Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fiber Bragg Gratings Embedded in 3D-Printed Scaffolds   In recent years there has been considerable interest in utilizing embedded
fiber optic based sensors for fabricating smart materials. One of the primary
motivations is to provide real-time information on the structural integrity of
the material so as to enable proactive actions that prevent catastrophic
failure. In this preliminary study we have examined the impact of embedding on
the temperature-dependent response of fiber Bragg gratings.

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The categories of this paper are: astro-ph
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The categories of this paper are: math
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
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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: stat
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
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The categories of this paper are: cond-mat
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The categories of this paper are: nucl-th
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-ph
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The categories of this paper are: q-fin
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The categories of this paper are: eess
32
The categories of this paper are: atom-ph