Near-field radiative heat transfer between topological insulators via surface plasmon polaritons

Ruiyi Liu; Lixin Ge; Biyuan Wu; Zheng Cui; Xiaohu Wu

doi:10.1016/j.isci.2021.103408

Near-field radiative heat transfer between topological insulators via surface plasmon polaritons

iScience. 2021 Nov 9;24(12):103408. doi: 10.1016/j.isci.2021.103408. eCollection 2021 Dec 17.

Authors

Ruiyi Liu^{1

2}, Lixin Ge³, Biyuan Wu⁴, Zheng Cui^{1

2}, Xiaohu Wu²

Affiliations

¹ Institute of Advanced Technology, Shandong University, Jinan 250061, China.
² Shandong Institute of Advanced Technology, Jinan 250100, China.
³ School of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China.
⁴ School of Automation and Information Engineering, Xi'an University of Technology, Xi'an 710048, China.

Abstract

Recently, thanks to its excellent opto-electronic properties, two-dimension topological insulator not only has attracted broad interest in fields such as tunable detectors and nano-electronics but also shall yield more interesting prospect in thermal management, energy conversion, and so on. In this work, the excellent near-filed radiative heat transfer (NFRHT) resulting from monolayer topological insulator (Bi₂Se₃) is demonstrated. The NFRHT of this system is mainly dominated by the strong coupling effect of the surface plasmon polaritons (SPPs) between two Bi₂Se₃ sheets. Moreover, the non-monotonic dependence of the Fermi energy of Bi₂Se₃ on NFRHT is then discovered. It is indicated that the system can provide great thermal adjustability by controlling the Fermi energy, achieving a modulation factor of heat flux as high as 98.94%. Finally, the effect of substrate on the NFRHT is also explored. This work provides a promising pathway for the highly efficient thermal management.

Keywords: Applied sciences; Heat transfer; Surface science.