Abstract: In one aspect, the present disclosure relates to an electronic device comprising: a plurality of electronic chip components; a plurality of liquid metal (LM) electrical interconnects coupled to the plurality of electronic chips; and a polyimine film encapsulating the plurality of electronic chip components and the plurality of LM electrical interconnects. In some embodiments, the polyimine film comprises the product of the polymerization reaction between terephthaldehyde, 3,3diamino-N-methyldipropylamine, and tris(2-aminoethyl)amine.

Abstract: The present disclosure provides a high-performance integrated strain sensing device that is highly stretchable, rehealable, recyclable and reconfigurable. This device can include dynamic covalent thermoset polyimine as the substrate and encapsulation, eutectic liquid metal alloy as the strain sensing unit and interconnects, and off-the-shelf chip components for measuring and magnifying functions. The device can be attached on the knee, elbow, wrist and finger joints for strain sensing and motion monitoring, and can also be attached on the abdomen to accurately measure respiration cycles.