Figure 1. (A) Illustration of the two needle electrodes used in the ex vivo experiment, (B) dimensions of exposed part and (C) in silico numerical setup.

The electrodes were kept 10 mm apart and parallel by two blocks made of acrylic glass. Both electrodes were covered with insulation except at the tip, where 10 mm of the bare electrode was exposed. The electrodes were connected to an electric pulse generator by two connectors (coloured red and black).