With the help of an ultra-precise X-ray microscope, a German-Polish research team successfully recorded the world’s first video of a space-time crystal. An enigmatic state of matter confirmed to exist only recently, this micrometer-sized specimen was created using magnon quasiparticles at room temperature—another first. The video reveals the atomic oscillations known as ‘ticking’ associated with time crystals as their structures repeat in space and time. “We were able to show that such crystals are much more robust and widespread than first thought,” states Pawel Gruszecki of the Adam Mickiewicz University in Poland. “The potential for communication, radar, or imaging technology is huge,” adds Joachim Gräfe of the Max Planck Institute for Intelligent Systems in Germany.

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