Confinement as a tool to probe amorphous order.
Confinement as a tool to probe amorphous order.
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限制作为探索无定形秩序的工具。
DOI：
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发表时间：
2013
影响因子：
8.6
通讯作者：
G. Biroli
中科院分区：
文献类型：
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作者：
C. Cammarota;G. Gradenigo;G. Biroli
本文以无规一级相变理论为框架，研究了玻璃态液体的禁闭效应。我们表明，特征长度尺度以上的限制效应变得可以忽略不计的是相关的点到设置长度尺度引入测量的空间范围内的非晶秩序在过冷液体。通过限制在该特征尺寸以下，系统变成玻璃。最后，对于非常小的尺寸，边界的影响是如此之强，以至于任何集体的玻璃态行为都被消除了。我们澄清的物理行为之间的相似性和差异引起的限制和钉扎粒子外的球形腔（协议引入测量点集长度）。最后，我们讨论可能的数值和实验测试我们的预测。
We study the effect of confinement on glassy liquids using random first order transition theory as a framework. We show that the characteristic length scale above which confinement effects become negligible is related to the point-to-set length scale introduced to measure the spatial extent of amorphous order in supercooled liquids. By confining below this characteristic size, the system becomes a glass. Eventually, for very small sizes, the effect of the boundary is so strong that any collective glassy behavior is wiped out. We clarify similarities and differences between the physical behaviors induced by confinement and by pinning particles outside a spherical cavity (the protocol introduced to measure the point-to-set length). Finally, we discuss possible numerical and experimental tests of our predictions.