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PHONON TRANSPORT AND THERMAL CONDUCTIVITY IN TWO-DIMENSIONAL MATERIALS

DOI: 10.1615/AnnualRevHeatTransfer.2016015491
pages 1-65

Xiaokun Gu
Department of Mechanical Engineering, University of Colorado at Boulder, Boulder, CO 80309, USA

Ronggui Yang
Department of Mechanical Engineering, University of Colorado, Boulder, CO 80309, USA; Materials Science and Engineering Program, University of Colorado, Boulder, CO 80309, USA; Mechanical Engineering Department Massachusetts Institute of Technology Cambridge, MA 02139, USA


KEY WORDS: Heat transfer, Phonon transport, Thermal conductivity, Two-dimensional material, Atomistic simulation, Graphene, Transition metal dichalcogenide, Silicene

Abstract

Two-dimensional (2D) materials, such as graphene, boron nitride, and transition metal dichalcogenides, have attracted increased interest due to their potential applications in electronics and optoelectronics. Thermal transport in 2D materials could be quite different from three-dimensional bulk materials. This chapter reviews the progress on experimental measurements and theoretical modeling of phonon transport and thermal conductivity in 2D materials. We focus our review on a few typical 2D materials, including graphene, boron nitride, silicene, transition metal dichalcogenides, and black phosphorus. The effects of different physical factors, such as sample size, strain, and defects, on thermal transport in 2D materials are summarized. We also discuss the environmental effect on the thermal transport of 2D materials, such as substrate and when 2D materials are presented in heterostructures and intercalated with inorganic components or organic molecules.

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