One-dimensional van der Waals heterostructures
Abstract
Property by design is one appealing idea in material synthesis but hard to achieve in practice. A recent successful example is the demonstration of van der Waals (vdW) heterostructures,1-3 in which atomic layers are stacked on each other and different ingredients can be combined beyond symmetry and lattice matching. This concept, usually described as a nanoscale Lego blocks, allows to build sophisticated structures layer by layer. However, this concept has been so far limited in two dimensional (2D) materials. Here we show a class of new material where different layers are coaxially (instead of planarly) stacked. As the structure is in one dimensional (1D) form, we name it "1D vdW heterostructures". We demonstrate a 5 nm diameter nanotube consisting of three different materials: an inner conductive carbon nanotube (CNT), a middle insulating hexagonal boron nitride nanotube (BNNT) and an outside semiconducting MoS2 nanotube. As the technique is highly applicable to other materials in the current 2D libraries,4-6 we anticipate our strategy to be a starting point for discovering a class of new semiconducting nanotube materials. A plethora of function-designable 1D heterostructures will appear after the combination of CNTs, BNNTs and semiconducting nanotubes.
Keywords
Cite
@article{arxiv.1807.06154,
title = {One-dimensional van der Waals heterostructures},
author = {Rong Xiang and Taiki Inoue and Yongjia Zheng and Akihito Kumamoto and Yang Qian and Yuta Sato and Ming Liu and Devashish Gokhale and Jia Guo and Kaoru Hisama and Satoshi Yotsumoto and Tatsuro Ogamoto and Hayato Arai and Yu Kobayashi and Hao Zhang and Bo Hou and Anton Anisimov and Yasumitsu Miyata and Susumu Okada and Shohei Chiashi and Yan Li and Jing Kong and Esko I. Kauppinen and Yuichi Ikuhara and Kazu Suenaga and Shigeo Maruyama},
journal= {arXiv preprint arXiv:1807.06154},
year = {2020}
}