Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tamm plasmons in metal/nanoporous GaN distributed Bragg reflector
  cavities for active and passive optoelectronics   We investigate Tamm plasmon (TP) modes in a metal/semiconductor distributed
Bragg reflector (DBR) interface. A thin Ag (silver) layer with an optimized
thickness (~ 55 nm from simulation) was deposited on nanoporous GaN DBRs
fabricated using electrochemical etching on freestanding semipolar GaN
substrates. The reflectivity spectra of the DBRs are compared before and after
the Ag deposition and with that of a blanket Ag layer deposited on GaN. The
results indicate presence of a TP mode at ~ 455 nm on the structure after the
Ag deposition. An active medium can also be accommodated within the mode for
optoelectronics and photonics. Moreover, the simulation results predict a
sensitivity of the TP mode wavelength to the ambient (~ 4 nm shift when
changing the ambient within the pores from air with n = 1 to isopropanol n =
1.3) , suggesting an application of the nanoporous GaN based TP structure for
optical sensing.

9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
1
The categories of this paper are: cs