Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhanced Slippery Behavior and Stability of Lubricating Fluid Infused
  Nanostructured Surfaces   Stability of lubricating fluid infused slippery surfaces is a concern for
scientists and engineers and attempts are being made for its improvement.
Lubricating oil coated slippery surface for aqueous drops is one of the
important candidates in this class and their stability needs be improved to
make them useful for practical applications. Cloaking of water drops with thin
lubricant layer results in the loss of lubricant leading to deterioration of
slippery behavior. Surface roughness or porosity provides larger surface area
to the lubricating fluid and would to affect the stability of the lubricating
film. Here we report the effect of surface roughness, from tens of nanometer to
few microns, on the stability of slippery surface. Samples with small nanoscale
roughness show improved performance in terms of contact angle hysteresis,
critical tilt angle and slip velocity. Whereas large roughness samples show
poorer performance compared to small nanoscale roughness and smooth samples.
Small nanoscale roughness samples also show relatively slower deterioration
against loss of lubricant during water flow. Once completely lost, the slippery
behavior can be restored again simply by coating the sample again by the
lubricating fluid.

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The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
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The categories of this paper are: econ
6
The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: funct-an
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The categories of this paper are: eess