Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal Thinning of Liquid Filaments under Dominant Surface Forces   Theory and numerical simulations of the thinning of liquid threads at high
superficial concentration of surfactants suggest the existence of an asymptotic
regime where surface tension balances surface viscous stresses, leading to an
exponential thinning with an $e$-fold time $F(\Theta)\,(3\mu_s +
\kappa_s)/\sigma$, where $\mu_s$ and $\kappa_s$ are the surface shear and
dilatational viscosity coefficients, $\sigma$ is the interfacial tension,
$\Theta=\kappa_s/\mu_s$, and $F(\Theta)$ is a universal function. The potential
use of this phenomenon to measure the surface viscosity coefficients is
discussed.

13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
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The categories of this paper are: math-ph
9
The categories of this paper are: nlin
1
The categories of this paper are: cs