151. One-dimensional van der Waals heterostructures
- Author
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Xiang, Rong, Inoue, Taiki, Zheng, Yongjia, Kumamoto, Akihito, Qian, Yang, Sato, Yuta, Liu, Ming, Gokhale, Devashish, Guo, Jia, Hisama, Kaoru, Yotsumoto, Satoshi, Ogamoto, Tatsuro, Arai, Hayato, Kobayashi, Yu, Zhang, Hao, Hou, Bo, Anisimov, Anton, Miyata, Yasumitsu, Okada, Susumu, Chiashi, Shohei, Li, Yan, Kong, Jing, Kauppinen, Esko I., Ikuhara, Yuichi, Suenaga, Kazu, and Maruyama, Shigeo
- Subjects
Condensed Matter - Materials Science - 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.
- Published
- 2018
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