Institut für Theoretische Physik II: Weiche Materie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany.
Phys Rev Lett. 2012 Nov 21;109(21):218301. doi: 10.1103/PhysRevLett.109.218301.
We show that hard spheres confined between two parallel hard plates pack denser with periodic adaptive prismatic structures which are composed of alternating prisms of spheres. The internal structure of the prisms adapts to the slit height which results in close packings for a range of plate separations, just above the distance where three intersecting square layers fit exactly between the plates. The adaptive prism phases are also observed in real-space experiments on confined sterically stabilized colloids and in Monte Carlo simulations at finite pressure.
我们表明，被两个平行硬平板限制的硬球通过周期性自适应棱柱结构更紧密堆积，这些结构由交替的球体棱柱组成。棱柱的内部结构适应狭缝高度，从而在一系列板分离处产生紧密堆积，刚好在三个相交的正方形层完全适合板之间的距离之上。在受限的空间稳定胶体的实空间实验和有限压力的蒙特卡罗模拟中也观察到了自适应棱柱相。
