Using spin-sound waves to separate frequency bands for smartphone, Wi-Fi, GPS and sound-based microwave component acoustic frequency filters

https://phys.org/news/2025-11-physicists-generate-hybrid-options-6g.html

"strong coupling between miniaturized surface acoustic waves/ yttrium iron garnet's lattice atomic acoustic waves, results in nanoscale hybrid GHz spin-sound waves... leads to magnon-polaron hybrid excitations... combines pillars of microwave technology: acoustic filters/ ferrimagnetic insulators... quantitative understanding and control over this spin-sound coupling offers pathway for developing agile frequency filters that can be adjusted during operation, a key innovation for upcoming 6G mobile communications"