Abstract

Multilayered vertically aligned gold nanorod (AuNR) arrays are synthesized through a self-assembly process. Coupling of the localized surface plasmon resonances of AuNRs upon resonant excitation enables highly localized electromagnetic fields along the long axis of the AuNR when illuminated. Vertical alignment allows for the formation of larger “hot volumes” where many more analyte molecules can benefit from the field enhancement as compared to conventional SERS sensors. In this paper, we will demonstrate the use of plasmonic array sensors for the detection of cannabinoids.

© 2022 The Author(s)