Femtosecond Laser Ultrafast Atomic Scale Renovating Laser‐Induced Graphene

Abstract Renovation technology for laser‐induced graphene (LIG) is critical for customizing and expanding its applications. However, existing renovation technology for LIG has been rarely reported and are constrained by the limitations such as poor precision, variable heal parameters, and lack of multifunctionality. Herein, the first time a simple and efficient femtosecond laser method is introduced for atomic scale renovation LIG (FLR‐LIG). The ultrafast and efficient thermal conversion of femtosecond laser pulses by LIG triggers the rearrangement of carbon atoms to heal defects. Raman spectroscopy, atomic‐resolution images, and density functional theory calculations demonstrate that femtosecond laser…

• NN
  National Natural Science Foundation of China

  Awards: 52075557, 52475499, 52222513
• NS
  Natural Science Foundation of Hunan Province

  Awards: 2024JJ5426, 2025JJ30016
• NK
  National Key Research and Development Program of China

  Award: 2023YFB4604200
• FR
  Fundamental Research Funds for Central Universities of the Central South University

  Awards: 2024ZZTS0736, 2025ZZTS0096