Scientists successfully filmed sound waves in a diamond crystal structure for the first time ever using an X-ray free-electron laser (XFEL).

The interface between two facets of an artificial material known as a “Weyl phononic crystal” can not only negatively refract an airborne sound wave, it does so without reflecting it at all. This ...

Scientists used sound waves to study the effects of stress on the quantum behavior of defects inside silicon carbide crystals. Photo by Andrew Silver/BYU Mineral Specimens 799 USGS Photographic ...

But at cryogenic temperatures, where many quantum technologies operate, sound waves in pristine crystals such as silicon, quartz, and sapphire can last much longer. The new study, led by assistant ...