Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superconducting inductive displacement detection of a microcantilever   We demonstrate a superconducting inductive technique to measure the
displacement of a micromechanical resonator. In our scheme, a type I
superconducting microsphere is attached to the free end of a microcantilever
and approached to the loop of a dc Superconducting Quantum Interference Device
(SQUID) microsusceptometer. A local magnetic field as low as 100 $\mu$T,
generated by a field coil concentric to the SQUID, enables detection of the
cantilever thermomechanical noise at $4.2$ K. The magnetomechanical coupling
and the magnetic spring are in good agreement with image method calculations
assuming pure Meissner effect. These measurements are relevant to recent
proposals of quantum magnetomechanics experiments based on levitating
superconducting microparticles.

33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
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The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat