Fig. 12 SEM images showing the different zones of the heated electrodes in the TWAS process. (a) Traces of solidified liquid metal
flow, (b) solidified metal droplets, (c) solidified crust of metal liquid, (d) holes indicating bubbling effect of boiling metal, (e) Doughy
metal (erupted magma) building the extruded metal sheet, and (f) deformed wire tip