Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Precise and reversible band gap tuning in single-layer MoSe2 by uniaxial
  strain   We present photoluminescence (PL) spectroscopy measurements of single-layer
MoSe2 as a function of uniform uniaxial strain. A simple clamping and bending
method is described that allows for application of uniaxial strain to layered,
2D materials with strains up to 1.1% without slippage. Using this technique, we
find that the electronic band gap of single layer MoSe2 can be reversibly tuned
by -27 +- 2 meV per percent of strain. This is in agreement with our
density-functional theory calculations, which estimate a modulation of -32 meV
per percent of strain, taking into account the role of deformation of the
underlying substrate upon bending. Finally, due to its narrow PL spectra as
compared with that of MoS2, we show that MoSe2 provides a more precise
determination of small changes in strain making it the ideal 2D material for
strain applications.

8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
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The categories of this paper are: mtrl-th