Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Surface plasmon polariton assisted optical switching in noble bimetallic
  nanoparticle system   Photoresponse of bimetallic Au-Ag nanoparticle embedded soda glass (Au-Ag@SG)
substrate is reported for surface plasmon assisted optical switching using 808
nm excitation. Au-Ag@SG system is made by an ion beam technique where Ag^+ is
introduced first in the soda glass matrix by ion exchange technique.
Subsequently 400 keV Au^+ is implanted in the sample for different fluences
which is followed by an ion beam annealing process using 1 MeV Si^+ at a fixed
fluence of 2E16 ions.cm^{-2}. Characteristic surface plasmon resonance (SPR)
peaks around 400 and 550 nm provided evidence for the presence of Au and Ag
nanoparticles. An optical switching in the Au-Ag@SG system with 808 nm, which
is away from the characteristic SPR peaks of Ag and Au nanoparticles, suggests
the possible role of TPA owing to the presence of interacting electric dipole
in these systems. The role of surface plasmon polariton is emphasized for the
propagation of electronic carrier belonging to the conduction electron of Au-Ag
system in understanding the observed photoresponse. Unique excitation dependent
photoresponse measurements confirm the possible role of TPA process. A
competitive interband and intraband transitions in the bimetallic system of Au
and Ag with may be primarily responsible for the observation, which are
validated qualitatively using finite difference time domain calculations where
inter-particle separation of Au and Ag play an important role. Thus, a smart
way of optical switching can be envisaged in noble bimetallic nanocluster
system where long wavelength with higher skin depth can be used for
communication purpose.

25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn