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Wetting Transparency of Single-Layer Graphene on Liquid Substrates.

Fan Yang1, Annette G Thompson1, Alex D McQuain2

  • 1Department of Chemical & Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, 15261, USA.

Advanced Materials (Deerfield Beach, Fla.)
|May 9, 2024
PubMed
Summary

Researchers measured graphene

Keywords:
contact anglegrapheneliquid substratewettabilitywetting transparency

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Area of Science:

  • Materials Science
  • Surface Science
  • Nanotechnology

Background:

  • Graphene exhibits wetting transparency, enabling wettability control on liquid substrates.
  • Direct measurement of floating graphene's wettability is challenging, limiting applications.

Purpose of the Study:

  • Develop an experimental method to measure the wetting transparency of single-layer graphene (SLG) on liquid substrates.
  • Demonstrate real-time wettability control using graphene on liquid substrates.

Main Methods:

  • Contact angle measurements.
  • Neumann's Triangle model.
  • Utilized immiscible testing (diiodomethane) and substrate (ammonium persulfate solution) liquids.

Main Results:

  • Successfully measured the wettability of free-suspended SLG.
  • Demonstrated near-complete wetting transparency of graphene.
  • Showcased real-time wettability control on liquid substrates.

Conclusions:

  • Established a reliable method for assessing graphene's wetting transparency.
  • Highlighted graphene's potential for creating advanced multifunctional devices.
  • Opened new avenues for materials development leveraging graphene's unique interface properties.