Spin‑wave chips cut phone heat

Researchers at KAIST demonstrated magnonic (spin‑wave) signal processing in nano‑devices, using vibrations of magnetization (magnons) instead of electron currents to carry information. The approach reduces heat and power draw while enabling fast frequency switching in the GHz range, and was published in Nature Communications. — If scalable, magnonic chips could shift mobile and edge computing away from electron‑based thermal limits, lowering device energy use and changing hardware supply chains and performance expectations.