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Title:
Experimental and theoretical investigations of evaporation of sessile water droplet on hydrophobic surfaces
Author: Yu YS(余迎松); Wang ZQ(王子千); Zhao YP(赵亚溥)
Source: Journal of Colloid and Interface Science
Issued Date: 2012-01
Volume: 365, Issue:1, Pages:254-259
Abstract:

Experiments of sessile water droplet evaporation on both polydimethylsiloxane (PDMS) and Teflon surfaces were conducted. All experiments begin with constant contact area mode (the initial contact angle is greater than 90°), switch to constant contact angle mode and end with mixed mode. Based on the assumptions of spherical droplet and uniform concentration gradient, theoretical analyses for both constant contact area and constant contact angle modes are made and theoretical solutions are derived accordingly, especially a theoretical solution of contact angle is presented first for CCR stage with any value of the initial contact angle. Moreover, comparisons between the theoretical solutions and experimental data of contact angle in CCR stage demonstrate the validity of the theoretical solution and it would help for a better understanding and application of water droplet on solid surfaces, which is quite often encountered in lab-on-a-chip, polymerase chain reaction (PCR) and other micro-fluidics devices.


Keyword: solid-surfaces ; polymer surfaces ; contact angles ; still air ; constant ; microdroplets ; dynamics ; rates ; films ; droplet ; evaporation ; contact angle ; constant contact radius ; hydrophobic surfaces
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: yzhao@imech.ac.cn
Related URLs: 查看原文
DOC Type: Article
WOS ID: WOS:000296401300032
ISSN: 0021-9797
Subject: 流体力学::微机电系统中的流体力学问题
Department: LNM纳/微系统力学与物理力学
Classification: 二类/Q2
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/45739
Appears in Collections:非线性力学国家重点实验室_期刊论文

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Recommended Citation:
Yu YS,Wang ZQ,Zhao YP. Experimental and theoretical investigations of evaporation of sessile water droplet on hydrophobic surfaces[J]. Journal of Colloid and Interface Science,2012-01-01,365(1):254-259.
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