Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-exposure profilometry using partitioned aperture wavefront
  imaging   We demonstrate a technique for instantaneous measurements of surface
topography based on the combination of a partitioned aperture wavefront imager
with a standard lamp-based reflection microscope. The technique can operate at
video rate over large fields of view, and provides nanometer axial resolution
and sub-micron lateral resolution. We discuss performance characteristics of
this technique, which we experimentally compare with scanning white light
interferometry.

33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph