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Experimental Evidence for Algebraic Double-Layer Forces.
Langmuir ( IF 3.7 ) Pub Date : 2019-12-31 , DOI: 10.1021/acs.langmuir.9b03077
Biljana Stojimirović 1 , Mark Vis 2 , Remco Tuinier 2, 3 , Albert P Philipse 3 , Gregor Trefalt 1
Affiliation  

According to conventional wisdom, electric double-layer forces normally decay exponentially with separation distance. Here, we present experimental evidence of algebraically decaying double-layer interactions. We show that algebraic interactions arise in both strongly overlapping as well as counterion-only regimes, albeit the evidence is less clear for the former regime. In both of these cases, the disjoining pressure profile assumes an inverse square distance dependence. At small separation distances, another algebraic regime is recovered. In this regime, the pressure decays as the inverse of separation distance.

中文翻译:

代数双层力的实验证据。

根据传统观点,双层电力通常随着分离距离呈指数衰减。在这里,我们提供代数递减的双层相互作用的实验证据。我们表明,代数相互作用在强烈重叠的以及仅抗衡离子的体系中均会出现,尽管前一种体系的证据尚不明确。在这两种情况下,分离的压力曲线都假设平方距离成反比。在较小的分隔距离处,可以恢复另一种代数形式。在这种情况下,压力随着分离距离的倒数而衰减。
更新日期:2019-12-31
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