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(A) Schematic of printing high-resolution liquid metal patterns on a prestretched substrate with a shadow mask and then releasing the stretched substrate. Photographs of the printed interdigitated electrode patterns (B) before and (C) after the release of the stretched substrate. Photographs of the printed serpentine line patterns (D) before and (E) after release of the stretched substrate. (F,G) Optical microscopic images of the printed serpentine line patterns.
