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题名: Bio-inspired flexible fiber brushes that keep liquids in a controlled manner by closing their ends
作者: Yamamoto, Tetsuya1, 3; Meng, Qing'an2; Wang, Qianbin2; Liu, Huan2; Jiang, Lei2, 4; Doi, Masao1
刊名: NPG ASIA MATERIALS
发表日期: 2016-02-01
卷: 8
收录类别: SCI
英文摘要: When brushes of flexible fibers are removed from liquid baths, these brushes sometimes show unwanted droplets at their ends, depending on the length, rigidity and shape of their fibers. Capillary forces arising from the varying cross-sections of conical fiber tips have been thought to eliminate the droplets. However, these forces may not operate with water, which fills the entire space between the fibers of a brush. Here, we theoretically show that brushes eliminate unwanted droplets with a physical mechanism that is significantly different from a single conical fiber by 'closing' their ends. We analyze the hydrostatics of water in a brush when it is removed from a bath, and we identify the condition under which the end of the brush is closed, emphasizing the roles played by the elastic deformation of the flexible fibers owing to interfacial forces. Moreover, this theory predicts that the volume of water that is captured by brushes is a non-monotonic function of the length of their fibers because the fibers show excluded volume interactions when their ends are 'closed'. This theory may guide the design of liquid-transfer devices that can retain liquids in a controlled manner.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35853
Appears in Collections:有机固体实验室_期刊论文

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作者单位: 1.Beihang Univ, Sch Chem & Environm, Ctr Soft Matter Phys & Its Applicat, Beijing 100191, Peoples R China
2.Beihang Univ, Sch Chem & Environm, Minist Educ, Key Lab Bioinspired Smart Interfacial Sci & Techn, Xueyuan Rd 37, Beijing 100191, Peoples R China
3.Nagoya Univ, Natl Composite Ctr, Nagoya, Aichi 4648603, Japan
4.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, BNLMS, Beijing 100080, Peoples R China
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