Light plays a central role in modern technology, from fiber-optic communication to medical imaging, laser-based manufacturing, and quantum computing. Yet, despite its versatility, the tools we use to control light are often bulky, rigid, and limited to a fixed function. Traditional optical devices — lenses, mirrors, waveguides — are designed for specific tasks and cannot easily adapt or respond to changing conditions.
The METAmorphoses project was launched to address this limitation by pioneering a new class of optical devices called metasurfaces: ultra-thin, nano-engineered surfaces that can sculpt the flow of light with extreme precision. But more than that, the project asked a bold question: What if these metasurfaces could change over time — adapting their function, reacting to light itself, and even restructuring autonomously?
To realize this vision, the project brought together expertise in nanophotonics, advanced materials, and ultrafast optics. A key focus was the development of photo-responsive materials, including smart polymers and layered crystals, that can reshape their optical properties when illuminated. These were combined with novel optical designs to create metasurfaces that are not only compact and efficient, but also dynamically reconfigurable.
One of the project’s major achievements was the development of self-structuring metasurfaces using azopolymer films — materials that can be rewritten, erased, or re-patterned using light alone. Another breakthrough was the generation of structured light pulses carrying orbital angular momentum that evolves over time, offering new possibilities in high-speed optical communication and particle manipulation. The team also discovered MoOCl2, a new layered material capable of guiding light at the nanoscale with hyperbolic behavior — a property useful for next-generation imaging and sensing technologies.
By the end of the project, METAmorphoses had successfully delivered a series of innovations that push the boundaries of what light-based devices can do. These results lay the groundwork for adaptive optical systems that are flat, compact, and capable of tasks once thought impossible without complex hardware or electronics.
From a societal perspective, the ability to control light more precisely and flexibly has far-reaching implications. It can improve the energy efficiency of optical systems, enhance the resolution of microscopes, increase data transmission in communications, and open new pathways in quantum technologies. By making light a more programmable and responsive tool, METAmorphoses contributes to the future of smarter, faster, and more sustainable photonic systems.
