with three types of substrates and found that the SERS signal acquired from the AgNP@AgNR is the strongest.