Evaporating thin film profile near the contact line of a partially   wetting water droplet under environmental heating

doi:10.1016/j.ijheatmasstransfer.2016.11.041

CORC > 北京大学 > 工学院

	Evaporating thin film profile near the contact line of a partially wetting water droplet under environmental heating
	Mehrizi, Abbasali Abouei ; Wang, Hao
刊名	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
	2017
关键词	Partial wetting Nanoscale morphology Receding Droplet evaporation Contact line Thin film AFM ATOMIC-FORCE MICROSCOPY LIQUID DROPLETS SURFACES MENISCUS MORPHOLOGY ANGLES REGION
DOI	10.1016/j.ijheatmasstransfer.2016.11.041
英文摘要	To understand the thin film evaporation in a partial wetting system, water morphology near the receding contact line driven by evaporation has been investigated experimentally. A state-of-the-art tapping mode atomic force microscopy (TM-AFM) was used to obtain the nanoscale film profile. The test section first reached equilibrium in an enclosed chamber. Then a small amount of heat was supplied to increase the gas temperature to achieve an environmental heating. The droplet was evaporating and the receding velocity of the contact line was below 20 nm/s. The film profiles were found following the macroscopic profile, which was about linear, till about 2 rim thickness from the contact line which was already the limitation of the measurement. The results indicate that the microscopic contact angle at nanoscale was approximately equal to the optically detected macroscopic contact angle under this weak environmental heating. (C) 2016 Elsevier Ltd. All rights reserved.; Natural Science Foundation of China [91334110, 51276003]; SCI(E); ARTICLE; 1-5; 107
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/474432]
专题	工学院
推荐引用方式 GB/T 7714	Mehrizi, Abbasali Abouei,Wang, Hao. Evaporating thin film profile near the contact line of a partially wetting water droplet under environmental heating[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2017.
APA	Mehrizi, Abbasali Abouei,&Wang, Hao.(2017).Evaporating thin film profile near the contact line of a partially wetting water droplet under environmental heating.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER.
MLA	Mehrizi, Abbasali Abouei,et al."Evaporating thin film profile near the contact line of a partially wetting water droplet under environmental heating".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2017).