Incompressibility of polydisperse random-close-packed colloidal particles.
Incompressibility of polydisperse random-close-packed colloidal particles.
复制标题
多分散随机密堆积胶体颗粒的不可压缩性。
DOI：
--
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
E. Weeks
中科院分区：
文献类型：
--
作者：
R. Kurita;E. Weeks
我们使用共聚焦显微镜来研究随机紧密堆积的胶体颗粒样品的可压缩性。为此，我们引入了一种算法来估计每个粒子的大小。考虑到它们的大小，我们计算了样品的可压缩性作为波矢Q的函数，发现该可压缩性在Q→0时线性地消失，表明填充结构是不可压缩的。为了正确计算可压缩性，必须考虑颗粒大小。这些结果还表明，实验中的填充是超均匀的。
We use confocal microscopy to study the compressibility of a random-close-packed sample of colloidal particles. To do this, we introduce an algorithm to estimate the size of each particle. Taking into account their sizes, we compute the compressibility of the sample as a function of wave vector q, and find that this compressibility vanishes linearly as q→0, showing that the packing structure is incompressible. The particle sizes must be considered to calculate the compressibility properly. These results also suggest that the experimental packing is hyperuniform.