|
|||||
|
|
Influence of Gravity on Structure of Colloidal Crystal Using Simulated Microgravity |
|
| Authors: | Lei Liu Jie Wang Sheng-hua Xu Zhi-wei Sun and Jing-tong Wang |
| Institution: | National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;Department of Physics, Southern University and A&M College, Baton Rouge, LA 70813, USA |
| Abstract: | 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 thecolloidal crystals. |
| Keywords: | Colloidal crystal Microgravity Density-match Lattice constant |
| 点击此处可从《化学物理学报》浏览原始摘要信息 | |
| 点击此处可从《化学物理学报》下载免费的PDF全文 | |