Many biological surfaces are capable of transporting liquids in a directional manner without energy consumption.Inspired by nature,constructing asymmetric gradient surfaces to achieve desired droplet transport,such as...Many biological surfaces are capable of transporting liquids in a directional manner without energy consumption.Inspired by nature,constructing asymmetric gradient surfaces to achieve desired droplet transport,such as a liquid diode,brings an incredibly valuable and promising area of research with a wide range of applications.Enabled by advances in nano-technology and manufacturing techniques,biomimetics has emerged as a promising avenue for engineering various types of anisotropic material system.Over the past few decades,this approach has yielded significant progressin both fundamental understanding and practical applications.Theoretical studies revealed that the heterogeneous composition and topography mainly govern the wetting mechanisms and dynamics behavior of droplets,including the interdisciplinary aspects of materials,chemistry,and physics.In this review,we provide a concise overview of various biological surfaces that exhibit anisotropic droplet transport.We discussed the theoretical foundations and mechanisms of droplet motion on designed surfaces and reviewed recent research advances in droplet directional transport on designed plane surfaces and Janus membranes.Such liquid-diode materials yield diverse promising applications,involving droplet collection,liquid separation and delivery,functional textiles,and biomedical applications.We also discuss the recent challenges and ongoing approaches to enhance the functionality and application performance of anisotropic materials.展开更多
基金National Natural Scienoe Foundation of China(NSFC)(22105012,21975007,22175007,52172080)Bejing Natural Science Foundation(2232054)+2 种基金National Natural Science Foundation of China for Outstanding Youth Foun-dationFundamental Research Funds for the Central Universities,the National Program for Support of Top notch Young Professionals,the 111 Project(grant no.B14009)the open project of the Key Laboratory of Photochemical Conversion and Optoelectronic Mate rials,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences.
文摘Many biological surfaces are capable of transporting liquids in a directional manner without energy consumption.Inspired by nature,constructing asymmetric gradient surfaces to achieve desired droplet transport,such as a liquid diode,brings an incredibly valuable and promising area of research with a wide range of applications.Enabled by advances in nano-technology and manufacturing techniques,biomimetics has emerged as a promising avenue for engineering various types of anisotropic material system.Over the past few decades,this approach has yielded significant progressin both fundamental understanding and practical applications.Theoretical studies revealed that the heterogeneous composition and topography mainly govern the wetting mechanisms and dynamics behavior of droplets,including the interdisciplinary aspects of materials,chemistry,and physics.In this review,we provide a concise overview of various biological surfaces that exhibit anisotropic droplet transport.We discussed the theoretical foundations and mechanisms of droplet motion on designed surfaces and reviewed recent research advances in droplet directional transport on designed plane surfaces and Janus membranes.Such liquid-diode materials yield diverse promising applications,involving droplet collection,liquid separation and delivery,functional textiles,and biomedical applications.We also discuss the recent challenges and ongoing approaches to enhance the functionality and application performance of anisotropic materials.
