Phase separation in thin films: Effect of temperature gradients

Phase separation in thin films: Effect of temperature gradients
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DOI:
10.1209/0295-5075/103/66003
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发表时间:
2013-09-01
期刊:
EPL
影响因子:
1.8
通讯作者:
Binder, Kurt
Binder, Kurt
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Jaiswal, Prabhat K.;Puri, Sanjay;Binder, Kurt

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我们研究了限制在厚度为 D 的薄膜中且具有温度梯度的二元 (AB) 混合物的相分离动力学。从川崎交换动力学 Ising 模型开始,我们使用主方程方法系统地推导出该系统的 Cahn-Hilliard 模型的扩展。我们研究了垂直于具有“中性”(不偏向 A 或 B)表面的薄膜的温度梯度的影响。我们强调了相分离和温度梯度相互作用所产生的丰富现象学和模式动力学。版权所有 (C) EPLA,2013
We study the phase-separation kinetics of a binary (AB) mixture confined in a thin film of thickness D with a temperature gradient. Starting from a Kawasaki-exchange kinetic Ising model, we use a master-equation approach to systematically derive an extension of the Cahn-Hilliard model for this system. We study the effect of temperature gradients perpendicular to the film with "neutral" (no preference for either A or B) surfaces. We highlight the rich phenomenology and pattern dynamics which arises from the interplay of phase separation and the temperature gradient. Copyright (C) EPLA, 2013