Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Improved optomechanical disk resonator sitting on a pedestal mechanical
  shield   We experimentally demonstrate the controlled enhancement of the mechanical
quality factor Q of GaAs disk optomechanical resonators. Disks vibrating at 1.3
GHz with a mechanical shield integrated in their pedestal show a Q improvement
by a factor 10 to 16. The structure is modeled numerically and different modes
of vibration are observed, which shed light on the Q enhancement mechanism. An
optimized double-disk geometry is presented that promises Q above the million
for a large parameter range.

19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org