Near-Infrared Responsive Gecko-Inspired Flexible Arm Gripper
Near-Infrared Responsive Gecko-Inspired Flexible Arm Gripper
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DOI：
10.1016/j.mtphys.2022.100919
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发表时间：
2022-11
影响因子：
11.5
通讯作者：
Xiaohang Luo;Xiaoxiao Dong;Hong Zhao;Travis Shihao Hu;Xiuping Lan;Lan Ding;Jiapeng Li;Huiqin Ni;Jordan A. Contreras;Hongbo Zeng;Quan Xu
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文献类型：
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作者：
Xiaohang Luo;Xiaoxiao Dong;Hong Zhao;Travis Shihao Hu;Xiuping Lan;Lan Ding;Jiapeng Li;Huiqin Ni;Jordan A. Contreras;Hongbo Zeng;Quan Xu
受壁虎脚趾微结构的启发，设计并制备了一种可驱动的双层结构仿生壁虎脚趾粘附表面。驱动能力来源于驱动水凝胶层经近红外光（808 nm）照射后脱水水凝胶的体积收缩（单层水凝胶的温度可在30 s内从17.9 ℃升至107 ℃，卷曲角度可卷曲0°-180°，与折叠状态相似），另一层具有类似壁虎脚趾的微观结构，可以承受22.4N/cm−2的最大剪切力。这两层的不同性质结合在一起，以实现类似于壁虎行走过程的粘附/解吸的可逆转变。对可驱动仿生壁虎趾附着面的双层结构进行了结构优化，制备了一种仅需单侧照射即可抓放的四臂夹持器。这种双层结构的仿生壁虎趾附着表面具有很大的设计潜力，在未来，希望它可以为大驱动遥控机器人和快速驱动软机器人的制备提供见解。
Inspired by the microstructure of gecko toes, a drivable bionic gecko toe adhesion surface with double-layer structure was designed and fabricated. The driving ability is derived from the volume shrinkage of the dehydrated hydrogel after the driving hydrogel layer is irradiated by near-infrared light (808 nm) (the temperature of the single-layer hydrogel can be increased from 17.9 °C to 107 °C within 30s, and the curling angle can be curled by 0°–180°, similar to the folded state.), and another layer with a microstructure similar to gecko toes can withstand a maximum shear force of 22.4N/cm−2. The different properties of the two layers are combined together to achieve a reversible transition of adhesion/desorption similar to the gecko walking process. The double-layer structure of the drivable bionic gecko toe adhesion surface was structurally optimized to prepare a four-arm gripper that could grasp/release only by unilateral irradiation. This bilayer-structured bionic gecko toe adhesion surface has great design potential, and in the future, it is hoped that it can provide insights into the preparation of large-actuated remote-controlled robots and fast-actuated soft robots.