Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Shear Thickening and Scaling of the Elastic Modulus in a Fractal
  Colloidal System with Attractive Interactions   Dilute oil dispersions of fractal carbon black particles with attractive Van
der Waals interactions display continuous shear thickening followed by shear
thinning at high shear rates. The shear thickening transition occurs at
$\dot\gamma_{c}\approx 10^{2}-10^{3}s^{-1}$ and is driven by hydrodynamic
breakup of clusters. Pre-shearing dispersions at shear rates
$\dot\gamma>\dot\gamma_{c}$ produces enhanced-modulus gels where $G' \sim
\sigma_{pre-shear}^{1.5-2}$ and is directly proportional to the residual stress
in the gel measured at a fixed sample age. The observed data can be accounted
for using a simple scaling model for the breakup of fractal clusters under
shear stress.

17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
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The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph