粘性球体的二元混合物中的相位分离
D C Thakur1, Jalim Singh1, A V Anil Kumar1
1School of Physical Sciences, National Institute of Science Education and Research, HBNI, Jatni, Bhubaneswar 752050, India.
The Journal of chemical physics
|July 9, 2025
概括
吸引力相互作用的范围影响了二维二进制系统中的相位分离. 较短的范围可以导致快速冷却后的复杂混合和玻璃状状态,而不是较慢的冷却或较长的相互作用范围.
科学领域:
- 物理化学 物理化学
- 材料科学 材料科学 材料科学
- 计算物理 计算物理
背景情况:
- 二元系统中的相位分离对于材料特性至关重要.
- 了解相互作用范围对相位行为的影响是关键.
- 2D系统为研究基本相互作用提供了一个简化的模型.
研究的目的:
- 系统地研究吸引力潜力的范围如何影响二维二进制系统中的相位分离.
- 探索冷却速度对相位行为和新兴状态的影响.
- 为了确定相互作用范围在相位分离过程中的组件排序中的作用.
主要方法:
- 使用了兰格温动力学模拟.
- 系统地改变了吸引力相互作用的范围,保持潜在深度不变.
- 系统从高温冷却到低温冷却在不同的火速度 (快速和缓慢).
主要成果:
- 接近粘球极限 (较短范围) 在较低温度下诱导相位分离.
- 快速火导致再冷却后重新混合和玻璃状状态.
- 缓慢火防止了重新进入的混合物;这两种组件在相位分离时都有利于晶体配置.
- 较大的相互作用范围没有表现出这种相位分离行为.
- 快速火导致一个组件结晶,而另一个组件在脱过程中保持无序.
结论:
- 吸引力潜力的范围是控制二维二进制系统中相位分离和新兴状态的关键参数.
- 冷却速率显著影响最终状态,在特定条件下使回流物混合和玻璃状行为成为可能.
- 阶段分离期间的组件排序取决于相互作用范围和火率.
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