arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1807.06154cond-mat.mtrl-sci
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一维范德华异质结构

One-dimensional van der Waals heterostructures

Rong Xiang, Taiki Inoue, Yongjia Zheng, Akihito Kumamoto, Yang Qian, Yuta Sato, Ming Liu, Devashish Gokhale, Jia Guo, Kaoru Hisama, Satoshi Yotsumoto, Tatsuro O… 展开作者

Rong Xiang, Taiki Inoue, Yongjia Zheng, Akihito Kumamoto, Yang Qian, Yuta Sato, Ming Liu, Devashish Gokhale, Jia Guo, Kaoru Hisama, Satoshi Yotsumoto, Tatsuro Ogamoto, Hayato Arai, Yu Kobayashi, Hao Zhang, Bo Hou, Anton Anisimov, Yasumitsu Miyata, Susumu Okada, Shohei Chiashi, Yan Li, Jing Kong, Esko I. Kauppinen, Yuichi Ikuhara, Kazu Suenaga, Shigeo Maruyama

摘要:

材料的设计性能是材料合成中一个很有吸引力的概念,但在实际中很难实现。最近一个成功的例子是范德华(vdW)异质结构的演示,1-3其中原子层相互堆叠,不同的成分可以超越对称性和晶格匹配进行组合。这个概念,通常被描述为纳米级乐高积木,允许逐层构建复杂的结构。然而,这种概念迄今为止仅限于二维(2D)材料。在这里,我们展示了一类新材料,其中不同的层同轴(而不是平面)堆叠。由于这种结构是一维的,我们称之为“一维vdW异质结构”。我们展示了一个5 nm直径的纳米管由三种不同的材料组成:内部导电碳纳米管(CNT),中间绝缘六方氮化硼纳米管(BNNT)和外部半导体二硫化钼纳米管。由于该技术高度适用于当前2D库中的其他材料,4-6我们预计我们的策略将成为发现一类新的半导体纳米管材料的起点。碳纳米管、BNNT和半导体纳米管的结合将产生大量的功能可设计的一维异质结构。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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