Sound wave control/ filtration unlocks potential for faster, clearer wireless communication and quantum information processing

https://penntoday.upenn.edu/news/picking-acoustic-signals-through-better-filtration

"isolate important signals from noise/ interference... pushed Klein tunneling to GHz range... etched piezoelectric aluminum nitride membranes convert electrical signals into mechanical and vice-versa...  transmission-mode microwave impedance microscopy visualizes wave movement... waves transmit through energy barriers without loss... controlling angle at which waves entered these phononic crystals...  more users connecting simultaneously... wireless communication, medical imaging, quantum computing"