Bioinspired Unidirectional Liquid Transport Micro-nano Structures:A Review  

作　　者：Liwen Zhang Guang Liu Huawei Chen Xiaolin Liu Tong Ran Yi Zhang Yang Gan Deyuan Zhang 

机构地区：[1]School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China [2]Beijing Advanced Innovation Center for Biomedical Engineering,Beihang University,Beijing 100191,China

出　　处：《Journal of Bionic Engineering》2021年第1期1-29,共29页仿生工程学报（英文版）

基　　金：the National Key R&D Program of China(No.2019YFB1309702);the National Natural Science Foundation of China(Nos.51935001,51725501 and 51905022).

摘　　要：Unidirectional liquid transport without any need of external energy has drawn worldwide attention for its potential applications in various fields such as microfluidics,biomedicine and mechanical engineering.In nature,numerous creatures have evolved such extraordinary unidirectional liquid transport ability such as spider sik,Sarracenia's trichomes,and Nepenthes alata's peristome,etc.This review summarizes the current progresses of natural unidirectional liquid transport on 1-Dimensional(1D)linear structure and 2-Dimensional(2D)surface stucture.The driving force of unidirectional liquid transport which is determined by unique structure exist distinct differences in physics.The fundamental understanding of 1D and 2D unidirectionaliquid transport especially about hierarchical structural characteristics and their transport mechanism were concentrated,and various bioinspired fabrication methods are also introduced.The applications of bioinspired directional liquid transport are demonstrated especially in fields of microfluidies,biomedical devices and anti-icing surfaces.With newly developed smart materials,various liquid transport regulation strategies are also summarized for the control of transport speed,direction guiding,etc.Finally,we provide new insights and future perspectives of the directional transport materials.

关 键 词：bioinspiration unidirectional liquid transport microfluidics smart materials Nepenthes alata Sarracenia trichomes 

分 类 号：Q81[生物学—生物工程]