Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scaling of losses with size and wavelength in nanoplasmonics and
  metamaterials   We show that, for the resonant metal-dielectric structures with
sub-wavelength confinement of light in all three dimensions, the loss cannot be
reduced significantly below the loss of the metal itself unless one operates in
the far IR and THz regions of the spectrum or below. Such high losses cannot be
compensated by introducing gain due to Purcell-induced shortening of
recombination times. The only way low loss optical metamaterials can be
engineered is with as yet unknown low loss materials with negative
permittivity.

22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ