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Active Ag/Co Composite Chiral Nanohole Arrays by Hoang Mai Luong; Minh Thien Pham; Tho Duc Nguyen; Yiping Zhao is a Materials Science article available to read on EtoBox.

What is Active Ag/Co Composite Chiral Nanohole Arrays about?

The magneto-chiroptical properties of Ag/Co composite chiral nanohole arrays (CCNAs) are investigated. The intrinsic circular dichroism of CCNA samples was induced by inplane symmetry breaking by a glancing angle deposition method, and it can be enhanced strongly by surface plasmon resonance when Ag is a major component. On the other hand, the Co component allows for magnetic tuning circular dichroism, with the maximum modulation amplitude up to 0.35°. Remarkably, the enhanced local electric field induced by Wood's anomalies gives rise to sharper and stronger magnetic circular dichroism (normalized for the same Co content) of samples with high Ag concentration. The result demonstrates the possibility of fabricating large-scale active chiroptical metasurfaces using CCNAs, which is promising for imaging and sensing applications.

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Author

Hoang Mai Luong; Minh Thien Pham; Tho Duc Nguyen; Yiping Zhao

Publisher

American Chemical Society (ACS)

Published

2020

Language

EN

Field

Materials Science (Physical Sciences)