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Role of Convection Flow on the Pattern Formation in the Drying Process of Colloidal Suspension |
MA Wen-Jie;WANG Yu-Ren;LAN Ding |
National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080 |
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Cite this article: |
MA Wen-Jie, WANG Yu-Ren, LAN Ding 2008 Chin. Phys. Lett. 25 1351-1354 |
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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.
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Keywords:
47.20.Ma
47.54.-r
68.37.Hk
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Received: 10 December 2007
Published: 31 March 2008
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PACS: |
47.20.Ma
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(Interfacial instabilities (e.g., Rayleigh-Taylor))
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47.54.-r
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(Pattern selection; pattern formation)
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68.37.Hk
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(Scanning electron microscopy (SEM) (including EBIC))
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