The Ultrahigh Quantum Thermal Conductance of Hydrogenated Boron Nanotubes. Issue 8 (1st April 2019)

• Record Type: Journal Article
• Authors: He, Jia; Li, Dengfeng; Ying, Yan; Zhou, Hangbo; Zhou, Ping; Zhang, Gang
• Is Part Of: Physica status solidi. Volume 256:Issue 8(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-04-01
• Subjects: boron nanotubes -- non‐equilibrium Green's functions -- thermal conductance; Solid state physics -- Periodicals; Solids -- Periodicals; Atomic structure -- Periodicals; 530.41
• DOI: 10.1002/pssb.201900122
• Languages: English
• ISSNs: 0370-1972

Abstract

Abstract : Using first‐principles calculations and phonon dispersion analysis, the authors demonstrate theoretically that a hydrogenated monolayer borophene sheet can form a stable nanotube structure, denoted as H‐BNT. Combined with non‐equilibrium Green's function method, it is found that although thermal conductance of H‐BNT is lower than its carbon counterpart in the high‐temperature limit, at room temperature the phonon thermal conductance of H‐BNT is only slightly lower (2%) than carbon nanotube with the similar diameter. The high room temperature thermal conductance of boron nanotube is attributed to the light atomic mass of boron, strong interatomic force between boron atoms and high atomic density. Our studies shed light on the nature of quantum thermal transport in low‐dimensional materials, and can help in developing boron‐based nanoscale devices. Abstract : The thermal conductance of a hydrogenated borophene nanotube is only slightly lower (2%) than a carbon nanotube with the similar diameter, which is attributed to the light atomic mass of boron, strong interatomic force between boron atoms and high atomic density. This sheds light on the nature of quantum thermal transport in low‐dimensional materials, and can help in developing boron‐based nanoscale devices.