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	The Crowding Model as a Tool to Understand and Fabricate Gecko-Inspired Dry Adhesives
	Pesika, Noshir S. ; Gravish, Nick ; Wilkinson, Matt ; Zhao, Boxin ; Zeng, Hongbo ; Tian, Yu ; Israelachvili, Jacob ; Autumn, Kellar
	2010-10-12 ; 2010-10-12
关键词	Adhesion Bio-inspired adhesives Crowding model Dry adhesives Friction Gecko FOOT-HAIR ELASTIC-MODULUS ROUGH SURFACES SETAL ARRAYS ATTACHMENT LIZARDS DETACHMENT LOCOMOTION FRICTION SYSTEMS Engineering, Chemical Materials Science, Multidisciplinary Mechanics
中文摘要	A model based on geometrical considerations of pillars in a square lattice is analyzed to predict its compression behavior under an applied normal load. Specifically, the ocrowding modelo analyzes the point at which tilting pillars become crowded onto neighboring pillars, which limits the achievable tilt angle under an applied normal load, which in turn limits their adhesion and friction forces. The crowding model is applied to the setal arrays of the tokay gecko. Good agreement is found between the predictions of the crowding model (a critical tilt angle of c=12.6 degrees to the substrate corresponding to a vertical compression of z=49m of the setae within the setal array) and experimental data for the compression of tokay gecko setal arrays. The model is also used as a criterion to predict the number density of setae in a tokay gecko setal array based on the lateral inter-pillar spacing distance, s, between tetrads of setae and the effective diameter, d, of the tetrad. The model predicts a packing density of 14,200setae/mm2, which is again in good agreement with the measured value of 14,400setae/mm2. The crowding model can be used as a tool to determine the optimum geometrical parameters, including the diameter and the spacing distance between pillars, to fabricate dry adhesives inspired by the gecko.
语种	英语 ; 英语
出版者	TAYLOR & FRANCIS LTD ; ABINGDON ; 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/80401]
专题	清华大学
推荐引用方式 GB/T 7714	Pesika, Noshir S.,Gravish, Nick,Wilkinson, Matt,et al. The Crowding Model as a Tool to Understand and Fabricate Gecko-Inspired Dry Adhesives[J],2010, 2010.
APA	Pesika, Noshir S..,Gravish, Nick.,Wilkinson, Matt.,Zhao, Boxin.,Zeng, Hongbo.,...&Autumn, Kellar.(2010).The Crowding Model as a Tool to Understand and Fabricate Gecko-Inspired Dry Adhesives..
MLA	Pesika, Noshir S.,et al."The Crowding Model as a Tool to Understand and Fabricate Gecko-Inspired Dry Adhesives".(2010).

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