A lotus-inspired Janus hybrid film enabled by interfacial self-assembly and in situ asymmetric modification

A lotus leaf inspired Janus hybrid film was exquisitely fabricated through a self-assembly process at the air/water interface with subsequent in situ asymmetric modification at the oil/water interface. The interfacial asymmetric decoration strategy thus provides a novel pathway for achieving a 2D Janus hybrid film with asymmetric wettability and functionality.