碳基材料与AIREBO和ZBL联合潜力的短距离相互作用的描述
Jing Li1, Tan Shi1, Yichao Sun2,3,4
1School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China.
Nanomaterials (Basel, Switzerland)
|September 13, 2024
概括
准确模拟离子辐射效应需要精确的短距离原子相互作用. 将Ziegler-Biersack-Littmark (ZBL) 与适应性分子间反应实证键序 (AIREBO) 潜能集成,可以改善碳材料的模拟,影响缺陷生成.
科学领域:
- 材料科学 材料科学 材料科学
- 计算物理 计算物理
- 纳米技术 纳米技术
背景情况:
- 准确模拟原子相互作用对于理解离子辐射效应至关重要.
- 离子修饰技术依赖于对短距离力量的精确建模.
- 碳基材料是各种先进应用中的关键.
研究的目的:
- 为碳基材料开发短距离原子相互作用的准确描述.
- 将齐格勒-比尔萨克-利特马克 (ZBL) 潜力与适应性分子间反应性实证键序 (AIREBO) 潜力集成.
- 研究这种综合潜力的对模拟辐射效应的影响.
主要方法:
- 开发了ZBL和AIREBO潜力的顺利整合.
- 使用二元体,四面体和石墨烯结构分析了潜在能量,力和AIREBO组件 (REBO,LJ,扭矩).
- 进行了C-C二极管和散装石墨碰撞过程的分子动力学模拟.
主要成果:
- 集成的ZBL-AIREBO潜力准确地描述了碳材料中的短距离相互作用.
- REBO组件主导排斥,LJ处理长距离相互作用,扭力能量有助于短距离排斥.
- 对石墨中1 keV和10 keV初级模拟原子的模拟显示了对缺陷数量和形态学的重大影响.
结论:
- 采用ZBL-AIREBO潜能集成是有效的在辐射下对碳基材料进行建模.
- 准确的短距离相互作用描述对于预测辐射诱导的缺陷至关重要.
- 这种方法增强了对离子改性技术的模拟.
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