Water transport performance of inhomgenous nanoconfined systems

Graphene nanochannels have attracted extensive attention in the fields of physics, biology, mechanics and materials due to their super long slip length unique fluid transport properties. Up now, research on confined liquid carbon-based relies primarily homogeneous nanoconfinement. Here, we investigate behavior water between inhomogeneous graphene channels by means molecular dynamics simulations. Our results show that channel transforms into different lamellar structures areas. With increase density, structure will gradually change from regular square-like solid. Besides, speed decreases first, then increases again with density. This is because under low density (0.8–0.9 g/cm3), interface friction causing decrease. When reaches phase transition (1.0 g/cm3), coefficient reduce sharply. continuing (1.0–1.4 g/cm3), increases, leading drop again. provide theoretical support for understanding state characteristics systems, some guiding significance material biological seawater desalination.