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Strain‐Induced Structural Deformation Study of 2D Mo x W (1‐ x ) S 2
Author(s) -
Susarla Sandhya,
Manimunda Praveena,
Jaques Ygor M.,
Hachtel Jordan A.,
Idrobo Juan C.,
Asif S. A. Syed,
Galvão Douglas S.,
Tiwary Chandra Sekhar,
Ajayan Pulickel M.
Publication year - 2019
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201801262
Subject(s) - materials science , raman spectroscopy , deformation (meteorology) , strain (injury) , alloy , stress (linguistics) , crystallography , composite material , optics , medicine , linguistics , philosophy , physics , chemistry
The possibility of tuning properties and its potential applications in the fields of optoelectronics and/or flexible electronics, has increased the demand for 2D alloys in recent times. Understanding the mechanical performance of 2D materials under extreme conditions, such as strain, stress, and fracture is essential for the reliable electronic devices based on these structures. In this study, combined molecular dynamics (MD) simulations and in situ Raman spectroscopic techniques are used to study the mechanical performance of a 2D alloy system, Mo x W (1‐ x ) S 2 . It is observed that W substitution in MoS 2 causes solid‐solution strengthening and increase in the Young's modulus values. Higher W content decreases failure strain for MoS 2 . Based on spatially resolved Raman spectroscopy and MD simulations results, a detailed model to explain failure mechanisms in Mo x W (1‐ x ) S 2 alloys is proposed.