Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Particle tracking for polydisperse sedimenting droplets in phase
  separation   When a binary fluid demixes under a slow temperature ramp, nucleation,
coarsening and sedimentation of droplets lead to an oscillatory evolution of
the phase separating system. The advection of the sedimenting droplets is found
to be chaotic. The flow is driven by density differences between the two
phases. Here, we show how image processing can be combined with particle
tracking to resolve droplet size and velocity simultaneously. Droplets are used
as tracer particles, and the sedimentation velocity is determined. Taking these
effects into account, droplets with radii in the range of 4 -- 40 micrometers
are detected and tracked. Based on this data we resolve the oscillations in the
droplet size distribution which are coupled to the convective flow.

33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg