Controllable optical activity of gold nanorod and chiral quantum dot assemblies

Abstract

The optical coupling between Au nanorods (Au NRs) and chiral quantum dots (QDs) in assemblies is investigated by both experiment and theoretical calculations. The coupled optical activity in the visible-light region can be manipulated by changing either the aspect ratio of Au NRs or the size of QDs (left).

Keywords: chirality; gold nanorods; optical activity; quantum dots; surface plasmon resonance.