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Wettability of partially suspended graphene

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep24237· OSTI ID:1254807
Dependence on the wettability of graphene on the nature of the underlying substrate remains only partially understood. We systematically investigate the role of liquid-substrate interactions on the wettability of graphene by varying the area fraction of suspended graphene from 0 to 95% by means of nanotextured substrates. We find that completely suspended graphene exhibits the highest water contact angle (85° ± 5°) compared to partially suspended or supported graphene, regardless of the hydrophobicity (hydrophilicity) of the substrate. Moreover, 80% of the long-range water-substrate interactions are screened by the graphene monolayer, the wettability of which is primarily determined by short-range graphene-liquid interactions. By its well-defined chemical and geometrical properties, supported graphene therefore provides a model system to elucidate the relative contribution of short and long range interactions to the macroscopic contact angle.
Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI ID:
1254807
Report Number(s):
BNL--112027-2016-JA; KC0203010
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Vol. 6; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (12)

Contact angle measurement of free-standing square-millimeter single-layer graphene journal October 2018
Development of non-bonded interaction parameters between graphene and water using particle swarm optimization: Development of Non-Bonded Interaction Parameters journal December 2017
Polarity governs atomic interaction through two-dimensional materials journal October 2018
A facile synthesis of porous graphene for efficient water and wastewater treatment journal January 2018
Superhydrophobic inkjet printed flexible graphene circuits via direct-pulsed laser writing journal January 2017
Influence of O 2 , H 2 O and airborne hydrocarbons on the properties of selected 2D materials journal January 2017
The evolution in graphitic surface wettability with first-principles quantum simulations: the counterintuitive role of water journal January 2018
Wettability of graphene: from influencing factors and reversible conversions to potential applications journal January 2019
Water wettability of graphene: interplay between the interfacial water structure and the electronic structure journal January 2018
Wetting of water on graphene nanopowders of different thicknesses journal April 2018
Accessibility of the pores in highly porous alumina films synthesized via sequential infiltration synthesis journal October 2018
Effect of plasma power on reduction of printable graphene oxide thin films on flexible substrates journal May 2018

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