Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nanomechanical resonators based on adiabatic periodicity-breaking in a
  superlattice   We propose a novel acoustic cavity design where we confine a mechanical mode
by adiabatically changing the acoustic properties of a GaAs/AlAs superlattice.
By means of high resolution Raman scattering measurements, we experimentally
demonstrate the presence of a confined acoustic mode at a resonance frequency
around 350 GHz. We observe an excellent agreement between the experimental data
and numerical simulations based on a photoelastic model. We demonstrate that
the spatial profile of the confined mode can be tuned by changing the magnitude
of the adiabatic deformation, leading to strong variations of its mechanical
quality factor and Raman scattering cross section. The reported alternative
confinement method could lead to the development of a novel generation of
nanophononic and optomechanical systems.

19
The categories of this paper are: eess
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin