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Polyelectrolyte Multilayer Films for Building Energetic Walking Devices
Author(s) -
Ma Ying,
Zhang Yuanyuan,
Wu Baisheng,
Sun Weipeng,
Li Zhengguang,
Sun Junqi
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201101054
Subject(s) - polyelectrolyte , allylamine , relative humidity , actuator , substrate (aquarium) , acrylic acid , alternation (linguistics) , computer science , hydrochloride , materials science , composite material , chemistry , polymer , physics , artificial intelligence , thermodynamics , organic chemistry , philosophy , linguistics , oceanography , geology , monomer
Fast and powerful : A polyelectrolyte multilayer film was used to fabricate a humidity‐responsive actuator that can drive a walking device carrying a load 120 times heavier than the actuator to walk steadily on a ratchet substrate under periodic alternation of the relative humidity (RH) between 11 and 40 % (see picture). NOA 63: Norland Optical Adhesive 63, PAA: poly(acrylic acid), PAH: poly(allylamine hydrochloride).