Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hybrid Metasurfaces for Simultaneous Focusing and Filtering   This work presents the design and fabrication of simple, polymeric,
structure-based optical filters that simultaneously focus light. These filters
represent a novel design at the boundary between diffractive optics and
metasurfaces that may provide significant advantages for both digital and
hyperspectral imaging. The fabrication process for the proposed filters
resembles 3D printing, and is based on direct laser writing of a polymeric
material using two-photon lithography. In addition, printed structures could be
used to create molds for nanoimprint replication and mass production. Filters
for visible and near-infrared wavelengths were designed using finite difference
time domain (FDTD) simulations.

31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
2
The categories of this paper are: math