Wetting Transparency of Single-Layer Graphene on Liquid Substrates.

Autor: Yang F; Department of Chemical & Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, 15261, USA., Thompson AG; Department of Chemical & Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, 15261, USA., McQuain AD; Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA., Gundurao D; Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA., Stando G; Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA., Kim MA; Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA., Liu H; Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania, 15260, USA., Li L; Department of Chemical & Petroleum Engineering, University of Pittsburgh, Pittsburgh, Pennsylvania, 15261, USA.
Jazyk: angličtina
Zdroj: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2024 Jul; Vol. 36 (30), pp. e2403820. Date of Electronic Publication: 2024 May 14.
DOI: 10.1002/adma.202403820
Abstrakt: Graphene's wetting transparency offers promising avenues for creating multifunctional devices by allowing real-time wettability control on liquid substrates via the flow of different liquids beneath graphene. Despite its potential, direct measurement of floating graphene's wettability remains a challenge, hindering the exploration of these applications. The current study develops an experimental methodology to assess the wetting transparency of single-layer graphene (SLG) on liquid substrates. By employing contact angle measurements and Neumann's Triangle model, the challenge of evaluating the wettability of floating free-suspended single-layer graphene is addressed. The research reveals that for successful contact angle measurements, the testing and substrate liquids must be immiscible. Using diiodomethane as the testing liquid and ammonium persulfate solution as liquid substrate, the study demonstrates the near-complete wetting transparency of graphene. Furthermore, it successfully showcases the feasibility of real-time wettability control using graphene on liquid substrates. This work not only advances the understanding of graphene's interaction with liquid interfaces but also suggests a new avenue for the development of multifunctional materials and devices by exploiting the unique wetting transparency of graphene.
(© 2024 The Authors. Advanced Materials published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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