Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Large $d_{33}$ Piezoelectric-Polymer Composites For RF Acoustic
  Resonators   While piezoelectric transduction enables designing acoustic resonators
operating at multi-GHz frequencies, the deposition of piezoelectric materials
typically requires high temperature processes and specific crystallographic
orientation of substrates, thus imposing a limitation on materials that could
be used. In this paper we present a piezoelectrically transduced thickness mode
acoustic resonator that employs piezoelectric (PMNPT) nanoparticles embedded in
a polymer (SU8) matrix. This composite material is deposited using standard
resist-spin coaters and is thus compatible with a variety of substrates. The
device presented here uses a double side polished single crystal silicon wafer
as the low loss acoustic substrate for the resonator and $1.7\mu m$ thick
SU8-PMNPT composite film as the actuator, and exhibits large effective
piezoelectric coefficient $(d_{33})$ of $216pm/V$, and we experimentally
demonstrate efficient transduction of acoustic resonances at frequencies up to
$1.5GHz$.

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The categories of this paper are: chem-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
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The categories of this paper are: math-ph
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The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
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The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
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The categories of this paper are: hep-th