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Observation of Diffusion Process of a Water Droplet Immersed in Protein Solution in Microgravity |
| DUAN Li;SUN Zhi-Wei;KANG Qi;CUI Hai-Liang;LIN Hai;HU Liang;XU Sheng-Hua;LI Gen-Pei |
| National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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DUAN Li, SUN Zhi-Wei, KANG Qi et al 2007 Chin. Phys. Lett. 24 3358-3361 |
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Abstract Pure liquid--liquid diffusion driven by concentration gradients is hard to study in a normal gravity environment since convection and sedimentation also contribute to the mass transfer process. We employ a Mach--Zehnder interferometer to monitor the mass transfer process of a water droplet in EAFP protein solution under microgravity condition provided by the Satellite Shi Jian No 8. A series of the evolution charts of mass distribution during the diffusion process of the liquid droplet are presented and the relevant diffusion coefficient is determined.
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06.30.Dr
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Received: 03 September 2007
Published: 03 December 2007
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