Relaxational dynamics of smectic phases on a curved substrate.
Relaxational dynamics of smectic phases on a curved substrate.
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弯曲基底上近晶相的弛豫动力学。
DOI：
10.1103/physreve.79.031701
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
D. A. Vega
中科院分区：
文献类型：
--
作者：
L. R. Gómez;D. A. Vega
我们研究了二维近晶系统的图案形成的动力学约束躺在一个基板上的正弦地形。我们观察到的缺陷和几何形状之间的耦合，诱导正（负）缺陷的区域上的正（负）高斯曲率的优先位置。对于这里研究的曲率，我们观察到的解约束和自组织的向错对。图案的局部取向和拓扑缺陷的位置可以通过下面的衬底的曲率来精确地控制。因此，长程相互作用所产生的几何形状的基板导致有序的模式与潜在的应用纳米技术。
We study the dynamics of pattern formation of two-dimensional smectic systems constrained to lie on a substrate with sinusoidal topography. We observe a coupling between defects and geometry that induces the preferential location of positive (negative) defects onto regions with positive (negative) Gaussian curvature. For the curvatures studied here we observe unbinding and self-organization of disclination pairs. The local orientation of the pattern and the location of topological defects can be accurately controlled with the curvature of the underlying substrate. Thus, long-range interactions arising from the geometry of the substrate lead to ordered patterns with potential applications to nanotechnology.