Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Preparation of graphene bilayers on platinum by sequential chemical
  vapour deposition   A cheap and flexible method is introduced that enables the epitaxial growth
of bilayer graphene on Pt(111) by sequential chemical vapour deposition.
Extended regions of two stacked graphene sheets are obtained by, first, the
thermal decomposition of ethylene and the subsequent formation of graphene. In
the second step, a sufficiently thick Pt film buries the first graphene layer
and acts as a platform for the fabrication of the second graphene layer in the
third step. A final annealing process then leads to the diffusion of the first
graphene sheet to the surface until the bilayer stacking with the second sheet
is accomplished. Scanning tunnelling microscopy unravels the successful growth
of bilayer graphene and elucidates the origin of moir\'e patterns.

33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex