Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Limitations on Sub-Diffraction Imaging with a Negative Refractive Index
  Slab   Recently it has been proposed that a planar slab of material, for which both
the permittivity and permeability have the values of -1, could bring not only
the propagating fields associated with a source to a focus, but could also
refocus the nonpropagating near-fields, thereby achieving a subdiffraction
image. In this work we discuss the sensitivity of the subwavelength focus to
various slab parameters, pointing out the connection to slab plasmon modes. We
also note and resolve a paradox associated with the perfect imaging of a point
source. We conclude that subwavelength resolution is achievable with available
technology, but only by implementation of a critical set of design parameters.

30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph