Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Auxetic behavior and acoustic properties of microstructured
  piezoelectric strain sensors   The use of multifunctional composite materials adopting piezo-electric
periodic cellular lattice structures with auxetic elastic behavior is a recent
and promising solution in the design of piezoelectric sensors. In the present
work, periodic anti-tetrachiral auxetic lattice structures, characterized by
different geometries, are taken into account and the mechanical and
piezoelectrical response are investigated. The equivalent piezoelectric
properties are obtained adopting a first order computational homogenization
approach, generalized to the case of electro-mechanical coupling, and various
polarization directions are adopted. Two examples of in-plane and out-of-plane
strain sensors are proposed as design concepts. Moreover, a
piezo-elasto-dynamic dispersion analysis adopting the Floquet-Bloch
decomposition is performed. The acoustic behavior of the periodic piezoelectric
material with auxetic topology is studied and possible band gaps are detected.

26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess