Optical Imaging of Magnetic Particle Cluster Oscillation and Rotation in Glycerol. - River Gassen; Dennis Thompkins; Austin Routt; Philippe Jones; Meghan Smith; William Thompson; Paul Couture; Dmytro A. Bozhko; Zbigniew Celinski; Robert E. Camley; Guy M. Hagen; Kathrin Spendier (J. Imaging, 2021)