Publication

3D-porous conductive carbon nanofibers (CNFs) have great potential for wearable bioelectronics and humanmachine interfaces, yet 90% of CNFs are derived from expensive polyacrylonitrile (PAN) associated with complex production methods [2]. Herein, we newly developed laser-carbonized MXene reinforced fluoropolymer, poly(1,1-difluoroethylene) (PDFE) fibers-based skin patch for long-term biopotentials monitoring. The impregnation of Ti3C2Tx-MXene followed by dehydrofluorination is also crucial to enhance the β-phase and reinforce PDFE-based nanofibers. The fabricated nanofibers exhibited a high carbon yield (54.77%), conductivity (sheet resistance = 4 Ω sq-1), and stability. A skin-compatible breathable and reusable tattoo type patch was fabricated by the single-step LIC techniques for monitoring long-term biopotentials. It exhibited a high breathability (~14 mg cm−2 h−1) formed compliant contact with human skin, resulting in low electrode-skin impedance (23.59 kΩ cm2 at 10 Hz) and low-noise biopotential signals (signal-to-noise ratio, SNR = 41 dB).