'工学部/工学系研究科 プレスリリース' blog (64135473799) of hub id 20511701

PRESS RELEASE

One-dimensional van der Waals heterostructures

 

Authors

R. Xiang, T. Inoue, Y. Zheng, A. Kumamoto, Y. Qian, Y. Sato, M. Liu, D. Tang, D. Gokhale, J. Guo, K. Hisama, S. Yotsumoto, T. Ogamoto, H. Arai, Y. Kobayashi, H. Zhang, B. Hou, A. Anissimov, M. Maruyama, Y. Miyata, S. Okada, S. Chiashi, Y. Li, J. Kong, E. I. Kauppinen, Y. Ikuhara, K. Suenaga, S. Maruyama


Abstract
We present the experimental synthesis of one-dimensional (1D) van der Waals heterostructures, a class of materials where different atomic layers are coaxially stacked. We demonstrate the growth of single-crystal layers of hexagonal boron nitride (BN) and molybdenum disulfide (MoS2) crystals on single-walled carbon nanotubes (SWCNTs). For the latter, larger-diameter nanotubes that overcome strain effect were more readily synthesized. We also report a 5-nanometer–diameter heterostructure consisting of an inner SWCNT, a middle three-layer BN nanotube, and an outer MoS2 nanotube. Electron diffraction verifies that all shells in the heterostructures are single crystals. This work suggests that all of the materials in the current 2D library could be rolled into their 1D counterparts and a plethora of function-designable 1D heterostructures could be realized.

 

Science: https://science.sciencemag.org/content/367/6477/537

UTokyo Focus: https://www.u-tokyo.ac.jp/focus/en/press/z0508_00091.html

Alto University (Press Release): https://www.aalto.fi/en/news/aalto-carbon-nanotubes-used-in-new-material-revolution

EurekAlart!: https://www.eurekalert.org/pub_releases/2020-02/uot-ru020520.php

Science Daily: https://www.sciencedaily.com/releases/2020/02/200205132301.htm

Space Daily: https://www.spacedaily.com/reports/New_research_builds_upon_carbon_nanotubes_to_create_a_novel_functional_structure_999.html