Atoms in a material are rarely still. They jiggle back and forth in collective lattice vibrations known as phonons. Their motion can also carry a rotational element: In 2023, scientists at PSI experimentally proved the existence of chiral phonons, which exhibit handedness depending on which way...

Source: [Phys.org](https://phys.org/news/2026-09-reversible-electric-persistent-chiral-phonon.html)

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