Fig. 8
From: Magnetic excitation of a granular gas as a bulk thermostat
Calculated motions of ten particles in cases A (without magnetic interactions) and B (with magnetic interactions). a The particles are placed initially as aligned in a straight line at the sample cell corner and are attracted toward the corner by the external magnetic field in b case A and c case B. The particle chain is formed in case B due to magnetic dipole moment interactions, as shown in d the schematic
