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POSTECH's Metasurface Merges Color Printing and Holography

POSTECH researchers develop a single-layer metasurface that combines triple-color printing under white light and high-efficiency holography, enabling advanced optical security and information storage.

This innovation matters because it demonstrates a practical way to integrate multiple optical functions into a single, ultrathin device, which could revolutionize security features in currency, documents, and products. By combining color printing and holography, it enables more complex and difficult-to-forge anti-counterfeiting measures, enhancing protection against fraud. Additionally, the high efficiency and broadband operation suggest potential for compact displays and augmented reality systems, making advanced optical technologies more accessible and versatile.