Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Topological Microscopy and Near-Perfect Optical Extraordinary
  Transmission   The incumbent technology for bringing light to the nanoscale, the near-field
scanning optical microscope, has notoriously small throughput efficiencies - of
the order of 10^(-4) - 10^(-5), or less. We report on a topological
unidirectionally-guiding structure, not requiring adiabatic tapering and in
principle enabling near-perfect optical transmission through an unstructured
single (POTUS) arbitrarily-subdiffraction slit at its end - drastically
breaking the limit for transmission through subdiffraction slits of existing
plasmonic 'extraordinary optical transmission' (EOT) devices. Specifically, for
a slit width of just lambda-eff/100 (lambda-0/142), our device still manages a
transmission of 25%, implying normalized (to slit size) transmissions of the
order of 25, the highest ever reported, to our knowledge, in the field of EOT
devices, limited only by material losses. The associated, under ideal
conditions, near-perfect optical extraordinary transmission (POET) has
implications, among diverse areas in wave physics and engineering, for
high-efficiency, maximum-throughput nanoscopes and heat-assisted magnetic
recording devices.

10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
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The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn