Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An experimental method for the in-situ observation of eutectic growth
  patterns in bulk samples of transparent alloys   We present an experimental method for the in-situ observation of
directional-solidification fronts in bulk samples of transparent eutectic
alloys. The growth front is observed obliquely in dark field through the liquid
and a glass wall of the container with a long-distance microscope. We show that
a focused image of the whole growth front can be obtained at a certain tilt
angle of the microscope. At this tilt angle, eutectic fibers of about 3.5\mic
in diameter can be clearly seen over the whole growth front in 400-\mic thick
samples.

37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex