Femtosecond Laser Enables Graphene Nanoprocessing at Light-Speed

Researchers at Tohoku University have used a femtosecond laser to micro/nanofabricate graphene films, creating multi-point holes without damage and removing contaminants. The technique could replace traditional, more complex methods, offering potential advancements in quantum materials research and biosensor development. By forming nanopores and atomic-level defects in graphene, not only can electrical conductivity be controlled but also quantum-level characteristics such as spin and valley. The team aims to establish a cleaning technique using the laser and carry a detailed investigation into how to conduct atomic defect formation.