Thermal transport across atomic-layer material interfaces

Nanotechnology Reviews

article

Yanan Yue¹  Jingchao Zhang²  Xiaoduan Tang³  Shen Xu⁴  Xinwei Wang⁴ 

[1] School of Power and Mechanical Engineering, Wuhan University;Holland Computing Center, University of Nebraska;Department of Engineering, Inc.;Department of Mechanical Engineering, Iowa State University

关键词: 2D atomic-layer;    graphene;    interface;    Raman spectroscopy;    thermal resistance;   

DOI  :  10.1515/ntrev-2014-0024

学科分类：社会科学、人文和艺术（综合）

来源: De Gruyter

【 摘 要 】

Emergence of two-dimensional (2D) materials with atomic-layer structures, such as graphene and MoS 2 , 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】

CC BY