Tag Archives: granular matter
Pulses in a vertical granular column
We investigated the dynamics of a vertical column of 12 beads submitted to a series of taps. Impulses are strong enough to eject beads. The motion of the beads are recorded using a high-speed camera. Depending on the frequency of taps, … Continue reading
3d printing revolution in the lab
Recent articles [1-3] emphasized the interest of 3d printing for scientists. In addition to pedagogical activities, during which students experience 3d models, scientific research can benefit a lot from such a technique. Scientists may build complex structures and may dream … Continue reading
Building sandcastles grain by grain
From sugar poured into a bowl to tons of grains discharge processes in industry, a peculiar feature of granular materials emerges : the formation of a pile. When the grains are not cohesive, only the friction and the grain geometry … Continue reading
Cascade of granular flows
Granular segregation [1] is of practical importance in applications ranging from the pharmaceutical industry to chemistry. In many cases, the segregation degrades the quality of the final product or causes safety problems. In order to avoid segregation, two methods could … Continue reading
Wet sand flows better than dry sand
As any child knows, the best way to build a sandcastle is to use wet sand. Wet grains stick together due to capillary forces [1]. A castle made from dry sand will collapse under its own weight. However, we have demonstrated that, … Continue reading
