结合和固定约束对超冷液体中配置约束的影响
1Beijing Normal University, Center for Advanced Quantum Studies, School of Physics and Astronomy, Beijing 100875, China.
Physical review. E
|October 21, 2025
概括
在超冷液体中引入刚性键,增加了配置刚性,模仿像二氧化这样的强液体. 这种方法通过减少不稳定模式幅度来增强约束力.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学是一种材料科学.
- 计算化学是一种计算化学.
背景情况:
- 超冷液体表现出复杂的动力学和独特的机械性能.
- 了解影响液体刚性的因素对于材料设计至关重要.
- 即时正常模式 (INMs) 提供了对液体动态的洞察力.
研究的目的:
- 研究刚性结合约束对超冷液体机械性能的影响.
- 为了比较刚性键的效应与粒子固定作为一种约束形式.
- 分析这些约束如何影响配置刚性和动态.
主要方法:
- 在瞬间正常模式的计算过程中引入刚性键约束.
- 对由此产生的配置约束和刚性的分析.
- 与具有固定粒子的系统进行比较.
主要成果:
- 刚性键约束有效地增加了超冷液体的配置刚性.
- 刚性键的效果与固定粒子的效果相当,考虑到自由度.
- 这两种约束类型都将液体配置转向强液体的行为,以为例.
- 约束通过减少不稳定的正常模式的幅度来增强刚性.
结论:
- 刚性键约束为调整超冷液体的机械性能提供了一种新的方法.
- 这种方法为实现与标准强度液体相似的玻璃性能提供了一条途径.
- 这些发现有助于更深入地了解液态物理和玻璃形成.
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