Torsional Deformations in Subnanometer MoS Interconnecting Wires

Nano Letters
Ai Leen KohJamie H Warner

Abstract

We use aberration-corrected transmission electron microscopy to track the real time atomic level torsional dynamics of subnanometer wires of MoS interconnecting monolayer regions of MoS2. An in situ heating holder is used inside the transmission electron microscope to raise the temperature of the sample to 400 °C to increase crystallization rates of the wires and reduce contamination effects. Frequent rotational twisting of the MoS wire is captured, demonstrating elastic torsional deformation of the MoS wires. We show that torsional rotations of the crystal structure of the MoS wires depend upon the specific atomic structure of the anchored sections of the suspended wire and the number of unit cells that make up the wire length. Elastic torsional flexibility of the MoS wires is revealed to help their self-adapting connectivity during the structural changes. Plastic torsional deformation is also seen for MoS wires that contain defects in their crystal structure, which produce small scale rotational disorder within the wires. Upon removal of the defects, the wire returns back to pristine form. These results provide detailed insights into how the atomic structure of the anchoring site significantly influences the nanowire configur...Continue Reading

References

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Aug 11, 2010·ACS Nano·Jamie H Warner, Mark Wilson
Aug 30, 2013·Nano Letters·Cristina E GiuscaS Ravi P Silva
Oct 27, 2010·Science and Technology of Advanced Materials·Ujjal K GautamDmitri Golberg

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Citations

Jul 6, 2018·Chemical Society Reviews·Shanshan WangJamie H Warner
Jul 3, 2020·Nanoscale·Kyung-Hwan Jin, Feng Liu
May 19, 2021·Nanoscale·Alejandra Londoño-CalderonMichael T Pettes
Feb 26, 2019·Nano Letters·Masataka NagataHisanori Shinohara

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