Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Graphene-based Perfect Absorbers: Systematic Design and High Tunability   Experimental realization of efficient graphene-based absorbers is a
challenging task due to the low carrier mobility in processed graphene. In this
paper, we circumvent this problem by placing uniform graphene sheets on
metallic metasurfaces designed for improving the absorption properties of
low-mobility graphene. Complete absorption can be achieved for different
frequencies with the proper metasurface design. In the THz band, we observe
strong tunability of the absorption frequencies and magnitudes when modulating
graphene Fermi level.

10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci