材料科学
执行机构
弹性体
光热治疗
近红外光谱
光电子学
制作
光热效应
纳米技术
复合材料
光学
计算机科学
医学
物理
替代医学
病理
人工智能
作者
Xiang Xu,Jiannan Cheng,Haitao Zhao,Weiwei He,Lifen Zhang,Zhenping Cheng
标识
DOI:10.1021/acsami.3c08973
摘要
Soft actuators with photo-response can be selectively driven by the light source, but it is challenging to achieve a selective response of multiple components under a uniform light field, which is actually of great importance for the development of soft robots. In this work, a series of near-infrared light (NIR)-responsive vitrimers (CR-vitrimers) are synthesized by carboxylate transesterification using carboxyl-bearing croconaine dye (CR-800) as a photothermal agent (PTA). NIR-responsive liquid crystalline elastomers (CR-vitrimer-LCEs) under NIR laser (λmax = 808 nm) without the template can be further prepared. More importantly, the dynamic covalent bonding properties of vitrimer allow for the fabrication of a hand-shaped actuator by hot pressing, consisting of "fingers" with different NIR-response threshold values. After programming as needed, the hand-shaped actuator successfully achieves local and sequential control under a uniform NIR light field.
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