Figure 3. Snapshots from videos taken of the EGaIn erasure process using DI water and a saline solution.

(a) Snapshots using DI water taken from Supplementary Video 1. The time interval between each snapshot is ~3 seconds. (b) Snapshots using a 0.001 g/ml NaCl solution taken from Supplementary Video 2. The time interval between each snapshot is ~350 milliseconds. In both cases, the anode was placed in the middle of the liquid metal film and the cathode was placed at the periphery of the film in the aqueous solution.