Gecko-inspired composite micro-pillars with both robust adhesion and enhanced dry self-cleaning property  

作　　者：Xiaoxiao Dong Hong Zhao Zhihang Wang Miray Ouzounian Travis Shihao Hu Yongjian Guo Lipeng Zhang Quan Xu 

机构地区：[1]College of Mechanical and Transportation Engineering,China University of Petroleum-Beijing,Beijing 102249,China [2]Department of Mechanical Engineering,California State University,Los Angeles,CA 90032,United States [3]Energy College,Beijing University of Chemical Technology,Beijing 100029,China

出　　处：《Chinese Chemical Letters》2019年第12期2333-2337,共5页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos.51575528,51875577,51704243);Beijing Nova Program (No.Z171100001117058);Tribology Science Fund of State Key Laboratory of Tribology (No.SKLTKF16A06);Science Foundation of China University of Petroleum (No.2462019QNXZ02)

摘　　要：Self-cleaning surfaces are desirable in many engineering applications where low energy consumption,reusability and sustainability are of the biggest concerns.Inspired by the gecko’s unique ’dry selfcleaning’ hierarchical structures.Here we fabricated artificial Fe304/PDMS composites that show robust self-cleaning capabilities.The enhanced adhesion performance is attributable to the decrease of PDMS polymerization degree and the load transfer between PDMS matrix and Fe304 magnetic particles.The self-cleaning surfaces showed up to 24.3% self-cleaning rate with as few as 4 steps.Simulation result indicated that the changing of cross linking between Fe304 and PDMS is the main reason for the enhanced self-cleaning surfaces.This work reveals an alternative route of making high-performance self-cleaning smart surfaces that are applicable in the textile industry,robotic locomotion/gripping technology,outerspace explorations and tissue engineering.Self-cleaning surfaces are desirable in many engineering applications where low energy consumption,reusability and sustainability are of the biggest concerns.Inspired by the gecko’s unique ’dry selfcleaning’ hierarchical structures.Here we fabricated artificial Fe304/PDMS composites that show robust self-cleaning capabilities.The enhanced adhesion performance is attributable to the decrease of PDMS polymerization degree and the load transfer between PDMS matrix and Fe304 magnetic particles.The self-cleaning surfaces showed up to 24.3% self-cleaning rate with as few as 4 steps.Simulation result indicated that the changing of cross linking between Fe304 and PDMS is the main reason for the enhanced self-cleaning surfaces.This work reveals an alternative route of making high-performance self-cleaning smart surfaces that are applicable in the textile industry,robotic locomotion/gripping technology,outerspace explorations and tissue engineering.

关 键 词：Geock Dry adhesion SELF-CLEANING PDMS FE3O4 Composites 

分 类 号：TB332[一般工业技术—材料科学与工程]