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首页> 外文期刊>The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical >Outsized Amplitude-Modulated Structure of Very-Long-Range Charge Inversions in Model Colloidal Dispersions
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Outsized Amplitude-Modulated Structure of Very-Long-Range Charge Inversions in Model Colloidal Dispersions

机译：模型胶体分散体中的远程电荷逆转的超出幅度调节结构

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摘要

Most theoretical and simulation studies on charged suspensions are at infinite dilution and are focused on the electrolyte structure around one or two isolated particles. Some classic experimental studies with latex particle solutions exhibit interesting phenomenology which imply very-long-range correlations. Here, we apply an integral equation theory to a model charged macroion suspension, at finite volume fraction, and find an amplitude-modulated charge inversion structure, with outsized amplitudes and of very-long-range extension. These inversions are different from the standard charge inversions in that they occur at finite macroions' volume fraction, far away from the central macroion, are outsized, and increase, not decrease, with increasing particle charge and distance to the central particle, which is indicative of long-range correlations. We find our results to be in agreement with our Monte Carlo simulations and qualitatively consistent with existing experimental results.
机译：对带电悬浮液的大多数理论和模拟研究是无限稀释的，并聚焦在一个或两个分离的颗粒周围的电解质结构上。 乳胶颗粒溶液的一些经典实验研究表现出有趣的现象学意味着非常远的相关性。 这里，我们将整体方程理论应用于有限体积分数的模型带电宏观悬架，并找到幅度调制的电荷反转结构，具有超出幅度和非常远的扩展。 这些逆与标准电荷反转的不同之处在于它们发生在有限宏观的体积分数中，远离中央宏观，并且增加，不降低，不断增加粒子电荷和与中央粒子的距离，这是指示性的 远程相关性。 我们发现我们的结果与我们的Monte Carlo仿真一致，与现有的实验结果定得质量符合。

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