Study on Direct Writing of Gallium Metal for the Flexible Sensor

There is an urgent need for a simple and effective method to manufacture flexible sensors composed of liquid metal. Gallium (Ga) metal has become ideal conductive material due its high conductivity, low melting point, flow characteristics. In this paper, Ga directly written on the polyvinyl alcohol (PVA) film through driving mode piston extrusion; then, wire transferred sealed with silica gel. The advantages are studied, direct writing parameters metal, including extrusion speed, nozzle height, printing inner diameter, systematically optimized. sensor based good resilience under external load. This work provides specific reference sealing technology sensor.