Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strain-tunable band parameters of ZnO monolayer in graphene-like
  honeycomb structure   We present ab initio calculations which show that the direct-band-gap,
effective masses and Fermi velocities of charge carriers in ZnO monolayer
(ML-ZnO) in graphene-like honeycomb structure are all tunable by application of
in-plane homogeneous biaxial strain. Within our simulated strain limit of $\pm
10$%, the band gap remains direct and shows a strong non-linear variation with
strain. Moreover, the average Fermi velocity of electrons in unstrained ML-ZnO
is of the same order of magnitude as that in graphene. The results promise
potential applications of ML-ZnO in mechatronics/straintronics and other
nanodevices such as the nano-electromechanical systems (NEMS) and
nano-optomechanical systems (NOMS).

25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio