Sound-mediated stable configurations for polystyrene particles
Sound-mediated stable configurations for polystyrene particles
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聚苯乙烯颗粒的声介稳定构型
DOI：
10.1103/physreve.96.052604
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发表时间：
2017
影响因子：
2.4
通讯作者：
Liu Zhengyou
中科院分区：
文献类型：
--
作者：
Wang Mudi;Qiu Chunyin;Zhang Shenwei;Han Runzhou;Ke Manzhu;Liu Zhengyou
本文报道了声诱导相互作用力形成的聚苯乙烯粒子的自组织效应的实验观察。实验观察到两种类型的稳定构型：一种是机械平衡，以非零粒子间分离为特征，另一种对应于紧密堆积的装配，这是由聚集的粒子之间的强吸引力产生的。对于前一种涉及两个或三个粒子的情况，最可能的粒子间分离（计算许多独立的初始排列）与理论预测非常吻合。对于后一种情况，最终稳定构型的数量随着粒子数量的增加而增加，并且每种构型的发生概率可以用一个简单的几何模型来解释。
Here we report an experimental observation of the self-organization effect of polystyrene particles formed by acoustically induced interaction forces. Two types of stable configurations are observed experimentally: one is mechanically equilibrium and featured by nonzero interparticle separations, and the other corresponds to a closely packed assembly, which is created by strong attractions among the aggregated particles. For the former case involving two or three particles, the most probable interparticle separations (counted for numerous independent initial arrangements) agree well with the theoretical predictions. For the latter case, the number of the final stable configurations grows with the particle number, and the occurrence probability of each configuration is interpreted by a simple geometric model.