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首页> 外文期刊>Journal of Crystal Growth >The role of fluid flow and convective steering during the assembly of colloidal crystals
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The role of fluid flow and convective steering during the assembly of colloidal crystals

机译：胶体晶体组装过程中流体流动和对流转向的作用

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Three-dimensional computations of steady flows directed toward the (111) plane of a face-centered cubic (fcc) packing of spheres are carried out to assess the convective steering hypothesis, which posits that solvent flow could play a role in the assembly of colloidal crystals. The computations clearly show the kinematics of flows into and through the packing and clarify the influences of fluid inertia and particle arrangement. Results from the computations accurately describe the outcome of macroscopic experiments and are consistent with a network model applied to the microscopic, colloidal system. For the geometry considered here, flows are predicted to direct over 20% more fluid into selected positions along the surface of the packing and reinforce the tendency for ordering newly growing layers with fcc symmetry.
机译：进行了流向面心立方（fcc）堆积的（111）平面的稳定流的三维计算，以评估对流转向假设，该假设认为溶剂流可能在胶体组装中起作用晶体。这些计算清楚地显示了流入和流过填料的运动学，并阐明了流体惯性和颗粒排列的影响。计算结果准确地描述了宏观实验的结果，并且与应用于微观胶体系统的网络模型一致。对于此处考虑的几何形状，预计流动将使更多的20％以上的流体沿着填料表面进入选定的位置，并增强以fcc对称性排列新生长的层的趋势。

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