期刊
MATERIALS HORIZONS
卷 8, 期 3, 页码 728-757出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0mh01406k
关键词
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资金
- National Natural Science Foundation of China [51973155, 51773147]
- State Key Program of National Natural Science Foundation of China [51633007]
- National Key R&D Program of China [2016YFA0202302]
Soft robots that mimic living organisms and can adapt to their environment are gaining attention due to advances in material flexibility, human-friendly interaction, and biological adaptation. Light-driven actuators based on responsive soft materials are seen as promising for untethered soft robotics, with researchers focusing on photomechanics, photoswitching, bioinspired design, and actuation realization. This review discusses recent advances in light-driven bimorph soft actuators, highlighting the integration of photoactive and passive layers to endow soft actuators with new features like sensitivity, programmability, compatibility, robustness, and controllability.
Soft robots that can move like living organisms and adapt to their surroundings are currently in the limelight from fundamental studies to technological applications, due to their advances in material flexibility, human-friendly interaction, and biological adaptation that surpass conventional rigid machines. Light-fueled smart actuators based on responsive soft materials are considered to be one of the most promising candidates to promote the field of untethered soft robotics, thereby attracting considerable attention amongst materials scientists and microroboticists to investigate photomechanics, photoswitch, bioinspired design, and actuation realization. In this review, we discuss the recent state-of-the-art advances in light-driven bimorph soft actuators, with the focus on bilayer strategy, i.e., integration between photoactive and passive layers within a single material system. Bilayer structures can endow soft actuators with unprecedented features such as ultrasensitivity, programmability, superior compatibility, robustness, and sophistication in controllability. We begin with an explanation about the working principle of bimorph soft actuators and introduction of a synthesis pathway toward light-responsive materials for soft robotics. Then, photothermal and photochemical bimorph soft actuators are sequentially introduced, with an emphasis on the design strategy, actuation performance, underlying mechanism, and emerging applications. Finally, this review is concluded with a perspective on the existing challenges and future opportunities in this nascent research Frontier.
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