jsc2023e053547

Granular Sound: open sample cell, completely filled with glass beads. On the left, the bead packing is in direct contact with a voicecoil-driven wall for sound wave excitation, while all other sample cell walls are padded with foam for acoustic decoupling of the glass bead packing. Image courtesy of DLR-MP.

jsc2023e053547 (3/32023) --- Granular Sound: open sample cell, completely filled with glass beads. On the left, the bead packing is in direct contact with a voicecoil-driven wall for sound wave excitation, while all other sample cell walls are padded with foam for acoustic decoupling of the glass bead packing. Image courtesy of DLR-MP.