Scientists led by the Universitat Politècnica de Barcelona and the ESRF, the European Synchrotron, have revealed the chemical reactions in nanoparticles that created a unique, shimmering effect in the painting on ninth-century Islamic ceramics. The results are published in Science Advances.

Source: [Phys.org](https://phys.org/news/2026-09-unveiling-nanoparticles-iridescence-ancient-ceramics.html)

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