Oxygen‐Mediated Topological Growth of MoS 2 for Symmetry‐Anisotropy Coengineered Ultrafast Electronic Switching

) of up to 10.91. Leveraging this dual symmetry-anisotropy control, an ultrafast square-wave generators are demonstrated with orientation-programmable switching characteristics that achieve only 39 aJ per event energy efficiency. This work provides new insights into symmetry-anisotropy coengineering in 2D materials, providing a novel platform for designing energy-efficient, high-speed switching electronics.