[CTuP8B] 2D Materials in Nanophotonics and Non-Hermitian Nanophotonics

[CTuP8B-03] Multi-level anti-counterfeiting based on covert structural features embedded in a fs-laser-treated gold/graphene layer

*Shiru Jiang^1,2, Su-Han Kim², Chul-Soon Park², Woo-Bin Lee^1,2, Sang-Shin Lee^1,2 (1. Department of Electronic Engineering, Kwangwoon University (Korea), 2. Nano Device Application Center, Kwangwoon University (Korea))

[Presentation Style] Onsite

A gold/graphene hybrid layer works as triple-level anti-counterfeiting after femtosecond laser irradiation. The presence of graphene enables key structural information related to anti-counterfeiting signatures to be covert thoroughly under the surface of the hybrid layer.