Abstract
Ultrathin MoS2 has shown remarkable characteristics at the atomic scale with an immutable disorder to weak external stimuli. Ion beam modification unlocks the potential to selectively tune the size, concentration, and morphology of defects produced at the site of impact in 2D materials. Combining experiments, first-principles calculations, atomistic simulations, and transfer learning, it is shown that irradiation-induced defects can induce a rotation-dependent moiré pattern in vertically stacked homobilayers of MoS2 by deforming the atomically thin material and exciting surface acoustic waves (SAWs). Additionally, the direct correlation between stress and lattice disorder by probing the intrinsic defects and atomic environments are demonstrated. The method introduced in this paper sheds light on how engineering defects in the lattice can be used to tailor the angular mismatch in van der Waals (vdW) solids.
| Original language | English |
|---|---|
| Article number | 2300098 |
| Journal | Small |
| Volume | 19 |
| Issue number | 29 |
| DOIs | |
| State | Published - Jul 19 2023 |
Funding
This work was supported by the US Department of Energy, Office of Science, Basic Energy Sciences, under Award #DESC0019014 “Establishing defect-property relationships for 2D nanomaterials.” This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated by the US Department of Energy (DOE) Office of Science. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly-owned subsidiary of Honeywell International, Inc., for the US DOE's National Nuclear Security Administration under contract DE-NA-0003525. The views expressed in the article do not necessarily represent the views of the US DOE or the United States Government. A portion of this research was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. R.K. and A.N. would like to acknowledge the support of the National Science Foundation, Future Manufacturing Program, Award 2036359. R.G.H. and A.M.Z.T. would like to acknowledge the support of the National Science Foundation under Awards No. 1748464 and No. 1539916. This research used computational resources provided by the University of Florida Research Computing Center.[65] This work was supported by the US Department of Energy, Office of Science, Basic Energy Sciences, under Award #DESC0019014 “Establishing defect‐property relationships for 2D nanomaterials.” This work was performed, in part, at the Center for Integrated Nanotechnologies, an Office of Science User Facility operated by the US Department of Energy (DOE) Office of Science. Sandia National Laboratories is a multimission laboratory managed and operated by National Technology & Engineering Solutions of Sandia, LLC, a wholly‐owned subsidiary of Honeywell International, Inc., for the US DOE's National Nuclear Security Administration under contract DE‐NA‐0003525. The views expressed in the article do not necessarily represent the views of the US DOE or the United States Government. A portion of this research was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility. R.K. and A.N. would like to acknowledge the support of the National Science Foundation, Future Manufacturing Program, Award 2036359. R.G.H. and A.M.Z.T. would like to acknowledge the support of the National Science Foundation under Awards No. 1748464 and No. 1539916. This research used computational resources provided by the University of Florida Research Computing Center. [ 65 ]
Keywords
- 2D materials
- defects
- moiré patterns
- surface acoustic waves