Number density distribution of small particles around a large particle: Structural analysis of colloidal solution
Number density distribution of small particles around a large particle: Structural analysis of colloidal solution
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大颗粒周围小颗粒的数密度分布：胶体溶液的结构分析
DOI：
10.1021/acs.langmuir.6b02628
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发表时间：
2016
期刊：
影响因子：
3.9
通讯作者：
Tetsuo Sakka
中科院分区：
文献类型：
--
作者：
Ken-ichi Amano;Mitsuhiro Iwaki;Kota Hashimoto;Kazuhiro Fukami;Naoya Nishi;Ohgi Takahashi;Tetsuo Sakka
一些胶体悬浮液含有两种类型的颗粒，即小颗粒和大颗粒，以提高润滑能力、光吸收率等。通常对这种胶体悬浮液进行结构和化学分析，以了解它们的性质。在结构分析研究中，观察大颗粒（gLS）周围的小颗粒的数量密度分布是困难的，因为这些颗粒通过布朗运动在胶体悬浮液中随机移动。我们利用线光镊（LOT）测量两个大胶体粒子间的平均力势（ΦLL）的数据得到LS。我们提出了一个理论，转换ΦLLintogLS。文中详细介绍了变换原理，并进行了实验验证.我们证明了第一次，LOT可用于胶体悬浮液的结构分析。将LOT与变换理论相结合，可以方便地对胶体悬浮液进行结构分析，这对了解胶体性质和开发胶体产品都具有重要意义。
Some colloidal suspensions contain two types of particlessmall and large particlesto improve the lubricating ability, light absorptivity, and so forth. Structural and chemical analyses of such colloidal suspensions are often performed to understand their properties. In a structural analysis study, the observation of the number density distribution of small particles around a large particle (gLS) is difficult because these particles are randomly moving within the colloidal suspension by Brownian motion. We obtaingLSusing the data from a line optical tweezer (LOT) that can measure the potential of mean force between two large colloidal particles (ΦLL). We propose a theory that transforms ΦLLintogLS. The transform theory is explained in detail and tested. We demonstrate for the first time that LOT can be used for the structural analysis of a colloidal suspension. LOT combined with the transform theory will facilitate structural analyses of the colloidal suspensions, which is important for both understanding colloidal properties and developing colloidal products.