Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mobilities of a drop and an encapsulated squirmer   We have analyzed the dynamics of a spherical, uni-axial squirmer which is
located inside a spherical liquid drop at general position $\bm{r}_s$. The
squirmer is subject to an external force and torque in addition to the slip
velocity on its surface. We have derived exact analytical expressions for the
linear and rotational velocity of the squirmer as well as the linear velocity
of the drop for general, non-axisymmetric configurations. The mobilities of
both, squirmer and drop, are in general anisotropic, depending on the
orientation of $\bm{r}_s$, relative to squirmer axis, external force or torque.
We discuss their dependence on the size of the squirmer, its distance from the
center of the drop and the viscosities. Our results provide a first step
towards a discussion of the trajectories of the composite system of drop and
enclosed squirmer.

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The categories of this paper are: dg-ga
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The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
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The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
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The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: bayes-an