DataVXAdvanced MaterialsPaper
journal article·2023-06

Bio‐Inspired Active Self‐Cleaning Surfaces via Filament‐Like Sweepers Array

Qingshan Wu, Hao Yan, Lie Chen, Shuanhu Qi, Tianyi Zhao, Lei Jiang, Mingjie Liu

Advanced Materials· Volume 35· Issue 25
Publisher page
Source abstract

Abstract

Abstract Hydrodynamic forces from moving fluids can be utilized to remove contaminants which is an ideal fouling‐release strategy for underwater surfaces. However, the hydrodynamic forces in the viscous sublayer are greatly reduced owing to the no‐slip condition, which restricts their practical applications. Here, inspired by sweeper tentacles of corals, an active self‐cleaning surface with flexible filament‐like sweepers are reported. The sweepers can penetrate the viscous sublayer by utilizing energy from outer turbulent flows and remove contaminants with adhesion strength of >30 kPa. Under an oscillating flow, the removal rate of the single sweeper can reach up to 99.5% due to dynamic buckling movements. In addition, the sweepers array can completely clean its coverage area within 10 s through coordinated movements as symplectic waves. The active self‐cleaning surface depends on the fluid‐structure coupling between sweepers and flows, which breaks the concept of conventional self‐cleaning.
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Research context

OpenAlex topics: Surface Modification and Superhydrophobicity · Polymer Surface Interaction Studies · Adhesion, Friction, and Surface Interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Bio‐Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry Beihang University Beijing 100191 P. R. China

Nerve‐Machine Integration and Cognitive Competition Center Beijing Machine and Equipment institute Beijing 100854 P. R. China

CAS Key Laboratory of Bio‐inspired Materials and Interfacial Science CAS Center for Excellence in Nanoscience Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China

Beijing Advanced Innovation Center for Biomedical Engineering Beihang University Beijing 100191 P. R. China

International Research Institute for Multidisciplinary Science Beihang University Beijing 100191 P. R. China

Funding

National Natural Science Foundation of China

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