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Article: Tuning the geometrical parameters of biomimetic fibrillar structures to enhance adhesion

TitleTuning the geometrical parameters of biomimetic fibrillar structures to enhance adhesion
Authors
Issue Date2008
PublisherThe Royal Society. The Journal's web site is located at http://publishing.royalsociety.org/index.cfm?page=1572
Citation
Journal Of The Royal Society Interface, 2008, v. 5 n. 20, p. 373-382 How to Cite?
AbstractFibrillar structures are common features on the feet of many animals, such as geckos, spiders and flies. Theoretical analyses often use periodical array to simulate the assembly, and each fibril is assumed to be of equal load sharing (ELS). On the other hand, studies on a single fibril show that the adhesive interface is flaw insensitive when the size of the fibril is not larger than a critical one. In this paper, the Dugdale-Barenblatt model has been used to study the conditions of ELS and how to enhance adhesion by tuning the geometrical parameters in fibrillar structures. Different configurations in an array of fibres are considered, such as line array, square and hexagonal patterns. It is found that in order to satisfy flaw-insensitivity and ELS conditions, the number of fibrils and the pull-off force of the fibrillar interface depend significantly on the fibre separation, the interface interacting energy, the effective range of cohesive interaction and the radius of fibrils. Proper tuning of the geometrical parameters will enhance the pull-off force of the fibrillar structures. This study may suggest possible methods to design strong adhesion devices for engineering applications. © 2007 The Royal Society.
Persistent Identifierhttp://hdl.handle.net/10722/76084
ISSN
2015 Impact Factor: 3.818
2015 SCImago Journal Rankings: 1.622
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChen, Sen_HK
dc.contributor.authorSoh, AKen_HK
dc.date.accessioned2010-09-06T07:17:29Z-
dc.date.available2010-09-06T07:17:29Z-
dc.date.issued2008en_HK
dc.identifier.citationJournal Of The Royal Society Interface, 2008, v. 5 n. 20, p. 373-382en_HK
dc.identifier.issn1742-5689en_HK
dc.identifier.urihttp://hdl.handle.net/10722/76084-
dc.description.abstractFibrillar structures are common features on the feet of many animals, such as geckos, spiders and flies. Theoretical analyses often use periodical array to simulate the assembly, and each fibril is assumed to be of equal load sharing (ELS). On the other hand, studies on a single fibril show that the adhesive interface is flaw insensitive when the size of the fibril is not larger than a critical one. In this paper, the Dugdale-Barenblatt model has been used to study the conditions of ELS and how to enhance adhesion by tuning the geometrical parameters in fibrillar structures. Different configurations in an array of fibres are considered, such as line array, square and hexagonal patterns. It is found that in order to satisfy flaw-insensitivity and ELS conditions, the number of fibrils and the pull-off force of the fibrillar interface depend significantly on the fibre separation, the interface interacting energy, the effective range of cohesive interaction and the radius of fibrils. Proper tuning of the geometrical parameters will enhance the pull-off force of the fibrillar structures. This study may suggest possible methods to design strong adhesion devices for engineering applications. © 2007 The Royal Society.en_HK
dc.languageengen_HK
dc.publisherThe Royal Society. The Journal's web site is located at http://publishing.royalsociety.org/index.cfm?page=1572en_HK
dc.relation.ispartofJournal of the Royal Society Interfaceen_HK
dc.subject.meshAdhesivenessen_HK
dc.subject.meshBiomimetic Materialsen_HK
dc.subject.meshElasticityen_HK
dc.subject.meshModels, Theoreticalen_HK
dc.subject.meshNanostructuresen_HK
dc.titleTuning the geometrical parameters of biomimetic fibrillar structures to enhance adhesionen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1742-5689&volume=5&issue=20&spage=373&epage=382&date=2008&atitle=Tuning+the+geometrical+parameters+of+biomimetic+fibrillar+structures+to+enhance+adhesionen_HK
dc.identifier.emailSoh, AK:aksoh@hkucc.hku.hken_HK
dc.identifier.authoritySoh, AK=rp00170en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1098/rsif.2007.1121en_HK
dc.identifier.pmid17638648-
dc.identifier.scopuseid_2-s2.0-38349188888en_HK
dc.identifier.hkuros144628en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-38349188888&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume5en_HK
dc.identifier.issue20en_HK
dc.identifier.spage373en_HK
dc.identifier.epage382en_HK
dc.identifier.eissn1742-5662-
dc.identifier.isiWOS:000252465900012-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridChen, S=12806098400en_HK
dc.identifier.scopusauthoridSoh, AK=7006795203en_HK

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