Tunable Adhesion of a Bio-Inspired Micropillar Arrayed Surface Actuated by a Magnetic Field

doi:10.1115/1.4041550

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	Tunable Adhesion of a Bio-Inspired Micropillar Arrayed Surface Actuated by a Magnetic Field
	Li XJ(李兴济); Peng ZL(彭志龙); Yang YZ(杨亚政); Chen SH(陈少华)
刊名	JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
	2019
卷号	86 期号:1 页码:11
关键词	micropillar arrayed surface magnetic field tunable adhesion mechanical mechanism large elastic deformation
ISSN号	0021-8936
DOI	10.1115/1.4041550
通讯作者	Chen, Shaohua(chenshaohua72@hotmail.com)
英文摘要	Bio-inspired functional surfaces attract many research interests due to the promising applications. In this paper, tunable adhesion of a bio-inspired micropillar arrayed surface actuated by a magnetic field is investigated theoretically in order to disclose the mechanical mechanism of changeable adhesion and the influencing factors. Each polydimethylsiloxane (PDMS) micropillar reinforced by uniformly distributed magnetic particles is assumed to be a cantilever beam. The beam's large elastic deformation is obtained under an externally magnetic field. Specially, the rotation angle of the pillar's end is predicted, which shows an essential effect on the changeable adhesion of the micropillar arrayed surface. The larger the strength of the applied magnetic field, the larger the rotation angle of the pillar's end will be, yielding a decreasing adhesion force of the micropillar arrayed surface. The difference of adhesion force tuned by the applied magnetic field can be a few orders of magnitude, which leads to controllable adhesion of such a micropillar arrayed surface. Influences of each pillar's cross section shape, size, intervals between neighboring pillars, and the distribution pattern on the adhesion force are further analyzed. The theoretical predictions are qualitatively well consistent with the experimental measurements. The present theoretical results should be helpful not only for the understanding of mechanical mechanism of tunable adhesion of micropillar arrayed surface under a magnetic field but also for further precise and optimal design of such an adhesion-controllable bio-inspired surface in future practical applications.
分类号	一类/力学重要期刊
资助项目	Beijing Institute of Technology (The BIT Creative Research Plan) ; National Natural Science Foundation of China[11532013] ; National Natural Science Foundation of China[11672302] ; National Natural Science Foundation of China[11872114]
WOS关键词	BIOMIMETIC FIBRILLAR INTERFACES ; REVERSIBLE ADHESION ; GECKO ADHESION ; FRICTIONAL FORCES ; ASPECT RATIO ; MECHANICS ; CONTACT ; ATTACHMENT ; BIOMECHANICS ; DESIGN
WOS研究方向	Mechanics
语种	英语
WOS记录号	WOS:000469485600007
资助机构	Beijing Institute of Technology (The BIT Creative Research Plan) ; National Natural Science Foundation of China
其他责任者	Chen, Shaohua
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/80711]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Li XJ,Peng ZL,Yang YZ,et al. Tunable Adhesion of a Bio-Inspired Micropillar Arrayed Surface Actuated by a Magnetic Field[J]. JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME,2019,86(1):11.
APA	李兴济,彭志龙,杨亚政,&陈少华.(2019).Tunable Adhesion of a Bio-Inspired Micropillar Arrayed Surface Actuated by a Magnetic Field.JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME,86(1),11.
MLA	李兴济,et al."Tunable Adhesion of a Bio-Inspired Micropillar Arrayed Surface Actuated by a Magnetic Field".JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME 86.1(2019):11.