Tunable Optical Metamaterial Enables Steganography, Rewriting, and Multilevel Information Storage.

ABSTRACT: In the realm of secure information storage, optical encryption has emerged as a vital technique, particularly with the miniaturization of encryption devices. However, many existing systems lack the necessary reconfigurability and dynamic functionality. This study presents a novel approach through the development of dynamic optical-to-chemical energy conversion metamaterials, which enable enhanced steganography and multilevel information storage. We introduce a micro-dynamic multiple encryption device that leverages programmable optical properties in coumarin-based metamaterials, achieved through a direct laser writing grayscale gradient strategy. This methodology allows for the dynamic regulation of photoluminescent characteristics and cross-linking networks, facilitating innovative stegan

SUBMITTER: Zheng J 

PROVIDER: S-EPMC12413373 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature