Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Real Time Electron Microscope Imaging of Nanoparticle Motion Induced by
  a Moving Contact Line   Real time fluid dynamics videos showing the motion and aggregation of
nanorods induced by moving contact lines were obtained by liquid cell in situ
scanning transmission electron microscopy.

0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio