Figure 1. Capillary-force-induced cold welding of AgNWs. (a) Schematic of moisture treatment for capillary-force-induced cold welding of AgNWs.(b) Schematic of the mechanism of capillary interaction between two particles connected with a liquid bridge. (c,d/e,f) Two sets of SEM images ofAg wire−wire junctions before and after moisture treatment. The thickness (t) of the top nanowire is significantly smaller than the original diameter(d) due to welding. Scale bar: 200 nm. (g) SEM image of a relatively large area of AgNWs showing well welded wire−wire junctions and relativelysmooth surface caused by the moisture treatment. Scale bar: 1 μm.