Equilibrium configurations of hard spheres in a cylindrical harmonic potential

被引：10

作者：

Winkelmann, J. ^{[1
]}

Mughal, A. ^{[2
]}

Weaire, D. ^{[1
]}

Hutzler, S. ^{[1
]}

机构：

[1] Univ Dublin, Trinity Coll Dublin, Sch Phys, Dublin, Ireland

[2] Aberystwyth Univ, Dept Math, Penglais Aberystwyth SY23 3BZ, Ceredigion, Wales

来源：

EPL | 2019年 / 127卷 / 04期

基金：

英国工程与自然科学研究理事会; 爱尔兰科学基金会;

关键词：

D O I：

10.1209/0295-5075/127/44002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A line of hard spheres confined by a transverse harmonic potential, with hard walls at its ends, exhibits a variety of buckled structures as it is compressed longitudinally. Here we show that these may be conveniently observed in a rotating liquid-filled tube (originally introduced by Lee et al. (Adv. Mater., 29 (2017) 1704274) to assemble ordered three-dimensional structures at higher compressions). The corresponding theoretical model is transparent and easily investigated numerically, as well as by analytic approximations. Hence we explore a wide range of predicted structures occurring via bifurcation, of which the stable ones are also observed in our experiments. Qualitatively similar structures have previously been found in trapped ion systems. Copyright (C) EPLA, 2019

引用

页数：7

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