摘要We study the macroscopic drying patterns of aqueous suspensions of colloidal silica spheres. It was found that convection strength can influence pattern formation. Uniformed films are obtained at weaker convection strength. In addition, we make clear that it is not reasonable to discuss individually the effect of temperature and humidity on the colloid self-assembly. The physical mechanism is that these factors have relationship with the evaporation rate, which can affect the convection strength.
Abstract：We study the macroscopic drying patterns of aqueous suspensions of colloidal silica spheres. It was found that convection strength can influence pattern formation. Uniformed films are obtained at weaker convection strength. In addition, we make clear that it is not reasonable to discuss individually the effect of temperature and humidity on the colloid self-assembly. The physical mechanism is that these factors have relationship with the evaporation rate, which can affect the convection strength.
(Scanning electron microscopy (SEM) (including EBIC))
引用本文:
MA Wen-Jie;WANG Yu-Ren;LAN Ding. Role of Convection Flow on the Pattern Formation in the Drying Process of Colloidal Suspension[J]. 中国物理快报, 2008, 25(4): 1351-1354.
MA Wen-Jie, WANG Yu-Ren, LAN Ding. Role of Convection Flow on the Pattern Formation in the Drying Process of Colloidal Suspension. Chin. Phys. Lett., 2008, 25(4): 1351-1354.
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2008, Vol. 25 
