期刊
PHYSICAL REVIEW B
卷 98, 期 24, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.98.245420
关键词
-
资金
- National Natural Science Foundation of China [51576076, 51711540031]
- Natural Science Foundation of Hubei Province [2017CFA046]
- Fundamental Research Funds for the Central Universities [2016YXZD006]
Wave effects of phonons play an important role in modulating thermal transport in nanostructures. In this paper, we calculated the thermal conductivity of a species of graphene nanoribbon phononic metamaterials (GNPM), pillared graphene nanoribbon, through nonequilibrium molecular dynamics. Interestingly, it is found that the thermal conductivity of GNPM is enhanced by isotopic resonance at pillars, which is in contrast to the reduction by isotopic doping. Furthermore, mode-analysis and atomic Green's function calculations reveal that the mechanism of enhancement originates from the broken hybridization. Additionally, we calculated the effects of the ribbon's width and pillars' height on the thermal conductivity of GNPM. The isotopic resonance provides a mechanism to manipulate phonon transport in nanostructures.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据