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Summary: LETTERS
PUBLISHED ONLINE: 22 JANUARY 2012 | DOI: 10.1038/NMAT3228
Wetting transparency of graphene
Javad Rafiee1
, Xi Mi2
, Hemtej Gullapalli3
, Abhay V. Thomas1
, Fazel Yavari1
, Yunfeng Shi2
,
Pulickel M. Ajayan3
* and Nikhil A. Koratkar1,2
*
We report that graphene coatings do not significantly disrupt
the intrinsic wetting behaviour of surfaces for which surface
water interactions are dominated by van der Waals forces.
Our contact angle measurements indicate that a graphene
monolayer is wetting-transparent to copper, gold or silicon,
but not glass, for which the wettability is dominated by
short-range chemical bonding. With increasing number of
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