Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-magnetic nano-composites for optical and infrared negative
  refraction index media   We develop an approach to use nanostructured plasmonic materials as a
non-magnetic negative-refractive index system at optical and near-infrared
frequencies. In contrast to conventional negative refraction materials, our
design does not require periodicity and thus is highly tolerant to fabrication
defects. Moreover, since the proposed materials are intrinsically non-magnetic,
their performance is not limited to proximity of a resonance so that the
resulting structure has relatively low loss. We develop the analytical
description of the relevant electromagnetic phenomena and justify our analytic
results via numerical solutions of Maxwell equations.

1
The categories of this paper are: cs
18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin