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Updated: Mar 26, 2026
Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
Published on: December 24, 2014
Photothermally actuated interfacial hydration for fast friction switch on hydrophilic polymer brush modified PDMS
Guoqiang Liu1, Meirong Cai2, Yange Feng1
1State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China. wangxl@licp.cas.cn zhouf@licp.cas.cn and University of Chinese Academy of Sciences, Beijing, 100039, China.
Abstract:
A near-infrared light triggered fast interfacial friction switch was achieved with polyelectrolyte brush grafted PDMS embedded with Fe3O4 nanoparticles, where the in situ heating up of the photothermal Fe3O4 nanoparticles in the polymer matrix changes the interface humidity and thereafter alters the hydration level of the interfacial polymer brushes.
