Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A review of dielectric optical metasurfaces for wavefront control   During the past few years, metasurfaces have been used to demonstrate optical
elements and systems with capabilities that surpass those of conventional
diffractive optics. Here we review some of these recent developments with a
focus on dielectric structures for shaping optical wavefronts. We discuss the
mechanisms for achieving steep phase gradients with high efficiency,
simultaneous polarization and phase control, controlling the chromatic
dispersion, and controlling the angular response. Then we review applications
in imaging, conformal optics, tunable devices, and optical systems. We conclude
with an outlook on future potentials and challenges that need to be overcome.

24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat