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Experimental and theoretical investigations of evaporation of sessile water droplet on hydrophobic surfaces
Yu YS(余迎松); Wang ZQ(王子千); Zhao YP(赵亚溥); yzhao@imech.ac.cn
Source PublicationJournal of Colloid and Interface Science
2012-01
Volume365Issue:1Pages:254-259
ISSN0021-9797
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.


KeywordSolid-surfaces Polymer Surfaces Contact Angles Still Air Constant Microdroplets Dynamics Rates Films Droplet Evaporation Contact Angle Constant Contact Radius Hydrophobic Surfaces
Subject Area微机电系统中的流体力学问题
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000296401300032
DepartmentLNM纳/微系统力学与物理力学
Classification二类/Q2
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/45739
Collection非线性力学国家重点实验室
Corresponding Authoryzhao@imech.ac.cn
Recommended Citation
GB/T 7714
Yu YS,Wang ZQ,Zhao YP,et al. Experimental and theoretical investigations of evaporation of sessile water droplet on hydrophobic surfaces[J]. Journal of Colloid and Interface Science,2012,365(1):254-259.
APA 余迎松,王子千,赵亚溥,&yzhao@imech.ac.cn.(2012).Experimental and theoretical investigations of evaporation of sessile water droplet on hydrophobic surfaces.Journal of Colloid and Interface Science,365(1),254-259.
MLA 余迎松,et al."Experimental and theoretical investigations of evaporation of sessile water droplet on hydrophobic surfaces".Journal of Colloid and Interface Science 365.1(2012):254-259.
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