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arXiv 1102.4918cond-mat.soft
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高电荷胶体悬浮液Zeta电位的测定

Determination of the zeta potential for highly charged colloidal suspensions

Giovanni Giupponi, Ignacio Pagonabarraga

摘要:

我们使用混合介观模型计算嵌入胶体悬浮液中的带电粒子的表面静电势或zeta电位$ζ$。我们表明,对于弱扰动电场,在电泳过程中的稳态下获得的$ζ$的值是统计上无法区分的热力学平衡从$ζ$。我们量化了反离子浓度对$ζ$的影响。我们还评估了相关的晶格分辨率的计算$ζ$和讨论如何确定有效的静电半径。

英文摘要:

We compute the electrostatic potential at the surface, or zeta potential $ζ$, of a charged particle embedded in a colloidal suspension using a hybrid mesoscopic model. We show that for weakly perturbing electric fields, the value of $ζ$ obtained at steady state during electrophoresis is statistically indistinguishable from $ζ$ in thermodynamic equilibrium. We quantify the effect of counterions concentration on $ζ$. We also evaluate the relevance of the lattice resolution for the calculation of $ζ$ and discuss how to identify the effective electrostatic radius.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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