Routes to identification of intrinsic twist in helical MoS2 nanotubes by electron diffraction and annular dark-field scanning transmission electron microscopy imaging

A. Mittal, D. B. Zhang, C. Teresi, T. Dumitricǎ, K. A. Mkhoyan

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Objective molecular dynamics simulations coupled with a density functional-based tight-binding model indicated that a stress-free single-walled (14,6) MoS2 nanotube exhibits a torsional deformation of 0.87 deg/nm. Simulated electron diffraction patterns and atomic-resolution annular dark field scanning transmission electron microscopy (ADF-STEM) images of the computed nanotube structures show promise that this peculiar feature can be identified experimentally. The small intrinsic twist removes the translational periodicity prescribed by the rolled-up construction and defines a nanotube for which the atomic order is most fundamentally described by the objective structures concept.

Original languageEnglish (US)
Article number153401
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number15
DOIs
StatePublished - Oct 4 2011

Fingerprint Dive into the research topics of 'Routes to identification of intrinsic twist in helical MoS<sub>2</sub> nanotubes by electron diffraction and annular dark-field scanning transmission electron microscopy imaging'. Together they form a unique fingerprint.

Cite this