Emerging frontiers in two-dimensional sliding ferroelectrics

The emergence of sliding ferroelectricity in 2D van der Waals materials has opened a new paradigm for designing nanoscale nonvolatile memories, where polarization switching is governed by interlayer sliding rather than conventional ion displacement. This perspective highlights materials, strategies, switching dynamics, and device applications of 2D sliding ferroelectric materials. Finally, the critical challenges and future research directions are outlined, aiming to guide the rational design of next-generation sliding ferroelectric materials.