Evaporation of ethanol/water mixture droplets on micro-patterned PDMS surfaces | |
Yu YS1; Huang XF(黄先富)2; Sun L1; Zhou JZ1; Zhou A1 | |
刊名 | International Journal of Heat and Mass Transfer |
2019 | |
卷号 | 144页码:118708 |
ISSN号 | 0017-9310 |
DOI | 10.1016/j.ijheatmasstransfer.2019.118708 |
英文摘要 | We report evaporation of ethanol/water mixture droplets on both pillar-arrayed and micro-holed poly-dimethylsiloxane (PDMS) surfaces. Analysis of wettability shows that (i) when the pillar-to-pillar spacing is 5 mu m, the pillar-arrayed PDMS surfaces are Cassie-Baxter-wetted; (ii) when the pillar-to-pillar spacing is 20 or 50 mu m, part of each pillar-arrayed surface is Cassie-Baxter-wetted while the other part Wenzel-wetted; (iii) all micro-holed PDMS surfaces are Cassie-Baxter-wetted; (iv) the advancing and receding contact angles increase with the increase of the pillar-to-pillar spacing, while they decrease with the increase of the hole-to-hole spacing. The investigation on evaporation of mixture droplets demonstrates that (i) evaporation on pillar-arrayed PDMS first proceeds with constant contact radius mode (CCR) due to the strong adhesion between the surface and the droplet; (ii) on micro-holed surfaces CCR stage is also observed for the surface with the hole-to-hole spacing of 5 mu m, while it is not found at high ethanol concentration for surfaces with the hole-to-hole spacings of 20 mu m and 50 mu m, which is attributed to the weak adhesion between the micro-holed surfaces and the droplet. Finally, the evolution of droplet volume and its two-third power are discussed. (C) 2019 Elsevier Ltd. All rights reserved. |
分类号 | 一类 |
URL标识 | 查看原文 |
语种 | 英语 |
WOS记录号 | WOS:000494883300096 |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/79557] |
专题 | 力学研究所_非线性力学国家重点实验室 |
作者单位 | 1.Department of Mechanics, School of Civil Engineering, Architecture and Environment, Hubei University of Technology 2.State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences |
推荐引用方式 GB/T 7714 | Yu YS,Huang XF,Sun L,et al. Evaporation of ethanol/water mixture droplets on micro-patterned PDMS surfaces[J]. International Journal of Heat and Mass Transfer,2019,144:118708. |
APA | Yu YS,Huang XF,Sun L,Zhou JZ,&Zhou A.(2019).Evaporation of ethanol/water mixture droplets on micro-patterned PDMS surfaces.International Journal of Heat and Mass Transfer,144,118708. |
MLA | Yu YS,et al."Evaporation of ethanol/water mixture droplets on micro-patterned PDMS surfaces".International Journal of Heat and Mass Transfer 144(2019):118708. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论