Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Direct correlation between strengthening mechanisms and electrical noise
  in strained copper wires   We have measured the resistance noise of copper metallic wires during a
tensile stress. The time variation of the main resistance is continuous up to
the wire breakdown, but its fluctuations reveal the intermittent and
heterogeneous character of plastic flow. We show in particular direct
correlations between strengthening mechanisms and noise spectra
characteristics.

32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom