Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamically controlled plasmonic nano-antenna phased array utilizing
  vanadium dioxide   We propose and analyze theoretically an approach for realizing a tunable
optical phased-array antenna utilizing the properties of VO2 for electronic
beam steering applications in the near-IR spectral range. The device is based
on a 1D array of slot nano-antennas engraved in a thin Au film grown over VO2
layer. The tuning is obtained by inducing a temperature gradient over the
device, which changes the refractive index of the VO2, and hence modifies the
phase response of the elements comprising the array, by producing a thermal
gradient within the underlying PCM layer. Using a 10-element array, we show
that an incident beam can be steered up to with respect to the normal, by
applying a gradient of less than 10{\deg}C.

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The categories of this paper are: cond-mat
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The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: plasm-ph
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The categories of this paper are: math
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-ex
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The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom