Novel Microstructures Inspired by Sarracenia Trichome and Crassula Muscosa and their Enhanced Unidirectional Liquid Diffusion Properties

The directed self‐propelled motion of liquid droplets is a phenomenon observed in nature, holding significant potential for various engineering applications, including flow control, water harvesting, lubrication, condensation, and heat exchange. Drawing inspiration from the microstructures of Sarracenia trichomes and Crassula muscosa, we propose a novel bioinspired functional surface structure. This design features high‐ and low‐ribbed microchannels with ratchet‐like arrays, effectively overcoming limitations imposed by contact angle hysteresis and static friction in liquid‐solid interactions. The asymmetric ratchet‐like configuration minimizes adhesion resistance in the forward direction while enhancing liquid transport velocity within the microchannels. This enables ultrafast directional liquid transport across surfaces and interfaces without requiring external driving forces. The proposed structure demonstrates promising applications in microfluidic systems, biomedicine, microelectronic control, and efficient liquid transport and collection.