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COLLOIDAL SELF-ASSEMBLING IN SPACE: RESULTS FROM CHINA SJ-10 RECOVERBLE SATELLITE

机译：空间中的胶体自组装：中国SJ-10可重复卫星的结果

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Colloidal particle system was recognized as an ideal model system to study phase transitions, because compared with atoms, micron sized colloidal particles were large enough and moved sufficiently slow for the direct observation, thus observation of phase change and defect formation process on the "atomic" scale could be achieved. However, the sedimentation of large colloidal particles in gravity resulted in uneven concentration of colloidal systems. It was difficult to obtain direct in-situ observation results with microscope on earth to reveal the relationship among colloidal self-assembling process, local structure changes and colloidal phase transition. In microgravity, on the contrary, sedimentation and buoyancy convection no longer affect the colloidal self-assembling behavior. To study the colloidal self-assembling process in space, we designed Colloidal Material Box (CMB) payload aboard China recoverable SJ-10 satellite, which will be launched in April of 2016. By utilizing CMB facility, a serious of colloidal droplets with controllable sizes could be formed in space. With the vaporization of colloidal droplets, the droplet profile changes and colloidal particle movement in the droplet can be recorded respectively by a normal CCD and a CCD of microscope lens. In this paper, we will systemically introduce the design of CMB payload and the primary space experiment results.
机译：胶体粒子系统被认为是研究相变的理想模型系统，因为与原子相比，微米级的胶体粒子足够大并且移动得足够慢，无法直接观察，因此可以观察“原子”上的相变和缺陷形成过程。规模可以实现。但是，大胶体颗粒在重力作用下的沉降导致胶体系统浓度不均。在地球上用显微镜很难获得直接的原位观察结果，难以揭示胶体自组装过程，局部结构变化和胶体相变之间的关系。相反，在微重力下，沉降和浮力对流不再影响胶体的自组装行为。为了研究空间中的胶体自组装过程，我们设计了将于2016年4月发射的中国可回收SJ-10卫星上的胶体材料箱（CMB）有效载荷。可以在太空中形成随着胶体液滴的汽化，液滴的轮廓变化和胶体颗粒在液滴中的运动可以分别通过普通的CCD和显微镜镜头的CCD来记录。在本文中，我们将系统地介绍CMB有效载荷的设计和主要的空间实验结果。

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