Effect of dispersion medium and dominated evaporation on the pattern formation of colloidal suspension

	Effect of dispersion medium and dominated evaporation on the pattern formation of colloidal suspension
	Ma WJ(马文杰); Wang YR(王育人); Ma WJ; Ma WJ
	2011
会议名称	2011 International Academic Conference on Machinery, Materials Science and Engineering Applications, MMSE 2011
会议日期	JUL 15-16, 2011
通讯作者邮箱	mawenjie81@gmail.com
会议地点	Wuhan, China
关键词	Drying Ethanol Evaporation Liquids Machinery Materials science Phase transitions Suspensions (fluids) Aqueous ethanol Broad-ring pattern Colloid particles Colloidal suspensions Dispersion medium Drying pattern Drying process Evaporation rate Macroscopic pattern Marangoni convection Panasonic Pattern formation Thin liquid layer Uniform films Volume ratio
卷号	228-229
页码	732-736
通讯作者	Ma WJ
中文摘要	We study the effect of dispersion medium and dominated evaporation on the drying process and pattern of thin liquid layer colloidal suspention. Panasonic camera is used to capture the drying process and macroscopic pattern. It is shown that drying patterns are sensitive to the dispersion medium. As the volume ratio of ethanol in aqueous ethanol colloidal suspension increases, the evaporation rate increases, and film in the center becomes smaller and thinner, obvious broad-ring pattern can be observed. We suggest that difference in dispersion medium changes the evaporation rate, which has a direct proportional variation with strength of Marangoni convection. Furthermore, convection strength has great influence on self-assembly of colloid particles and the pattern formation of colloidal suspension. We design two simple experiments to change the evaporation rate and convection strength in order to verify the conclusion above. Broad-ring patterns with spray-like round edge at higher evaporation rate are obtained. Uniform film forms at lower evaporation rate.
收录类别	CPCI-S ; EI
合作状况	国内
产权排序	1 College of Science, Northeast Dianli University, Jilin 132012, China 2 National Microgravity Laboratary, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
会议网址	http://dx.doi.org/10.4028/www.scientific.net/AMR.228-229.732
会议录	MACHINERY, MATERIALS SCIENCE AND ENGINEERING APPLICATIONS, MMSE 2011
会议录出版者	TRANS TECH PUBLICATIONS, P.O. BOX 1254, CLAUSTHAL-ZELLERFELD, D-38670, GERMANY
语种	英语
ISSN号	1022-6680
ISBN号	978-3-03785-111-1
WOS记录号	WOS:000291967100133
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/46830]
专题	力学研究所_国家微重力实验室
通讯作者	Ma WJ; Ma WJ
推荐引用方式 GB/T 7714	Ma WJ,Wang YR,Ma WJ,et al. Effect of dispersion medium and dominated evaporation on the pattern formation of colloidal suspension[C]. 见:2011 International Academic Conference on Machinery, Materials Science and Engineering Applications, MMSE 2011. Wuhan, China. JUL 15-16, 2011.http://dx.doi.org/10.4028/www.scientific.net/AMR.228-229.732.