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Self-scrolling MoS2 Metallic Wires


Two dimensional (2D) van der Waals (vdW) materials with strong in-plane chemical bonds and weak interaction in the out-of-plane direction have been acknowledged as a basic building block for designing dimensional materials in 0D, 1D, 2D and 3D forms. Compared to the explosive research on 2D vdW materials, quasi-one-dimensional (quasi-1D) vdW materials have received rare attention, despite they also present rich physics in electronics and engineering implications. Herein, quasi-1D MoS2 nanoscrolls are directly fabricated from CVD-grown 2D triangular MoS2 sheet. The formation, stability and electronic property of quasi-1D MoS2 nanoscrolls are studied experimentally and theoretically. The formation of nanoscroll always starts from the edge of triangular MoS2 sheet along its armchair orientation. The electronic properties of MoS2 nanoscrolls are systemically studied with optical spectroscopy, electrical transport together with density-functional theory (DFT) calculations. Surprisingly, the carrier mobility and contact property of MoS2 nanoscroll based field effect transistors (FETs) distinct from that of 2D MoS2 sheet. The transition from 2D semiconductor MoS2 sheet to 1D metallic MoS2 nanoscroll is successfully achieved. It is expected that this method of fabricating MoS2 nanoscrolls will attract wide interest for 1D transition metal dichalcogenides with novel physical and chemical properties.

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Publication details

The article was received on 06 Jun 2018, accepted on 03 Sep 2018 and first published on 03 Sep 2018

Article type: Paper
DOI: 10.1039/C8NR04611E
Citation: Nanoscale, 2018, Accepted Manuscript
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    Self-scrolling MoS2 Metallic Wires

    Z. Wang, H. Wu, Q. Li, F. Besenbacher, X. C. Zeng and M. Dong, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR04611E

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