Capillary bridges in wet granular sphere pack (by S. Weis)

A video of tomographic data of a real experimental wet sphere pack.
The video, data and analysis stem from Dr Simon Weis’ graduate research, published in his thesis “Structural analysis of particulate systems using X-ray tomography” in 2018.

Experimental details: 2.1 % (by volume) bromodecane was mixed into an amorphous packing of spheres. Using X-ray tomography we can visualize the formation of capillary bridges between the spheres.

Experimental details:Rendering based on an X-ray tomography of a wet sphere packing. Shown are all capillary bridges (blue) around the central sphere (red) and the spheres connected via the capillary bridges (yellow). If the red sphere is in physical contact to the yellow sphere, the liquid cluster appears as a torus (due to the finite resolution). Liquid bridges between spheres which are close but not in contact appear as a blue cluster without hole.

Details:  https://arxiv.org/abs/1808.04342)

Copyright (both videos): Simon Weis