Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Double domain resonance in a periodically poled ferroelectric wafer   The periodically poled ferroelectric wafer is a two-dimensional phononic
superlattice. The important applications of such a solid include novel
ultrasonic transducers at the micro/nano-scale for low intensity
ultra-sonography, ferroelectric data storage, and development of very high
frequency chips for next generation communication and information technologies,
and others. Usually, the transformations between the electrical and mechanical
energies are required in the applications. In this work, we find the frequency
characteristics for an effective acousto-electric interaction in a
two-dimensional phononic superlattice inserted in LiNbO3 wafer.

2
The categories of this paper are: math
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph