Gecko-inspired but chemically switched friction and adhesion on nanofibrillar surfaces

Shuanhong Ma; Daoai Wang; Yongmin Liang; Baoquan Sun; Stanislav N Gorb; Feng Zhou

doi:10.1002/smll.201402484

Gecko-inspired but chemically switched friction and adhesion on nanofibrillar surfaces

Small. 2015 Mar;11(9-10):1131-7. doi: 10.1002/smll.201402484. Epub 2014 Oct 20.

Authors

Shuanhong Ma¹, Daoai Wang, Yongmin Liang, Baoquan Sun, Stanislav N Gorb, Feng Zhou

Affiliation

¹ State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; University of the Chinese Academy of Sciences, Beijing, 100049, China.

PMID: 25331382
DOI: 10.1002/smll.201402484

Abstract

Chemically switched friction nano-fibrillar surfaces (SiNWAs-PSPMA & SiNWAs-PMAA arrays) can be constructed by finely decorating ordered Si nanowire arrays with responsive polymer brushes. As expected, these surfaces sense humidity or pH smartly and show reversible friction switching, based on swelling and shrinking of the polymer brushes, which is successfully monitored by AFM in liquid media.

Keywords: adhesion; friction; gecko-inspired; nanofibril arrays; polymer brushes; switches.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adhesiveness
Animals
Biomimetic Materials / chemistry*
Electrolytes
Friction
Humidity
Hydrogen-Ion Concentration
Lizards
Metal Nanoparticles / chemistry
Microscopy, Atomic Force
Nanofibers / chemistry
Nanotechnology / methods*
Nanowires
Polymers / chemistry
Silicon / chemistry
Surface Properties

Substances

Electrolytes
Polymers
Silicon