Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universality of cauliflower-like fronts: from nanoscale thin films to
  macroscopic plants   Chemical vapor deposition (CVD) is a widely used technique to grow solid
materials with accurate control of layer thickness and composition. Under
mass-transport-limited conditions, the surface of thin films thus produced
grows in an unstable fashion, developing a typical motif that resembles the
familiar surface of a cauliflower plant. Through experiments on CVD production
of amorphous hydrogenated carbon films leading to cauliflower-like fronts, we
provide a quantitative assessment of a continuum description of CVD interface
growth. As a result, we identify non-locality, non-conservation, and randomness
as the main general mechanisms controlling the formation of these ubiquitous
shapes. We also show that the surfaces of actual cauliflower plants and
combustion fronts obey the same scaling laws, proving the validity of the
theory over seven orders of magnitude in length scales. Thus, a theoretical
justification is provided, that had remained elusive thus far, for the
remarkable similarity between the textures of surfaces found for systems that
differ widely in physical nature and typical scales.

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The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con