Floating behavior of hydrophobic glass spheres

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	Floating behavior of hydrophobic glass spheres
	Zhou F(周峰); Wang XL(王晓龙); Zhou F(周峰)
刊名	Journal of Colloid and Interface Science
	2009
卷号	336 页码:743-749
关键词	Floating Hydrophobic Buoyancy force Surface tension
ISSN号	0021-9797
通讯作者	周峰
中文摘要	When a hydrophobic solid sphere is ﬂoating on water or salt solutions with different concentrations, it is at equilibrium under the impact of gravity, buoyancy force, and curvature force, the component of surface tension in the vertical direction.We have changed the diameters of the spheres and the concentrations of the two selected salts, NaCl and NaNO3, to study the ﬂoating behaviors of these spheres and the contri- butions of surface tension and buoyancy force to their ﬂoatation. Generally speaking, the surface tension plays a more important role than the buoyancy force when the gravity is small, but the buoyancy force plays an identical or a more important role when the spheres are big enough. The wettability of the spheres signiﬁcantly inﬂuences the height below the contact perimeter especially in salt solutions. The theoretical calculation meniscus slope angles at the sphere three-phase contact line are in agreement with experimental results.
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	“Hundred Talents Program” of Chinese Academy of Sciences;the key project of NSFC (50835009;20804055)
语种	英语
WOS记录号	WOS:000267671400049
公开日期	2012-11-13
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/2064]
专题	兰州化学物理研究所_固体润滑国家重点实验室
通讯作者	Zhou F(周峰); Zhou F(周峰)
推荐引用方式 GB/T 7714	Zhou F,Wang XL,Zhou F. Floating behavior of hydrophobic glass spheres[J]. Journal of Colloid and Interface Science,2009,336:743-749.
APA	周峰,王晓龙,&周峰.(2009).Floating behavior of hydrophobic glass spheres.Journal of Colloid and Interface Science,336,743-749.
MLA	周峰,et al."Floating behavior of hydrophobic glass spheres".Journal of Colloid and Interface Science 336(2009):743-749.