通过碳/化异管的界面空隙缺陷进行热传输调节
Yun Dong1, Hao Cheng1, Yusong Ding2
1School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730050, China.
Langmuir : the ACS journal of surfaces and colloids
|August 21, 2025
概括
碳/化异构管的空隙缺陷显著降低了界面热导电性 (ITC). 空缺具有更强的效果,影响热管理的声子传输和局部化.
科学领域:
- 材料科学
- 凝聚物质物理学
- 纳米技术
背景情况:
- 在一维的异构结构中,热传递调节至关重要.
- 空位缺陷对界面热导电性 (ITC) 的影响尚不清楚.
研究的目的:
- 调查空位缺陷对碳/化物异构管 (CBNNT) 的ITC的影响.
- 阐明缺陷诱导的热传输调节背后的原子尺度机制.
主要方法:
- 在CBNNT中模拟空缺缺陷的第一原则计算.
- 用光谱热电流分析量化声子传输.
- 用极化解决的分解来分析语音模式的贡献.
主要成果:
- 在CBNNT中,空缺缺陷显著降低ITC,N空缺显示比C空缺更大的减少.
- 状态重叠的格子扭曲和减少的声子密度导致了增强的声子定位.
- 外平面音声模式对于接口传热至关重要,并且对缺陷敏感.
- 增加温度通过增强声子激发和不弹性散射来改善ITC.
结论:
- 在CBNNT中,空位缺陷严重损害了接口热传输.
- 了解缺陷与声子相互作用是设计先进的热管理材料的关键.
- 温度在调节缺陷接口的热传输中起着至关重要的作用.
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