Compounding functional nanoparticles with highly conductive and porous carbon scaffolds is crucial for various functional devices. This paper introduces a "popcorn-making-mimic" strategy using a laser-assisted method to create a graphene@NiFe₂O₄ composite film. This approach prevents structural disintegration and mass loss during laser treatment, resulting in a highly integrated composite with superior electrical conductivity and high saturated magnetization. The resulting film demonstrates exceptional EMI shielding effectiveness (up to 20906 dB cm²/g), high absorption rate (75%), flexibility, and reliability. This method offers a new paradigm for fabricating advanced composite materials.
