Improved Procedure on the Microscopic Approach to Determine Colloidal Stability

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	Improved Procedure on the Microscopic Approach to Determine Colloidal Stability
	Sun ZW(孙祉伟); Xu SH(徐升华); Liu J; Li YM; Lou LR; Jie JC(解京昌)
刊名	Journal of Chemical Physics
	2005
通讯作者邮箱	sunzw@imech.ac.cn ; liyinmei@ustc.edu.cn
卷号	122 期号:18 页码:Art.No.184904
ISSN号	0021-9606
通讯作者	Sun, ZW (reprint author), Chinese Acad Sci, Inst Mech, NML, Beijing 100080, Peoples R China.
中文摘要	We present an improved procedure on the approach to determine the stability of polystyrene spheres at microscopic particle levels by means of artificially induced particle collisions with the aid of optical tweezers [J.Chem.Phys. 119, 2399(2003)]. The basic consideration on this new development is that the major contribution to the sticking probability for a particle pair caught into the optical trap for a short period is from its single collision; therefore, if the trapping duration for the pair is taken to be short, the accumulated sticking probability will be a good approximation for the single collision. The experimental procedure associated with this approximation does not resort to exactly controlling the short trapping duration or request the trapping duration correction as previously reported and therefore it is more practical and applicable for broader range of the stability ratio. The experimental results under different electrolyte concentrations by the new procedure are consistent with those from the turbidity measurements.
学科主题	力学
类目[WOS]	Physics, Atomic, Molecular & Chemical
研究领域[WOS]	Physics
收录类别	SCI
语种	英语
WOS记录号	WOS:000229275600081
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/16799]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Sun ZW,Xu SH,Liu J,et al. Improved Procedure on the Microscopic Approach to Determine Colloidal Stability[J]. Journal of Chemical Physics,2005,122(18):Art.No.184904.
APA	孙祉伟,徐升华,Liu J,Li YM,Lou LR,&解京昌.(2005).Improved Procedure on the Microscopic Approach to Determine Colloidal Stability.Journal of Chemical Physics,122(18),Art.No.184904.
MLA	孙祉伟,et al."Improved Procedure on the Microscopic Approach to Determine Colloidal Stability".Journal of Chemical Physics 122.18(2005):Art.No.184904.