在球体和棒的密集混合物中的耗尽力
Jorge J Pedrozo-Romero1, Gabriel Pérez-Ángel1
1CINVESTAV Unidad Mérida, Departamento de Física Aplicada, A.P. 73 "Cordemex," 97310 Mérida, Yucatán, Mexico.
The Journal of chemical physics
|April 1, 2024
概括
我们在球体和棒的模拟中分析了耗尽力. 我们的发现揭示了球体之间的复杂的吸引力和排斥力,受棒粒子相互作用和排序的影响.
科学领域:
- *软物质物理学 *软物质物理学
- * 计算化学 计算机化学
- * 统计力学 统计力学
背景情况:
- * 耗尽力在体系统中至关重要,影响相位行为和结构.
- * 了解球体和棒的二元混合中的这些力对于设计新型材料至关重要.
- *以前的模型往往简化了由棒等异质粒子产生的复杂相互作用.
研究的目的:
- * 用分子动力学模拟来量化评估二元混合物中的球体与棒之间的耗尽力.
- * 开发和验证一个有效的力模型,用于简化模拟.
- * 调查棒颗粒定向和排序对耗尽力的作用.
主要方法:
- * 执行了不同密度的球体和棒的二元混合物的分子动力学模拟.
- * 采用最小平方匹配算法来提取有效的耗尽力.
- *通过将双相对应函数与全系统模拟进行比较,并分析角相对应,验证了有效力.
主要成果:
- * 在球体接近时,由于杆子旋转受到限制,确定了一个浅,线性吸引力坡道.
- * 在较小的球间距离 (小于杆径) 观察到更强的吸引力,并在杆厚度处观察到一个排斥屏障.
- * 有效和全系统对对相关函数之间的优异一致性证实了力模型的准确性.
- * 检测到高密度的棒的新兴局部阴性排序,可能会影响力精度.
结论:
- *评估的有效力准确地捕捉了通过杆介导的球体之间的复杂耗尽相互作用.
- *棒粒子定向和集体排序对耗尽力和系统行为产生重大影响.
- * 开发的模型提供了一种计算效率高的方法来研究这些系统,这对材料科学有潜在的影响.
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