Fig. 1.

Fabrication and characterization of Cu mesh film. a Schematic diagram of the fabrication process for a Cu mesh film. b Digital photograph of a 3 × 2.5 cm² Cu mesh film. c OM image of Cu mesh film. d, e SEM images of the Cu mesh. f Cell size distribution of Cu mesh. The number of statistical cells exceeds 1000. g Thickness distribution of a Cu mesh measured by step profiler