Abstract
Chiral plasmonic systems have been shown to exhibit stronger circular dichroism (CD) because of strong interaction between light and noble metals. In this study, we utilize double-layer chiral plasmonic nanostructures composed of achiral nanoplate and two achiral nanodisks to produce a chiroptical response. The chiroptical response is due to the twisted electric dipoles and the phase between them. In addition, the CD signal of the plasmonic nanostructure can be accurately regulated when plasmonic nanostructure parameters are tuned. Overall, results will allow further tuning of the optical responses in plasmonic systems to tailor chiral light–matter interaction.
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