Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stacking polymorphism in PtSe$_2$ drastically affects its
  electromechanical properties   PtSe$_2$ is one of the most promising materials for the next generation of
piezoresistive sensors. However, the large-scale synthesis of homogeneous thin
films with reproducible electromechanical properties is challenging due to
polycrystallinity. We show that stacking phases other than the AA-stacking in
the 1T phase become thermodynamically available at elevated temperatures. We
show that these can make up a significant fraction in a polycrystalline thin
film and discuss methods to characterize these stacking phases. Lastly, we
estimate their gauge factors, which vary strongly and significantly impact the
performance of a nanoelectromechanical device.

23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex