Control of near-field radiative heat transfer based on anisotropic 2D materials

Lixin Ge, Yuping Cang, Ke Gong, Lihai Zhou, Daqing Yu, Yongsong Luo

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

In this work, we study the near-field radiative heat transfer between two suspended sheets of anisotropic 2D materials. It is found that the radiative heat transfer can be enhanced with orders-of-magnitude over the blackbody limit for nanoscale separation. The enhancement is attributed to the excitation of anisotropic and hyperbolic plasmonic modes. Meanwhile, a large thermal modulation effect, depending on the twisted angle of principal axes between the upper and bottom sheets of anisotropic 2D materials, is revealed. The near-field radiative heat transfer for different concentrations of electron is demonstrated and the role of hyperbolic plasmonic modes is analyzed. Our finding of radiative heat transfer between anisotropic 2D materials may find promising applications in thermal nano-devices, such as non-contact thermal modulators, thermal lithography, thermos-photovoltaics, etc.
Original languageEnglish (US)
Pages (from-to)085321
JournalAIP Advances
Volume8
Issue number8
DOIs
StatePublished - Aug 27 2018

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