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Design and fabrication of a gecko-inspired surface for improving the grasping ability of a humanoid dexterous hand

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Abstract

Many studies have examined the design, fabrication and characteristics of gecko-inspired adhesives, but applied research on gecko-inspired surfaces in humanoid dexterous hands is relatively scarce. Here, a wedged slanted structure with a curved substrate suitable for humanoid dexterous fingers was designed and manufactured via ultraprecision machining and replica molding. The adhesion and friction properties of the wedged slanted structure show obvious anisotropic characteristics in the gripping and releasing directions, and the influence of structural parameters and motion parameters on the adhesion and friction was systematically studied. The humanoid dexterous fingers with gecko-inspired surfaces greatly increased the grasping force limit (increase to 4.02 times) based on the grasping of measuring cups with different volumes of water and improved the grasping stability based on the picking up of smooth steel balls of different diameters. This study shows that this process, based on ultraprecision machining and replica molding, is a green, high-efficiency, and low-cost method to fabricate large-area biomimetic surfaces that has potential applications in dexterous humanoid hands to improve grasping ability, stability and adaptability.

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Authors and Affiliations

  1. School of Mechatronic Engineering, Beijing Institute of Technology, Beijing, 100081, China

    ZhiHong Jiang, MingHui Shen, YiFan Ma, JiangTao Che & Hui Li

  2. Beijing Advanced Innovation Center for Intelligent Robots and Systems, Beijing, 100081, China

    ZhiHong Jiang, MingHui Shen, YiFan Ma, JiangTao Che & Hui Li

  3. Key Laboratory of Biomimetic Robots and Systems, Ministry of Education, Beijing, 100081, China

    ZhiHong Jiang, MingHui Shen, YiFan Ma, JiangTao Che & Hui Li

  4. China Electronics Standardization Institute, Beijing, 100007, China

    JiangTao Che

Authors
  1. ZhiHong Jiang
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  2. MingHui Shen
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  3. YiFan Ma
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  4. JiangTao Che
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  5. Hui Li
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Corresponding authors

Correspondence to JiangTao Che or Hui Li.

Additional information

This work was supported by the National Key Research and Development Program of China (Grant No. 2018YFB1305300), the National Natural Science Foundation of China (Grant Nos. 61733001, 61873039, U1713215, U1913211, and U2013602), and the China Postdoctoral Science Foundation (Grant No. 2021M690017).

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The supporting information is available online at https://tech.scichina.com and https://link.springer.com. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.

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Jiang, Z., Shen, M., Ma, Y. et al. Design and fabrication of a gecko-inspired surface for improving the grasping ability of a humanoid dexterous hand. Sci. China Technol. Sci. 66, 784–792 (2023). https://doi.org/10.1007/s11431-022-2176-4

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  • DOI: https://doi.org/10.1007/s11431-022-2176-4

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