Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Shear piezoelectricity in poly(vinylidenefluoride-co-trifluoroethylene):
  full piezotensor coefficients by molecular modeling, biaxial transverse
  response, and use in suspended energy-harvesting nanostructures   The intrinsic flexible character of polymeric materials also causes
remarkable strain deformations along directions perpendicular to the applied
stress. Here the biaxial response in the shear piezoelectricity of
polyvinylidenefluoride copolymers is analyzed and their full piezoelectric
tensors are provided. The microscopic shear is exploited in single suspended
nanowires bent by localized loading to couple flexural deformation and
transverse piezoelectric response.

9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an