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Evaporative deposition of polystyrene microparticles on PDMS surface
Yu, Ying-Song; Wang, Ming-Chao; Huang XF(黄先富); Yu, YS (reprint author), Hubei Univ Technol, Sch Civil Engn Architecture & Environm, Dept Mech, Wuhan 430068, Hubei, Peoples R China.
Source PublicationSCIENTIFIC REPORTS
2017-10-26
Volume7
ISSN2045-2322
AbstractEvaporation of water and ethanol/water droplets containing large polystyrene (PS) microparticles on polydimethylsiloxane (PDMS) surface was experimentally investigated. It is found that no matter with or without small addition of ethanol, a compact monolayer deposition is formed for lower microparticle concentration while mountain-like deposition for higher concentration. Since the more volatile compound (ethanol) evaporates more quickly than the less volatile compound (water), evaporation of ethanol/water mixture droplet exhibits different characteristics from pure water. When the concentration of microparticle is low, the contact radius of ethanol/water mixture droplet decreases throughout the whole process, while the contact angle increases at first to a maximum, then keeps almost constant, and finally decreases sharply. However, the evaporation of ethanol/water mixture droplet with higher concentration of microparticle behaviors more complex. The settling time of microparticles was estimated and its theoretical value agrees well with the experimental one. Moreover, a mechanism of self-pinning of microparticles was used to elucidate the deposition behavior of microparticles, indicating that as the contact line is depinning, the liquid film covering the outmost microparticle becomes thicker and thicker, and the microparticles have to move spontaneously with the depinning contact line under the action of capillary force.
DOI10.1038/s41598-017-14593-5
Indexed BySCI
Language英语
WOS IDWOS:000413816000048
WOS KeywordSESSILE WATER DROPLET ; SOFT SURFACES ; CONTACT LINE ; NANOPARTICLE ; PATTERNS ; MIXTURE ; FLOW ; WETTABILITY ; PARTICLES ; POLYMERS
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
Funding OrganizationNatural Science Foundation of China(11572114) ; Chinese Academy of Sciences (CAS)(QYZDJ-SSW-JSC019) ; CAS(XDB22040401) ; State Key Laboratory of Nonlinear Mechanics (LNM)
DepartmentLNM纳/微系统力学与物理力学
Classification一类
Ranking3
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/71927
Collection非线性力学国家重点实验室
Corresponding AuthorYu, YS (reprint author), Hubei Univ Technol, Sch Civil Engn Architecture & Environm, Dept Mech, Wuhan 430068, Hubei, Peoples R China.
Recommended Citation
GB/T 7714
Yu, Ying-Song,Wang, Ming-Chao,Huang XF,et al. Evaporative deposition of polystyrene microparticles on PDMS surface[J]. SCIENTIFIC REPORTS,2017,7.
APA Yu, Ying-Song,Wang, Ming-Chao,黄先富,&Yu, YS .(2017).Evaporative deposition of polystyrene microparticles on PDMS surface.SCIENTIFIC REPORTS,7.
MLA Yu, Ying-Song,et al."Evaporative deposition of polystyrene microparticles on PDMS surface".SCIENTIFIC REPORTS 7(2017).
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