Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reconfigurable terahertz quarter-wave plate for helicity switching based
  on Babinet inversion of anisotropic checkerboard metasurface   Dynamic helicity switching by utilizing metasurfaces is challenging because
it requires deep modulation of polarization states. To realize such helicity
switching, this paper proposes a dynamic metasurface functioning as a
switchable quarter-wave plate, the fast axis of which can be dynamically
rotated by $90^\circ$. The device is based on the critical transition of an
anisotropic metallic checkerboard, which realizes the deep modulation and
simultaneous design of the switchable states. After verifying the functionality
of the ideally designed device in a simulation, we tune its structural
parameters to realize practical experiments in the terahertz frequency range.
By evaluating the fabricated sample with vanadium dioxide, the conductivity of
which can be controlled by temperature, its dynamic helicity switching function
is demonstrated.

20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci