Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A simple method for monitoring uniformity of epitaxial semiconductor
  structures   A simple method for visualization of nonuniformity of planar MBE structures
is proposed. The method is based on measuring the relief of the photo-EMF. The
method can be applied to a wide variety of semiconductor structures and does
not require any expensive equipment.

24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th