Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Atomically Resolved Imaging of Highly Ordered Alternating Fluorinated
  Graphene   One of the most desirable goals of graphene research is to produce ordered 2D
chemical derivatives of suitable quality for monolayer device fabrication. Here
we reveal, by focal series exit wave reconstruction, that C2F chair is a stable
graphene derivative and demonstrates pristine long-range order limited only by
the size of a functionalized domain. Focal series of images of graphene and C2F
chair formed by reaction with XeF2 were obtained at 80 kV in an
aberration-corrected transmission electron microscope. EWR images reveal that
single carbon atoms and carbon-fluorine pairs in C2F chair alternate strictly
over domain sizes of at least 150 nm^2 with electron diffraction indicating
ordered domains >/= 0.16 square micrometer. Our results also indicate that,
within an ordered domain, functionalization occurs on one side only as theory
predicts. Additionally we show that electron diffraction provides a quick and
easy method for distinguishing between graphene, C2F chair and fully
fluorinated stoichiometric CF 2D phases.

2
The categories of this paper are: math
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph