TITLE:
Enhanced Circular Dichroism of Z-Shaped Nanorod in Rectangular Nanohole Arrays
AUTHORS:
Ziye Zhang
KEYWORDS:
Absorption Circular Dichroism, Surface Plasmon, Chiral Nanostructure
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.11 No.9,
September
28,
2023
ABSTRACT: Chiral nanostructures have attracted much attention due to the valuable applications in biochemistry, medicine industries, and photonic devices. In this study, we propose an ease-of-fabrication planar nanostructure that consists of rectangular nanohole arrays in which the Z-shaped nanorod is arranged. Theoretically, such chiral nanostructure supports significant absorption circular dichroism (CD) compared with the Z-shaped nanorod because charge distributions are tuned after the introduction of the rectangular frame. Meanwhile, the Z-shaped nanorod directs the flow of current on the rectangular frame, thereby generating the effective quadruple electron oscillation in the Z-shaped nanorod. A novel mode also emerges when an identical Z-shaped nanorod is added into the rectangular hole. The studies will provide a novel approach to enhance the CD effect of planar structures.