Ramsteiner I B, Jensen K E, Weitz D A, Spaepen F
School of Engineering and Applied Sciences, Harvard University, 9 Oxford Street, Cambridge, Massachusetts 02138, USA.
Phys Rev E Stat Nonlin Soft Matter Phys. 2009 Jan;79(1 Pt 1):011403. doi: 10.1103/PhysRevE.79.011403. Epub 2009 Jan 21.
We present a confocal microscopy study of 1.55 microm monodisperse silica hard spheres as they sediment and crystallize at the bottom wall of a container. If the particles sediment onto a feature less flat wall, the two bottom layers crystallize simultaneously and layerwise growth follows. If the wall is replaced by a hexagonal template, only layerwise growth occurs. Our results complement earlier numerical simulations and experiments on other colloidal systems.
我们展示了一项关于1.55微米单分散二氧化硅硬球在容器底部壁面沉降和结晶过程的共聚焦显微镜研究。如果颗粒沉降到无特征的平坦壁面上，底部两层会同时结晶并随后进行层状生长。如果将壁面替换为六边形模板，则只会发生层状生长。我们的结果补充了早期关于其他胶体系统的数值模拟和实验。
