Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Making a field effect transistor on a single graphene nanoribbon by
  selective doping   Using first-principle electronic structure calculations, we show a metal-
semiconductor transition of a metallic graphene nanoribbon with zigzag edges
induced by substitutional doping of Nitrogen or Boron atoms at the edges. A
field effect transistor consisting of a metal-semiconductor-metal junction can
then be constructed by selective doping of the ribbon edges. The
current-voltage characteristics of such a prototype device is determined by the
first-principle quantum transport calculations.

20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
9
The categories of this paper are: nlin