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Related Experiment Video

Updated: May 15, 2026

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
09:37

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry

Published on: October 18, 2019

Buckled silicene formation on Ir(111).

Lei Meng1, Yeliang Wang, Lizhi Zhang

  • 1Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

Nano Letters
|January 22, 2013
PubMed
Summary

Researchers fabricated high-quality silicene, a 2D material, on an iridium (Ir) substrate. This study explains the formation of buckled silicene and its 2D continuity on the Ir(111) surface.

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Last Updated: May 15, 2026

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Published on: October 18, 2019

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
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Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics

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Area of Science:

  • Materials Science
  • Surface Science
  • Condensed Matter Physics

Background:

  • Silicene is a 2D honeycomb structure analogous to graphene.
  • Fabrication of stable silicene structures remains a challenge.
  • Understanding silicene's atomic arrangement and electronic properties is crucial.

Purpose of the Study:

  • To successfully fabricate high-quality silicene on an Ir(111) substrate.
  • To characterize the structural and electronic properties of the fabricated silicene.
  • To elucidate the mechanism behind the formation of buckled silicene.

Main Methods:

  • Low energy electron diffraction (LEED) for structural characterization.
  • Scanning tunneling microscopy (STM) for atomic-scale imaging.
  • First-principles calculations for theoretical validation.

Main Results:

  • Silicene was successfully fabricated on an Ir(111) substrate, forming a (√3×√3) silicene/(√7×√7) Ir(111) superstructure.
  • Experimental and theoretical methods confirmed a buckled conformation of the silicene sheet.
  • Calculated electron localization function indicated 2D continuity of the silicon adlayer on the substrate.

Conclusions:

  • A method for fabricating high-quality silicene on Ir(111) has been established.
  • The study provides a comprehensive explanation for the formation of buckled silicene sheets.
  • The findings contribute to the understanding of 2D materials synthesis and properties.