English: Supplementary Movie 3 Contact charge electrophoretic particle oscillations. A granular chain composed of 100 μm stainless steel particles is assembled in silicone oil, and then the electric voltage is turned off to enable fracturing of the chain. Once the voltage is turned on again, the fractured chain reconnects. At high frequencies of the electric voltage (above ~100 Hz), the entire chain moves back towards the electrode. For lower frequencies, particles may experience an oscillating motion due to the contact charge electrophoresis. This effect is demonstrated here at frequencies 1 Hz and 1 mHz.