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Title: Wettability of partially suspended graphene

Abstract

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.

Authors:
 [1];  [1];  [1];  [1];  [2];  [2];  [2]
  1. CEMES-CNRS, Toulouse (France)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1254807
Report Number(s):
BNL-112027-2016-JA
Journal ID: ISSN 2045-2322; R&D Project: PO034; KC0203010
Grant/Contract Number:  
SC00112704
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Ondarçuhu, Thierry, Thomas, Vincent, Nuñez, Marc, Dujardin, Erik, Rahman, Atikur, Black, Charles T., and Checco, Antonio. Wettability of partially suspended graphene. United States: N. p., 2016. Web. doi:10.1038/srep24237.
Ondarçuhu, Thierry, Thomas, Vincent, Nuñez, Marc, Dujardin, Erik, Rahman, Atikur, Black, Charles T., & Checco, Antonio. Wettability of partially suspended graphene. United States. doi:10.1038/srep24237.
Ondarçuhu, Thierry, Thomas, Vincent, Nuñez, Marc, Dujardin, Erik, Rahman, Atikur, Black, Charles T., and Checco, Antonio. Wed . "Wettability of partially suspended graphene". United States. doi:10.1038/srep24237. https://www.osti.gov/servlets/purl/1254807.
@article{osti_1254807,
title = {Wettability of partially suspended graphene},
author = {Ondarçuhu, Thierry and Thomas, Vincent and Nuñez, Marc and Dujardin, Erik and Rahman, Atikur and Black, Charles T. and Checco, Antonio},
abstractNote = {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.},
doi = {10.1038/srep24237},
journal = {Scientific Reports},
number = ,
volume = 6,
place = {United States},
year = {2016},
month = {4}
}

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Cited by: 14 works
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