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arXiv 0908.3279cond-mat.soft
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胶体粒子的涨落相互作用

Fluctuation interactions of colloidal particles

T. Ocampo-Delgado, B. Ivlev

摘要:

对于带相同电荷的胶体粒子,当粒子间距离大于德拜屏蔽长度时,它们之间存在两种吸引机制。其中之一是传统的范德华吸引力,第二个是由粒子位置的热涨落介导的吸引机制。后者与流体运动产生的粒子的有效可变质量(欧拉质量)有关。最强的吸引势(直到温度T的值)对应于不带电粒子和相对大的德拜屏蔽长度的情况。在这种情况下,第三种吸引机制进入了游戏。它是由流体密度的热波动介导的。

英文摘要:

For like charged colloidal particles two mechanisms of attraction between them survive when the interparticle distance is larger than the Debye screening length. One of them is the conventional van der Waals attraction and the second one is the attraction mechanism mediated by thermal fluctuations of particle positions. The latter is related to an effective variable mass (Euler mass) of the particle produced by a fluid motion. The most stronger attraction potential (up to the value of temperature T) corresponds to a situation of uncharged particles and a relatively large Debye screening length. In this case the third mechanism of attraction enters the game. It is mediated by thermal fluctuations of a fluid density.

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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