Direct Fabrication of Robust Flexible Electronics Via Laser Shock Imprinting

Abstract Flexible electronics are pivotal for next‐generation technologies, yet their advancement is hindered by fabrication complexities, substrate limitations, and transfer‐reduced performance degradation. Herein, an innovative in situ transfer printing method integrated with Laser Shock Imprinting (LSI) is reported to directly synthesize laser‐induced graphene (LIG) on PET substrates. By using polyether sulfone (PES) as a dual‐functional medium—serving as both a binder for coal particles and a shock pressure generator via thermal decomposition—this approach enables simultaneous in situ graphenization of coal and PES and shock‐driven embedding of the produced graphene into softened PET. Moreover, PES‐derived LIG bridges graphenized coal particles, forming a seamlessly interconnected conductive network. The resulting flexible electrodes exhibit excellent conductivity (15 Ω □ −1 ), superior electromechanical performance (response/recovery times: 40/50 ms; GF = 516), and 3D customizability via PET's thermoplasticity‐an achievement unattainable with PI‐supported LIG or traditional transfer methods. Accordingly, the flexible electrode successfully demonstrates potential applications in motion monitoring, multidirectional strain sensing, and human‐computer interaction. This one‐step, transfer‐free method overcomes traditional limitations of complex procedures and resulting mechanical mismatches, providing a new strategy for synthesizing advanced flexible electronics.