Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the mechanism of hydrophilicity of graphene   It is generally accepted that the hydrophilic property of graphene can be
affected by the underlying substrate. However, the role of intrinsic vs.
substrate contributions and the related mechanisms are vividly debated. Here we
show that the intrinsic hydrophilicity of graphene can be intimately connected
to the position of its Fermi level, which affects the interaction between
graphene and water molecules. The underlying substrate, or dopants, can tune
hydrophilicity by modulating the Fermi level of graphene. By shifting the Fermi
level of graphene away from its Dirac point, via either chemical or electrical
voltage doping, we show enhanced hydrophilicity with experiments and first
principle simulations. Increased vapor condensation on graphene, induced by a
simple shifting of its Fermi level, exemplifies applications in the area of
interfacial transport phenomena.

8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin