Thermal transport across atomic-layer material interfaces

Nanotechnology Reviews

卷:4

Zhang Jingchao¹  Tang Xiaoduan²  Wang Xinwei³  Xu Shen³ 

[1] ;

[2] Department of Engineering, Thrustmaster of Texas, Inc., Houston, TX 77065, USA;

[3] Department of Mechanical Engineering, Iowa State University, Ames, IA 50010, USA;

关键词: 2d atomic-layer;    graphene;    interface;    raman spectroscopy;    thermal resistance;   

DOI  :  10.1515/ntrev-2014-0024

来源: DOAJ

【 摘 要 】

Emergence of two-dimensional (2D) materials with atomic-layer structures, such as graphene and MoS2, which have excellent physical properties, provides the opportunity of substituting silicon-based micro/nanoelectronics. An important issue before large-scale applications is the heat dissipation performance of these materials, especially when they are supported on a substrate, as in most scenarios. Thermal transport across the atomic-layer interface is essential to the heat dissipation of 2D materials due to the extremely large contact area with the substrate, when compared with their atomic-scale cross-sections. Therefore, the understanding of the interfacial thermal transport is important, but the characterization is very challenging due to the limitations for temperature/thermal probing of these atomic-layer structures. In this review, widely used characterization techniques for experimental characterization as well as their results are presented. Emphasis is placed on the Raman-based technology for nm and sub-nm temperature differential characterization. Then, we present physical understanding through theoretical analysis and molecular dynamics. A few representative works about the molecular dynamics studies, including our studies on the size effect and rectification phenomenon of the graphene-Si interfaces are presented. Challenges as well as opportunities in the thermal transport study of atomic-layer structures are discussed. Though many works have been reported, there is still much room in both the development of experimental techniques as well as atomic-scale simulations for a clearer understanding of the physical fundamentals of thermal transport across the atomic-layer interfaces, considering the remarkable complexity of physical/chemical conditions at the interface.

【 授权许可】

Unknown