Heater unit for a self-healing module. A) components for the heater. The heater features the ease of customizing, temperature sensing, and mechanical strength which is indispensable for system integration. B) prototype model.  The diameter is 6 [mm], and the length is 10 [mm]. C) manufacturing process. The SMD resistor and the thermocouple  were combined with the heat-shrinking tube. We used a heating chamber to sinter the ceramic putty which fills the resistor and the thermocouple. We build the heater in a scalable manner, which would be beneficial for prototyping and robot  integration.