Influence of Gravity on Structure of Colloidal Crystal Using Simulated Microgravity
Influence of Gravity on Structure of Colloidal Crystal Using Simulated Microgravity作者机构：. National Microgravity Laboratory Institute of Mechanics Chinese Academy of Sciences BerlinE 100190 China Department of Physics Southern University and A&M College Baton Rouge LA 70813 USA
出 版 物：《Chinese Journal of Chemical Physics》 (化学物理学报（英文）)
年 卷 期：2009年第22卷第1期
页 面：41-45页
核心收录：
基 金：ACKNOWLEDGMENTS This work was supported by the National Natural Science Foundation of China (No.20473108 No.10672173 and No.10432060) and the "Chuang-xin Project" of the Chinese Academy of Sciences
主 题：Colloidal crystal Microgravity Density-match Lattice constant
摘 要：Liquid mixtures of water and deuterium oxide as the liquid phase, were used to match the density of charged colloidal particles. Kossel diffraction method was used to detect the crystal structures. The experiments under the density-matched （g=0） and unmatched （g=1） conditions are compared to examine the influence of gravity on the crystal structures formed by self-assembly of 110 nm （in diameter） polystyrene microspheres. The result shows that the gravity tends to make the lattice constants of colloidal crystals smaller at lower positions, which indicates that the effect of gravity should be taken into account in the study of the colloidal crystals.
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