Figure 8
From: Self-propulsion of a grain-filled dimer in a vertically vibrated channel

Comparison of experiments and simulations of the vertical position of each ball, Y s (small-grain-filled ball) vs Y l (large-grain-filled ball) (a–c) Experimental results of TLG mode, TSG mode, and fluctuation mode, respectively. (d–f) Simulations of TLG mode, TSG mode, and fluctuation mode, respectively.