(Nat. Commun.) Visible and Infrared Three-Wavelength Modulated Multi-Directional Actuators
writer：Zuo, B.; Wang, M.; Lin, B.; Yang, H.*
keywords：liquid crystal elastomer
source：期刊
specific source：Nature Communications, 2019, 10, 4539.
Issue time：2019年
In
recent years, light-guided robotic soft actuators have attracted intense
scientific attention and rapidly developed, although it still remains challenging
to precisely and reversibly modulate the moving directions and shape morphing
modes of soft actuators with ease of stimulating operation. Here we report a
strategy of building a multi-stimuli-responsive liquid crystal elastomer soft
actuator system capable of performing not only multi-directional moving, but
also different shape morphing modes. This strategy is based on the selective
stimulation of specific domains of the hierarchical structured actuator through
the modulation of three wavelength bands (520, 808, 980 nm) of light stimulus, which
release the actuation system from light scanning position/direction restriction.
Three near-infrared dual-wavelength modulated actuators and one visible/infrared
tri-wavelength modulated multi-directional walker robot are demonstrated in
this work. These devices have broad application prospects in robotic and
biomimetic technology.