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journal article·2023-07Open access

Tailoring the Angular Mismatch in MoS2 Homobilayers through Deformation Fields

Kory Burns, Anne Marie Z. Tan, Jordan A. Hachtel, Anikeya Aditya, Nitish Baradwaj, Ankit Mishra, Thomas Linker, Aiichiro Nakano, Rajiv Kalia, Eric J. Lang, Ryan Schoell, Richard G. Hennig, Khalid Hattar, Assel Aitkaliyeva

Small· Volume 19· Issue 29
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Source abstract

Abstract

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.
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Research context

Nanomaterials

OpenAlex topics: Ion-surface interactions and analysis · 2D Materials and Applications · Graphene research and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science & Engineering University of Florida Gainesville FL 32611 USA

Center for Integrated Nanotechnologies Sandia National Laboratories Albuquerque NM 87545 USA

Department of Materials Science & Engineering University of Virginia Charlottesville VA 22904 USA

Center for Nanophase Materials Science Oak Ridge National Laboratory Oak Ridge TN 37830 USA

Department of Physics University of Southern California Los Angeles CA 90089 USA

Department of Nuclear Engineering University of New Mexico Albuquerque NM 87131 USA

Department of Nuclear Engineering University of Tennessee Knoxville TN 37996 USA

Funding

U.S. Department of Energy · Office of Science · Basic Energy Sciences

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