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Coulomb Explosion Strategy to Tailor Nano-architecture of α-MoO3 Nanobelts and Insight of its Intrinsic Mechanism

Abstract

Tailoring the nano-architectures of materials is significant for the development of nanoscience and nanotechnology. To date, one of the most powerful strategies is the convergent electron beam irradiation (EBI). However, only two main functions of knock-on or atomic displacement are achieved so far. In this work, the Coulomb explosion phenomenon is found to occur in the α-MoO3 nanobelt (NB) under the electron beam irradiation, which is controllable and can be used to create nanostructures efficiently, such as engineering holes, gaps, and other atomic/nanometer patterns on single α-MoO3 NB. Theoretical simulations starting from the charging state, charging rate to the threshold time of Coulomb explosion reveal that the Coulomb explosion phenomenon should result from a positive charging. The results also show that the multiply charged regions are quickly fragmented and then the monolayered α-MoO3 pieces can be peeled off once the Coulombic repulsion is sufficient to break the Mo-O bonds in the crystalline structure. It is believed that this efficient and versatile strategy may open up a new avenue to tailor α-MoO3 NBs or other kind of transition metal dichalcogenides via Coulomb explosion effect.

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Publication details

The article was received on 13 Feb 2018, accepted on 04 Apr 2018 and first published on 04 Apr 2018


Article type: Paper
DOI: 10.1039/C8NR01298A
Citation: Nanoscale, 2018, Accepted Manuscript
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    Coulomb Explosion Strategy to Tailor Nano-architecture of α-MoO3 Nanobelts and Insight of its Intrinsic Mechanism

    J. Zhang, L. Zhu, Y. Yang, H. Yong, J. Zhang, Y. Peng and J. Fu, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR01298A

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