Optimized Bio-inspired Micro-pillar Dry Adhesive and Its Application for an Unmanned Aerial Vehicle Adhering on and Detaching from a Ceiling

doi:10.1007/s42235-020-0003-x

Journal of Bionic Engineering ›› 2020, Vol. 17 ›› Issue (1): 45-54.doi: 10.1007/s42235-020-0003-x

Optimized Bio-inspired Micro-pillar Dry Adhesive and Its Application for an Unmanned Aerial Vehicle Adhering on and Detaching from a Ceiling

Qingsong He1*, Xianrui Xu1, Zhiwei Yu1, Kai Huo1, Zhaoyang Wang2, Nuo Chen2, Xuean Sun2,Gui Yin2, Peile Du3, Yang Li1, Zhendong Dai1*

1. Institute of Bio-inspired Structure and Surface Engineering, Jiangsu Provincial Key Laboratory of Bionic Functional Materials,
College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China
2. College of Astronautics, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China
3. China Ship Development and Design Center Shanghai Branch, Shanghai 201108, China

Received:2019-07-08 Revised:2019-11-27 Accepted:2019-10-29 Online:2020-01-10 Published:2020-01-20
Contact: Qingsong He, Zhendong Dai E-mail:heqingsong@nuaa.edu.cn, zddai@nuaa.edu.cn
About author:Qingsong He1*, Xianrui Xu1, Zhiwei Yu1, Kai Huo1, Zhaoyang Wang2, Nuo Chen2, Xuean Sun2,Gui Yin2, Peile Du3, Yang Li1, Zhendong Dai1*

Abstract

Abstract: Various bio-inspired dry adhesive materials have been investigated. In this work, lithography and silicon deep etching method were
used to fabricate bio-inspired micro-pillar dry adhesive materials of which the parameters, such as side length, Height to Side length
Aspect Ratio (HSAR), and inter-pillar Distance to Side length Aspect Ratio (DSAR) were comprehensively studied to obtain a dry adhesive
with high adhesion. An orthogonal array method was designed and a series of fabrication experiments were conducted to identify
optimum parameters, which resulted in a high normal adhesion of 2.98 N?cm?2 and a shear adhesion of 9.59 N?cm?2. An adhesion and
desorption device was further designed on basis of the optimum dry adhesive, which enables an Unmanned Aerial Vehicle (UAV) to
successfully adhere on and detach from a ceiling. This would allow an UAV to stay aloft for prolonged time, which could be invaluable to
many applications, such as energy conservation and aerial detection.

Key words: bio-inspired dry adhesive, orthogonal array method, UAV, adhere, ceiling

Qingsong He, Xianrui Xu, Zhiwei Yu, Kai Huo, Zhaoyang Wang, Nuo Chen, Xuean Sun, Gui Yin, Peile Du, Yang Li, Zhendong Dai. Optimized Bio-inspired Micro-pillar Dry Adhesive and Its Application for an Unmanned Aerial Vehicle Adhering on and Detaching from a Ceiling[J].Journal of Bionic Engineering, 2020, 17(1): 45-54.

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