Optical Nanofiber Skins for Multifunctional Humanoid Tactility
Optical Nanofiber Skins for Multifunctional Humanoid Tactility
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DOI：
10.1002/aisy.202200203
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发表时间：
2023-01
影响因子：
7.4
通讯作者：
Yao Tang;Longteng Yu;Jing Pan;Ni Yao;Wei-dong Geng;Xiong Li;Liming Tong;Lei Zhang;Zhengyou Z
中科院分区：
文献类型：
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作者：
Yao Tang;Longteng Yu;Jing Pan;Ni Yao;Wei-dong Geng;Xiong Li;Liming Tong;Lei Zhang;Zhengyou Z
类人智能在物体识别、灵巧操作和人机交互等方面大大提高了机器人的智能。对于许多人工触觉传感器，特别是那些基于光学原理的传感器，可伸缩性，笨重性和单峰性限制了它们作为人形皮肤的潜力。在此，通过将实验室制造的光学纳米纤维（ONF）嵌入弹性体薄膜中，实现了柔软，灵活，薄（约500 μm，类似于人类皮肤）和多模态（力和热敏）机器人皮肤。这些上级特性源于ONF的低抗弯刚度和大倏逝场，这是由于它们的亚波长直径（低至450 nm）。通过调谐光的波长，ONF直径，和皮肤厚度，可变的灵敏度和传感范围的力和温度的报告。根据不同的传感要求，可以在ONF皮肤上进一步组装特殊模块，以获得各种表面特性，包括硬度，纹理和热导率。ONF皮肤可以使商业机器人模仿人类行为，包括自适应抓取脆弱物体，非接触式温度测量，甚至感知叶脉。预计这些ONF皮肤可以在多种智能系统中提供独特的解决方案，如机器人，假肢，人机界面和可穿戴设备。
Humanoid tactility has been boosting robotic intelligence in object recognition, dexterous manipulation, and human–robot interaction. For many artificial tactile sensors, especially those based on optical principles, inflexibility, bulkiness, and monomodality limit their potential to function as humanoid skins. Herein, by embedding lab‐made optical nanofibers (ONFs) into elastomeric films, soft, flexible, thin (around 500 μm, similar to human skin), and multimodal (force and thermosensitive) robotic skins are achieved. These superior characteristics arise from the low flexural rigidity and large evanescent field of ONFs, due to their subwavelength diameters (down to 450 nm). By tuning light wavelength, ONF diameter, and skin thickness, variable sensitivities and sensing ranges for both force and temperature are reported. Depending on different sensing requirements, special modules can be further assembled on the ONF skins for various surface properties, including hardness, texture, and thermal conductivity. The ONF skins can enable a commercial robot to emulate human behaviors, including adaptive grasping of flimsy objects, contactless temperature measurement, and even the perception of leaf veins. It is anticipated that these ONF skins could offer a unique solution in multiple intelligent systems such as robotics, prosthetics, human–machine interface and wearable devices.