4.8 Article

Thermal Conductivity Enhancement in MoS2 under Extreme Strain

期刊

PHYSICAL REVIEW LETTERS
卷 122, 期 15, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.122.155901

关键词

-

资金

  1. National Science Foundation (NASCENT) [EEC-1160494]
  2. National Science Foundation (CAREER) [CBET-1351881, CBET-1707080]
  3. Department of Energy (SBIR/STTR) [DE-SC0013178]
  4. DOD_ Army [W911NF-161-0559]
  5. DST Nanomission
  6. U.S. Department of Energy (DOE) [DE-SC0013178] Funding Source: U.S. Department of Energy (DOE)

向作者/读者索取更多资源

Because of their weak interlayer bonding, van der Waals (vdW) solids are very sensitive to external stimuli such as strain. Experimental studies of strain tuning of thermal properties in vdW solids have not yet been reported. Under similar to 9% cross-plane compressive strain created by hydrostatic pressure in a diamond anvil cell, we observed an increase of cross-plane thermal conductivity in bulk MoS2 from 3.5 to about 25 W m(-1) K-1, measured with a picosecond transient thermoreflectance technique. First-principles calculations and coherent phonon spectroscopy experiments reveal that this drastic change arises from the strain-enhanced interlayer interaction, heavily modified phonon dispersions, and decrease in phonon lifetimes due to the unbundling effect along the cross-plane direction. The contribution from the change of electronic thermal conductivity is negligible. Our results suggest possible parallel tuning of structural, thermal, and electrical properties of vdW solids with strain in multiphysics devices.

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。

评论

主要评分

4.8
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据