基于PDMS的蘑菇状仿生黏附微阵列新型制造方法

doi:10.11896/cldb.21070247

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Abstract Inspired by the micro-nano ciliary structures on the toes of geckos and beetles in nature, a kind of biomimetic dry adhesive with mushroom-shaped microarray composed of polydimethylsiloxane(PDMS)was “dipped” and fabricated by a feeding experimental device. The contact area of a single fiber of the mushroom-shaped bionic dry adhesive is 1.12×10^-3 mm², the maximum shear adhesion strength is up to 2.65 N/cm², and the maximum normal adhesion strength is 5.18 N/cm². Compared with manual manufacturing, the adhesion area increased by 33.74%, and the shear and normal adhesion strength increased by 225% and 280% respectively. Considering the SEM images, optical micrograph, adhesive state and adhesion work between adhesive and contact surface, the adhesion performance was conducted by theoretical analysis. By this method, the adhesion angle of the mushroom-shaped biomimetic dry adhesive was reduced, and the diameter, flatness, effective adhesion work, adhesion area, and flexibility of the microarray were significantly improved. The adhesive could better adapt to the contact surface with good repeatability and significantly improve the shear and normal adhesive strength. This work provides a novel idea for manufacturing mushroom-shaped biomimetic dry adhesive.

Key words： biomimetic dry adhesive mushroom-shaped microarray effective adhesion work

Published: 10 March 2023 Online: 2023-03-14

CLC number:

TH111

Fund:National Natural Science Foundation of China (51605220, U1637101) and Fundamental Research Funds for the Central Universities (NS2020029).

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	Articles by authors
	ZHAO Zefang
	HE Qingsong
	ZHANG Hao
	YU Min
	LU Ji
	TIAN Chengbo
	PAN Hui

Cite this article:

ZHAO Zefang,HE Qingsong,ZHANG Hao, et al. Novel Fabrication Method of Mushroom-shaped Bioinspired Adhesive Microstructure Based on PDMS[J]. Materials Reports, 2023, 37(5): 21070247-6.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.21070247 OR http://www.mater-rep.com/EN/Y2023/V37/I5/21070247

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