Fig. 1: Schematic illustration of overall fabrication processes.

a The Cu powders were first coated with sucrose as a hybrid precursor. b The hybrid precursor was then subjected to RTA process for growing GLNs. c The GLNs were interconnected into a continuous network structure in the Cu matrix by using hot-pressing. d The fully-densified 3D-GLNN/Cu bulk composites were fabricated by hot-rolling.