X-rays reveal kingfisher feather structure in unprecedented detail
Summary
Ars Technica covers how high-energy X-ray imaging, including synchrotron techniques, reveals that Qing dynasty kingfisher feathers derive their iridescent colors from a porous, sponge-like nanostructure rather than pigments. The study combines SEM, hyperspectral imaging, XRF, FTIR, and synchrotron imaging to map the nanostructure and materials used in tian-tsui featherwork, highlighting semi-ordered photonic crystals that control light. The findings bridge historical art materials with modern photonics, with implications for conservation and sustainable, dye-free color technologies.