Wet-adhesion properties of microstructured surfaces inspired by newt footpads
Gong, Ling1,2; Yu, Haiwu2; Wu, Xuan2; Wang, Xiaojie2
2018-11-01
Source PublicationSMART MATERIALS AND STRUCTURES
ISSN0964-1726
Volume27Issue:11Pages:12
Abstract

To understand wet adhesion of newt foot pads, we firstly examined and evaluated the attachment and climbing abilities of newts under three different wetting conditions. Then we characterized the micro and nanostructures of newts' foot pads by using the scanning electron microscopy. Followed by observing the micro and nanoscale structural features of newts' foot pads, four different micropatterns, including round pillars, hexagonal pillars, and two hybrid patterns with closed and semi-closed hexagonal ridges, were designed and fabricated on PDMS. The static friction and adhesion of microstructured surfaces were measured by using a multi-functional surface meter and an adhesion testing equipment, respectively. Effects of micropattern on static friction, and effects of retraction speed, amount of liquid, approach-retraction cycle on adhesion were investigated experimentally. Results suggested that a larger amount of liquid decreases the adhesion and friction, but a little liquid increases the adhesion and friction. It was found that there exists an optimum amount of liquid (about 0.1 mu l) that can enhance the adhesion. Our results can give insights into the repeated shear movements of a newt's foot pads in the stream condition as well as the possible functions of dense nanopillar arrays on newt foot pads.

Keywordnewts adhesive pads microstructures biomimetics static friction wet adhesion
DOI10.1088/1361-665X/aad6d2
WOS KeywordFROG TOE PADS ; TREE-FROG ; MECHANISMS ; FRICTION ; MORPHOLOGY ; UNDERWATER
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51605467] ; National Natural Science Foundation of China[51305425] ; Youth Innovation Promotion Association CAS[2016387] ; Youth Innovation Promotion Association CAS[2016387] ; National Natural Science Foundation of China[51305425] ; National Natural Science Foundation of China[51605467]
WOS Research AreaInstruments & Instrumentation ; Materials Science
WOS SubjectInstruments & Instrumentation ; Materials Science, Multidisciplinary
WOS IDWOS:000445775300001
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/39142
Collection中科院合肥物质科学研究院先进制造技术研究所
Corresponding AuthorWang, Xiaojie
Affiliation1.Univ Sci & Technol China, Dept Precis Machinery & Precis Instrumentat, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Adv Mfg Technol, Changzhou 213164, Jiangsu, Peoples R China
First Author AffilicationChinese Acad Sci, Inst Adv Mfg Technol, Hefei Inst Phys Sci, Huihong Bldg,Changwu Middle Rd 801, Changzhou 213164, Jiangsu, Peoples R China
Corresponding Author AffilicationChinese Acad Sci, Inst Adv Mfg Technol, Hefei Inst Phys Sci, Huihong Bldg,Changwu Middle Rd 801, Changzhou 213164, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Gong, Ling,Yu, Haiwu,Wu, Xuan,et al. Wet-adhesion properties of microstructured surfaces inspired by newt footpads[J]. SMART MATERIALS AND STRUCTURES,2018,27(11):12.
APA Gong, Ling,Yu, Haiwu,Wu, Xuan,&Wang, Xiaojie.(2018).Wet-adhesion properties of microstructured surfaces inspired by newt footpads.SMART MATERIALS AND STRUCTURES,27(11),12.
MLA Gong, Ling,et al."Wet-adhesion properties of microstructured surfaces inspired by newt footpads".SMART MATERIALS AND STRUCTURES 27.11(2018):12.
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