Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Strong Light Confinement in Rod-Connected Diamond Photonic Crystals   We show that it is possible to confine light in a volume of order 10^-3 cubic
wavelengths using only dielectric material. Low-index (air) cavities are
simulated in high index rod-connected diamond (RCD) photonic crystals. These
cavities show long storage times (Q-factors >10^6) even at the lowest volumes.
Fabrication of such structures could open up a new field of photon level
interactions.

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The categories of this paper are: bayes-an
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The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
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The categories of this paper are: supr-con
18
The categories of this paper are: econ
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
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The categories of this paper are: funct-an
2
The categories of this paper are: math
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The categories of this paper are: acc-phys
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol