Laser Fabrication of Multi‐Dimensional Perovskite Patterns with Intelligent Anti‐Counterfeiting Applications (Adv. Sci. 42/2024)

Femtosecond Laser Direct Writing of Perovskites By utilizing femtosecond laser direct writing, various perovskite micro and nanostructures can be engraved. These structures, when viewed from a distance, resemble a city, with internal units composed of 3D, quasi‐2D, and 2D perovskite. Combined with AI elements (in the top left corner), this laser writting technology enables intelligent recognition and enhances anti‐counterfeiting security. More details can be found in article number 2309862 by Benli Yu, Siqi Li, and co‐workers. [Image: see text]