Microwave spectroscopy of magnons, phonons and magnon-polarons as a function of magnetic field (x-axis) and frequency (y-axis). Data has been recorded with a vector network analyser. The horizontal ...

Acoustic frequency filters, which convert electrical signals into miniaturized sound waves, separate the different frequency bands for mobile communications, Wi-Fi, and GPS in smartphones. Physicists ...

Acoustic frequency filters help smartphones separate signals for mobile networks, Wi-Fi, and GPS. Researchers at RPTU Kaiserslautern-Landau now say they have demonstrated a new physical effect that ...

Acoustic waves are usually thought of as purely longitudinal, moving back and forth in the direction the wave is travelling and having no intrinsic rotation, therefore no spin (spin‑0). Recent work ...