Additive Manufacturing of Strain Insensitive Liquid Metal Polymer Composite
발표자
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초록
내용
Stretchable electronics have made significant advancements and are used in soft robotics, skin electronics, and implantable electronics. However, there are still limitations in the wiring that connects these stretchable devices, maintaining high conductivity and stretchability. Here, we enabled leakage-free additive manufacturing process of liquid metal polymer composites to allow for the mass production of uniform stretchable conductive fibers, and through sonication activation, we imparted high conductivity and strain-insensitive resistance. This was achieved by introducing an excess of bulky ligands to the LMP composite to induce slip on the LMP surface and maximize the stress-relaxation of the polymer. This strategy also conferred high physical stability, preventing LM leakage even under physical damage. Furthermore, the thermal drawing process allowed for the production of very small dimension fibers as well as multi-material fibers, showing potential for use in various stretchable electronics.