Journal of Bionic Engineering ›› 2025, Vol. 22 ›› Issue (4): 1776-1787.doi: 10.1007/s42235-025-00725-5
• • 上一篇
Study on Microscopic Interfacial Mechanical Properties of the Geckos Foot Adhesion Mechanism
Yilin Su1；Xuyan Hou2,3,4,5,6；Kaiwei Li1；Zhe Wang1；Lei Ren1；Luquan Ren1
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1 Key Laboratory of Bionic Engineering (Ministry ofEducation), Jilin University, Changchun 130022, China
2 Research Center of Aerospace Mechanism and Control,School of Mechatronics Engineering, Harbin Institute ofTechnology, Harbin 150080, China
3 College of Aerospace Science and Engineering, NationalUniversity of Defense Technology, Changsha 410003, China 4 Space Structure Mechanism Technology Laboratory, ChinaAerospace Science and Technology, Group Co., Ltd.,Shanghai 201109, China
5 Zhengzhou Research Institute, Harbin Institute ofTechnology, Zhengzhou 450000, China 6 Songjiang Laboratory, Harbin Institute of Technology,Harbin 150080, China
Study on Microscopic Interfacial Mechanical Properties of the Geckos Foot Adhesion Mechanism
Yilin Su1；Xuyan Hou2,3,4,5,6；Kaiwei Li1；Zhe Wang1；Lei Ren1；Luquan Ren1
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1 Key Laboratory of Bionic Engineering (Ministry ofEducation), Jilin University, Changchun 130022, China
2 Research
Center of Aerospace Mechanism and Control,School of Mechatronics
Engineering, Harbin Institute ofTechnology, Harbin 150080, China
3 College of Aerospace Science and Engineering, NationalUniversity of Defense Technology, Changsha 410003, China 4 Space Structure Mechanism Technology Laboratory, ChinaAerospace Science and Technology, Group Co., Ltd.,Shanghai 201109, China
5 Zhengzhou Research Institute, Harbin Institute ofTechnology, Zhengzhou 450000, China 6 Songjiang Laboratory, Harbin Institute of Technology,Harbin 150080, China
摘要： The gecko's feet possess unique microstructures that enable strong adhesive forces when interacting with various surfaces. Understanding the interfacial forces generated by these microstructures is crucial for deciphering their adhesion mecha-nism. This study developed a contact mechanics model based on van der Waals forces and frictional self-locking effects, incorporating both the spatular pad and spatular shaft of the gecko's foot microstructures. Building on this foundation, a discrete element simulation model was established using the bonding method to replicate the contact between the gecko's spatula and different surfaces. The dynamic adhesion and detaching processes under normal and tangential external forces were simulated, allowing for the analysis of variation curves of normal and tangential adhesion forces at different detach-ing angles. This provided insights into the directional adhesion mechanics of the gecko's spatula. Furthermore, a force measurement system was constructed using a multi-degree-of-freedom nano-manipulator and an atomic force microscope within a scanning electron microscope. This system was used to experimentally test the adhesion characteristics of the gecko's foot microstructures, validating the accuracy of the proposed adhesion mechanics model.