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http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/2633| Title: | Wettability of partially suspended graphene |
| Authors: | Ondarcuhu, Thierry Thomas, Vincent Nunez, Marc Dujardin, Erik RAHMAN, ATIKUR Black, Charles T. Checco, Antonio Dept. of Physics |
| Keywords: | Wettability Partially suspended graphene Fabrication Graphene monolayers transferred Polymer contamination Hydrophobic substrates 2016 |
| Issue Date: | Apr-2016 |
| Publisher: | Nature Publishing Group |
| Citation: | Scientific Reports, 6, 24237. |
| Abstract: | The dependence of the wettability of graphene on the nature of the underlying substrate remains only partially understood. Here, 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. Further, 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. |
| URI: | http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/2633 https://doi.org/10.1038/srep24237 |
| ISSN: | 2045-2322 |
| Appears in Collections: | JOURNAL ARTICLES |
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