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arXiv 1702.00634cond-mat.softcond-mat.mtrl-scicond-mat.stat-mechphysics.bio-phphysics.chem-ph
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斑片表面的静电学

Electrostatics of Patchy Surfaces

Ram M. Adar, David Andelman, Haim Diamant

摘要:

在胶体、生物和电化学系统的研究中,通常将表面、大分子和电极视为均匀带电的。这种简化的方法在大多数情况下被证明是成功的,但未能描述广泛的非均匀带电表面通常用于实验。例如,最近的实验已经揭示了整个中性表面之间的长程吸引力,局部带电的马赛克状结构的正电荷和负电荷域("补丁")。在这里,我们回顾实验和理论研究解决不均匀带电表面的稳定性,它们在溶液中的离子强度,以及两个这样的表面之间的相互作用。我们专注于静电学,并强调了在非均匀情况下出现的重要的新物理参数,如最大斑块尺寸和表面间电荷相关性

英文摘要:

In the study of colloidal, biological and electrochemical systems, it is customary to treat surfaces, macromolecules and electrodes as homogeneously charged. This simplified approach is proven successful in most cases, but fails to describe a wide range of heterogeneously charged surfaces commonly used in experiments. For example, recent experiments have revealed a long-range attraction between overall neutral surfaces, locally charged in a mosaic-like structure of positively and negatively charged domains ("patches"). Here we review experimental and theoretical studies addressing the stability of heterogeneously charged surfaces, their ionic strength in solution, and the interaction between two such surfaces. We focus on electrostatics, and highlight the important new physical parameters appearing in the heterogeneous case, such as the largest patch size and inter-surface charge correlations

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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