Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tunable plasmonic devices by integrating graphene with ferroelectric
  nanocavity   Graphene plasmons may enable the novel conceptual manufacture of photonic
devices. The graphene plasmonic devices can operate at room temperature with
tunable spectral selectivity in different frequencies. The pursuit of
efficiently exciting and manipulating graphene plasmons is always the guarantee
of high-performance devices. Here, we investigate graphene plasmon waves in
periodic nanocavity with nanoscale-diameters with uniformly downward
polarization in BiFeO3 thin films. The integrating monolayer graphene with
ferroelectric nanocavity array provides a shame to dope graphene into desired
spatial patterns. Based on a theoretical model that considers periodic
ununiform conductivity across graphene sheet, the patterned ferroelectric
spacer is accounted for as an effective graphene surface plasmon polaritons
modulator. We experimentally demonstrate that the graphene plasmons can be
tuned by both scaling the size of ferroelectric nanocavity and varying the
applied gate voltage, subsequently resonant to incident lights and shows a
tunable transmission resonance in mid-infrared frequencies.

29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat