Wet-adhesion properties of microstructured surfaces inspired by newt footpads | |
Gong, Ling1,2; Yu, Haiwu2; Wu, Xuan2; Wang, Xiaojie2 | |
刊名 | SMART MATERIALS AND STRUCTURES
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2018-11-01 | |
卷号 | 27期号:11页码:12 |
关键词 | newts adhesive pads microstructures biomimetics static friction wet adhesion |
ISSN号 | 0964-1726 |
DOI | 10.1088/1361-665X/aad6d2 |
英文摘要 | 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. |
资助项目 | Youth Innovation Promotion Association CAS[2016387] ; National Natural Science Foundation of China[51305425] ; National Natural Science Foundation of China[51605467] |
WOS关键词 | FROG TOE PADS ; TREE-FROG ; MECHANISMS ; FRICTION ; MORPHOLOGY ; UNDERWATER |
WOS研究方向 | Instruments & Instrumentation ; Materials Science |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000445775300001 |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/39141] ![]() |
专题 | 合肥物质科学研究院_中科院合肥物质科学研究院先进制造技术研究所 |
通讯作者 | Wang, Xiaojie |
作者单位 | 1.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 |
推荐引用方式 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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