Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Laser-induced surface relief nanocrowns as a manifestation of nanoscale
  Rayleigh-Plateau hydrodynamic instability   Nanoscale hydrodynamic instability of ring-like molten rims around ablative
microholes produced in nanometer-thick gold films by tightly focused
nanosecond-laser pulses was experimentally explored in terms of laser pulse
energy and film thickness. These parametric dependencies of basic instability
characteristics - order and period of the resulting nanocrowns - were analyzed,
revealing its apparently Rayleigh-Plateau character, as compared to much less
consistent possible van der Waals and impact origins. Along with fundamental
importance, these findings will put forward pulsed laser ablation as an
alternative facile inexpensive table-top approach to study such hydrodynamic
instabilities developing at nanosecond temporal and nanometer spatial scales.

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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ