The thermal conductivity of clustered nanocolloids
The thermal conductivity of clustered nanocolloids
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DOI：
10.1063/1.4880975
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发表时间：
2014-06-01
期刊：
影响因子：
6.1
通讯作者：
Matsoukas, Themis
中科院分区：
文献类型：
--
作者：
Lotfizadeh, Saba;Desai, Tapan;Matsoukas, Themis
我们使用硅烷处理的二氧化硅量化了团簇对胶体分散体导热率的影响，该系统经过精心设计，可在良好控制的条件下表现出可逆的团簇。我们证明热导率随着团簇尺寸单调增加，并且跨越麦克斯韦理论的两个极限之间的整个范围。数值模拟证实的结果表明，胶体分散体的导热率大幅提高是可能的，但完全在经典理论的预测之内。 (C) 2014 年作者。除非另有说明，所有文章内容均根据 Creative Commons Attribution 3.0 Unported License 获得许可。
We quantify the effect of clustering on the thermal conductivity of colloidal dispersions using silane-treated silica, a system engineered to exhibit reversible clustering under well-controlled conditions. We show that the thermal conductivity increases monotonically with cluster size and spans the entire range between the two limits of Maxwell's theory. The results, corroborated by numerical simulation, demonstrate that large increases of the thermal conductivity of colloidal dispersions are possible, yet fully within the predictions of classical theory. (C) 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.