Affiliation:
1. School of Mechanical Engineering Jiangsu Key Laboratory for Design and Manufacture of Micro‐Nano Biomedical Instruments Southeast University Nanjing 211189 China
2. Department of Chemical and Materials Engineering University of Alberta Edmonton AB T6G 1H9 Canada
3. School of Materials Science and Engineering Jiangsu Key Laboratory of Construction Materials Southeast University Nanjing 211189 China
Abstract
AbstractIntact advanced lubricating coatings can rival natural hydration lubricating systems. However, once damaged, their lubricity is drastically diminished as the delaminated coating materials are either unable to re‐bond to the original substrate due to the irreversible bond breakage or easily bridge the opposing rubbing surface via non‐specific interactions. Inspired by the reversibility and selectivity of dynamic click chemistry, super‐lubricating surfaces with targeted self‐repairability are developed through a surface‐recognized strategy. The rubbing surfaces exhibit superlubricity with friction coefficient µ ≈0.002 at physiologically high pressure (≈7.5 MPa). When wear‐induced coating‐substrate breakage occurs, the lubricating materials can target and reassociate with their pairing surfaces through specific dynamic covalent linkages, circumventing surface bridging, and recovering high lubricity even upon repeated damage. This study offers an innovative paradigm for developing durable lubricating surfaces with bespoke reparability for biomedical applications.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Jiangsu Province
Subject
Electrochemistry,Condensed Matter Physics,Biomaterials,Electronic, Optical and Magnetic Materials
Cited by
3 articles.
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