Figure 6

Schematic of liquid alloy printing of electrical circuitry on coated paper.

Liquid metal (A) is firstly printed on paper (Step 1); Then RTV silicone rubber (B) is overprinted sequentially as encapsulated material (Step 2); When necessary, a multilayer circuit structure is fabricated by printing liquid metal (A) circuitry bypassing the upper surface of cured silicone rubber (Step 3).