Radiative loss-determined circular dichroism of plasmonic nanospirals with bendable stability of chiroptical activity

Abstract

There is a lack of analytical approaches to study chiroptical activity of chiral nanoplasmons. Herein, LC circuit theory is proposed to analyze the chiroptical activity of heterojunction nanospirals, revealing the main contribution to be from radiative loss. Furthermore, chiral nanoplasmonic flexible thin films exhibit excellent mechanical stability of their chiroptical activity, paving the way to develop flexible/wearable optoelectronic devices integrated with chiral nanoplasmonics.