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摘要翻译：
我们报道了用共聚焦激光扫描显微镜观察到高电荷聚苯乙烯胶粒在极稀去离子水悬浮液中与单价反离子的稳定结合对。通过对大量悬浮液内部记录的数千幅共焦图像的时间序列分析，我们发现测量到的对电位U(r)有一个长程吸引分量，其井深大于热能。这些观察结果为类似带电胶体粒子在U(r)中存在长程吸引提供了直接而明确的证据。
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英文标题：
《Bound Pairs: Direct Evidence for Long-range Attraction between
Like-Charged Colloids》
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作者：
B.V.R. Tata, P.S. Mohanty, M.C. Valsakumar
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最新提交年份：
2007
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分类信息：
一级分类：Physics 物理学
二级分类：Soft Condensed Matter 软凝聚态物质
分类描述：Membranes, polymers, liquid crystals, glasses, colloids, granular matter
膜，聚合物，液晶，玻璃，胶体，颗粒物质
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一级分类：Physics 物理学
二级分类：Statistical Mechanics 统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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英文摘要：
We report observations of stable bound pairs in very dilute deionized aqueous suspensions of highly charged polystyrene colloidal particles, with monovalent counterions, using a confocal laser scanning microscope. Through an analysis of several thousands of time series of confocal images recorded deep inside the bulk suspension, we find that the measured pair-potential, U(r) has a long-range attractive component with well depths larger than the thermal energy. These observations provide a direct and unequivocal evidence for the existence of long-range attraction in U(r) of like-charged colloidal particles.
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PDF链接：
https://arxiv.org/pdf/711.2883
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