Abstract

Interlayer rotational alignment in van der Waals (vdW) structures of two-dimensional (2D) materials couples strongly to electronic properties and, therefore, has significant technological implications. Nevertheless, controlling the rotation of an arbitrary 2D material flake remains a challenge in the development of rotation-tunable electronics, for the emerging field of twistronics. In this article, we reveal a general moire-driven mechanism that governs the interlayer rotation. Controlling the moire can therefore hold promise for controlling the interlayer rotation. We further demonstrate mismatch strain engineering as a useful tool to design the interlayer rotation via changing the energy landscape of moire within a finite-sized region. The robustness and programmable nature of our approach arise from moire symmetry, energetics, and mechanics. Our approach provides another possibility to the on-demand design of rotation-tunable electronics.

Original languageEnglish (US)
Pages (from-to)6925-6931
Number of pages7
JournalACS Nano
Volume13
Issue number6
DOIs
StatePublished - Jun 25 2019

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flakes
interlayers
Electronic equipment
electronics
Electronic properties
emerging
Mechanics
alignment
engineering
symmetry

Keywords

  • Two-Dimensional materials
  • interlayer rotation
  • moire
  • strain engineering

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Controlling Rotation of Two-Dimensional Material Flakes. / Zhu, Shuze; Pochet, Pascal; Johnson, Harley T.

In: ACS Nano, Vol. 13, No. 6, 25.06.2019, p. 6925-6931.

Research output: Contribution to journalArticle

Zhu, Shuze ; Pochet, Pascal ; Johnson, Harley T. / Controlling Rotation of Two-Dimensional Material Flakes. In: ACS Nano. 2019 ; Vol. 13, No. 6. pp. 6925-6931.
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