Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhanced dielectric breakdown performance of anatase and rutile titania
  based nano-oils   Nano oils synthesized by dispersing dielectric nanostructures counter common
intuition as such nano oils possess substantially higher positive dielectric
breakdown voltage with reduced streamer velocities than the base oils. Nano
oils comprising stable and dilute homogeneous dispersions of two forms of
titanium (IV) oxide (TiO2) nanoparticles (Anatase and Rutile) have been
experimentally examined and observed to exhibit highly enhanced dielectric
breakdown strength compared to conventional transformer oils. Indepth survey of
literature yields that research on enhancing insulation properties of mineral
oils by utilizing anatase and rutile titania nanoparticles is nought. The
present study involves titania dispersed in two different grades of transformer
oils, both with varied levels of thermal treatment, to obtain consistent and
high degrees of enhancement in the breakdown strength, as well as high degrees
of increment in the survival of the oils at elevated electrical stressing
compared to the base oils, as obtained via detailed twin parameter Weibull
distribution analysis of the experimental observations. It is also observed
that heat treatment of the nano oils further enhances the dielectric breakdown
performance. Additionally, further enhancements are observed at elevated
operational temperatures. Detailed studies on the performance of the nano oils
in presence of variant quantities of moisture have also been put forward. The
grossly different charging dynamics of dielectric nanoparticles localized
within the oil has been proposed to be responsible for efficient electron
trapping, leading to decrease in the positive streamer velocity and resulting
in high dielectric breakdown voltage. The differences in the performance of
anatase and rutile has been explained based on the electronic structure of the
two and the affinity towards electron scavenging.

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The categories of this paper are: solv-int
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The categories of this paper are: patt-sol
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The categories of this paper are: eess
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
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The categories of this paper are: supr-con
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The categories of this paper are: bayes-an
1
The categories of this paper are: cs
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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: econ
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The categories of this paper are: plasm-ph