Evaporative deposition of polystyrene microparticles on PDMS surface | |
Yu YS(余迎松); Wang MC; 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. | |
刊名 | SCIENTIFIC REPORTS |
2017-10-26 | |
卷号 | 7页码:10.1038/s41598-017-14593-5 |
ISSN号 | 2045-2322 |
DOI | 10.1038/s41598-017-14593-5 |
文献子类 | Article |
英文摘要 | Evaporation 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. |
分类号 | 一类 |
WOS关键词 | SESSILE WATER DROPLET ; SOFT SURFACES ; CONTACT LINE ; NANOPARTICLE ; PATTERNS ; MIXTURE ; FLOW ; WETTABILITY ; PARTICLES ; POLYMERS |
WOS研究方向 | Science & Technology - Other Topics |
语种 | 英语 |
WOS记录号 | WOS:000413816000048 |
资助机构 | Natural Science Foundation of China(11572114) ; Chinese Academy of Sciences (CAS)(QYZDJ-SSW-JSC019) ; CAS(XDB22040401) ; State Key Laboratory of Nonlinear Mechanics (LNM) |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/71927] |
专题 | 力学研究所_非线性力学国家重点实验室 |
通讯作者 | Yu YS(余迎松) |
推荐引用方式 GB/T 7714 | Yu YS,Wang MC,Huang XF,et al. Evaporative deposition of polystyrene microparticles on PDMS surface[J]. SCIENTIFIC REPORTS,2017,7:10.1038/s41598-017-14593-5. |
APA | Yu YS,Wang MC,Huang XF,&Yu, YS .(2017).Evaporative deposition of polystyrene microparticles on PDMS surface.SCIENTIFIC REPORTS,7,10.1038/s41598-017-14593-5. |
MLA | Yu YS,et al."Evaporative deposition of polystyrene microparticles on PDMS surface".SCIENTIFIC REPORTS 7(2017):10.1038/s41598-017-14593-5. |
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